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.ht-step-indicator,.entry-content[class] .ht-badge,.entry-content[class] .idx,.entry-content[class] .xlink,.entry-content[class] .cat-note,.entry-content[class] .aobo-card-note,.entry-content[class] .card-desig,.entry-content[class] .k,.entry-content[class] .v,.entry-content[class] .note,.entry-content[class] .aobo-note{font-family: var(--ds-font-head) !important;font-size: 15px !important;line-height: 1.6 !important;font-weight: 400 !important}.entry-content[class] .ht-spec-label,.entry-content[class] .idx,.entry-content[class] .k{font-weight: 700 !important}.entry-content[class] .aobo-note,.entry-content[class] .note{font-family: var(--ds-font-body) !important;color: var(--ds-muted) !important}.entry-content[class] .chip{font-family: var(--ds-font-head) !important;font-size: 13px !important;font-weight: 700 !important}.entry-content[class] .kicker,.entry-content[class] .eyebrow,.entry-content[class] .aobo-eyebrow{display: inline-flex !important;align-items: center;gap: 7px;margin: 0 0 14px !important;padding: 6px 14px !important;border: 1px solid var(--ds-border) !important;border-radius: 999px !important;background: #ffffff !important;color: var(--ds-blue) !important;font-family: var(--ds-font-head) !important;font-size: 13px !important;font-weight: 700 !important;letter-spacing: 0 !important;text-transform: none !important}@media (max-width: 760px){.entry-content[class] h1{font-size: clamp(22px,6.4vw,min(34px,var(--h1-max,34px))) !important}.entry-content[class] h2{font-size: 25px !important}.entry-content[class] h3{font-size: 20px !important}.entry-content[class] h4{font-size: 17px !important}.entry-content[class] p,.entry-content[class] li{font-size: 16px !important}.entry-content[class] table th,.entry-content[class] table td{font-size: 14px !important;padding: 11px 12px !important}.entry-content[class] .aobo-hero{padding: 30px 22px}.entry-content[class] .aobo-final-cta{padding: 26px 22px}.entry-content[class] .aobo-final-cta .aobo-btn{width: 100%}}\n<\/style>\n\n<section class=\"aobo-ht-ref ts-props\">\n  <div class=\"aobo-wrap\">\n    <div class=\"ts-hero\">\n      <div class=\"ts-hero-top\">\n        <div class=\"ts-kicker\"><span><\/span>Steel Weight Reference<\/div>\n        <h1 style=\"--h1-max:50px\">Steel Bar Weight Table<\/h1>\n        <p>Theoretical weight of steel bars (kg\/m) based on specific gravity 7.85 g\/cm&sup3;. Enter bar type, size and length in the calculator, or read the unit weight straight from the tables below.<\/p>\n      <\/div>\n      <div class=\"ts-tool-area\">\n\n        <div class=\"ts-control\">\n          <div class=\"ts-ctl-title\" id=\"swt-calc-title\">Quick weight calculator<\/div>\n          <div class=\"ts-calc-fields\" role=\"group\" aria-labelledby=\"swt-calc-title\">\n            <div class=\"ts-field\">\n              <label for=\"swt-type\">Bar type<\/label>\n              <select class=\"ts-select\" id=\"swt-type\">\n                <option value=\"round\">Round bar<\/option>\n                <option value=\"square\">Square bar<\/option>\n                <option value=\"hex\">Hexagonal bar<\/option>\n                <option value=\"oct\">Octagonal bar<\/option>\n              <\/select>\n            <\/div>\n            <div class=\"ts-field\">\n              <label for=\"swt-size\">Size (mm)<\/label>\n              <input type=\"number\" id=\"swt-size\" placeholder=\"e.g. 25\" min=\"1\" step=\"0.1\" inputmode=\"decimal\">\n            <\/div>\n            <div class=\"ts-field\">\n              <label for=\"swt-len\">Length (m)<\/label>\n              <input type=\"number\" id=\"swt-len\" placeholder=\"e.g. 6\" min=\"0\" step=\"0.1\" value=\"1\" inputmode=\"decimal\">\n            <\/div>\n            <div class=\"ts-field\">\n              <button class=\"ts-btn\" type=\"button\" id=\"swt-run\">Calculate<\/button>\n            <\/div>\n          <\/div>\n          <p class=\"ts-hint\">Unit weight comes from the coefficients below. Total weight multiplies the unit weight by the length entered, and the result is a theoretical figure for estimating and quotation.<\/p>\n          <div class=\"ts-calc-out\" id=\"swt-out\" role=\"status\" aria-live=\"polite\"><\/div>\n        <\/div>\n\n        <div class=\"ts-controls\">\n          <div class=\"ts-search\">\n            <input type=\"text\" id=\"swt-filter\" placeholder=\"Filter by size (mm)\" aria-label=\"Filter the weight tables by size\">\n          <\/div>\n          <span class=\"ts-count\" id=\"swt-count\" role=\"status\">166 sizes listed<\/span>\n        <\/div>\n\n        <div class=\"ts-sec\">Round bar and square bar weight\n          <span>Unit weight for round bar and square bar from 5 to 300 mm, calculated from nominal size at a density of 7.85 g\/cm&sup3;. Density varies a little by grade, and the measured values are in the <a href=\"https:\/\/aobosteel.com\/tool-steel-density-thermal-expansion\/\">tool steel density and thermal expansion chart<\/a>.<\/span>\n        <\/div>\n        <div class=\"ts-table-wrap\">\n          <table class=\"ts-table\" id=\"swt-table-1\">\n            <thead>\n              <tr><th scope=\"col\">Size (mm)<\/th><th scope=\"col\">Round bar (kg\/m)<\/th><th scope=\"col\">Square bar (kg\/m)<\/th><\/tr>\n            <\/thead>\n            <tbody>\n              <tr data-size=\"5\"><td>5<\/td><td>0.15<\/td><td>0.20<\/td><\/tr>\n              <tr data-size=\"6\"><td>6<\/td><td>0.22<\/td><td>0.28<\/td><\/tr>\n              <tr data-size=\"7\"><td>7<\/td><td>0.30<\/td><td>0.38<\/td><\/tr>\n              <tr data-size=\"8\"><td>8<\/td><td>0.39<\/td><td>0.50<\/td><\/tr>\n              <tr data-size=\"9\"><td>9<\/td><td>0.50<\/td><td>0.64<\/td><\/tr>\n              <tr data-size=\"10\"><td>10<\/td><td>0.62<\/td><td>0.79<\/td><\/tr>\n              <tr data-size=\"11\"><td>11<\/td><td>0.75<\/td><td>0.95<\/td><\/tr>\n              <tr data-size=\"12\"><td>12<\/td><td>0.89<\/td><td>1.13<\/td><\/tr>\n              <tr data-size=\"13\"><td>13<\/td><td>1.04<\/td><td>1.33<\/td><\/tr>\n              <tr data-size=\"14\"><td>14<\/td><td>1.21<\/td><td>1.54<\/td><\/tr>\n              <tr data-size=\"15\"><td>15<\/td><td>1.39<\/td><td>1.77<\/td><\/tr>\n              <tr data-size=\"16\"><td>16<\/td><td>1.58<\/td><td>2.01<\/td><\/tr>\n              <tr data-size=\"17\"><td>17<\/td><td>1.78<\/td><td>2.27<\/td><\/tr>\n              <tr data-size=\"18\"><td>18<\/td><td>2.00<\/td><td>2.54<\/td><\/tr>\n              <tr data-size=\"19\"><td>19<\/td><td>2.23<\/td><td>2.83<\/td><\/tr>\n              <tr data-size=\"20\"><td>20<\/td><td>2.47<\/td><td>3.14<\/td><\/tr>\n              <tr data-size=\"21\"><td>21<\/td><td>2.72<\/td><td>3.46<\/td><\/tr>\n              <tr data-size=\"22\"><td>22<\/td><td>2.98<\/td><td>3.80<\/td><\/tr>\n              <tr data-size=\"23\"><td>23<\/td><td>3.26<\/td><td>4.15<\/td><\/tr>\n              <tr data-size=\"24\"><td>24<\/td><td>3.55<\/td><td>4.52<\/td><\/tr>\n              <tr data-size=\"25\"><td>25<\/td><td>3.85<\/td><td>4.91<\/td><\/tr>\n              <tr data-size=\"26\"><td>26<\/td><td>4.17<\/td><td>5.31<\/td><\/tr>\n              <tr data-size=\"27\"><td>27<\/td><td>4.49<\/td><td>5.72<\/td><\/tr>\n              <tr data-size=\"28\"><td>28<\/td><td>4.83<\/td><td>6.15<\/td><\/tr>\n              <tr data-size=\"29\"><td>29<\/td><td>5.19<\/td><td>6.60<\/td><\/tr>\n              <tr data-size=\"30\"><td>30<\/td><td>5.55<\/td><td>7.07<\/td><\/tr>\n              <tr data-size=\"31\"><td>31<\/td><td>5.92<\/td><td>7.54<\/td><\/tr>\n              <tr data-size=\"32\"><td>32<\/td><td>6.31<\/td><td>8.04<\/td><\/tr>\n              <tr data-size=\"33\"><td>33<\/td><td>6.71<\/td><td>8.55<\/td><\/tr>\n              <tr data-size=\"34\"><td>34<\/td><td>7.13<\/td><td>9.07<\/td><\/tr>\n              <tr data-size=\"35\"><td>35<\/td><td>7.55<\/td><td>9.62<\/td><\/tr>\n              <tr data-size=\"36\"><td>36<\/td><td>7.99<\/td><td>10.2<\/td><\/tr>\n              <tr data-size=\"37\"><td>37<\/td><td>8.44<\/td><td>10.8<\/td><\/tr>\n              <tr data-size=\"38\"><td>38<\/td><td>8.90<\/td><td>11.3<\/td><\/tr>\n              <tr data-size=\"39\"><td>39<\/td><td>9.38<\/td><td>11.9<\/td><\/tr>\n              <tr data-size=\"40\"><td>40<\/td><td>9.86<\/td><td>12.6<\/td><\/tr>\n              <tr data-size=\"41\"><td>41<\/td><td>10.4<\/td><td>13.2<\/td><\/tr>\n              <tr data-size=\"42\"><td>42<\/td><td>10.9<\/td><td>13.9<\/td><\/tr>\n              <tr data-size=\"43\"><td>43<\/td><td>11.4<\/td><td>14.5<\/td><\/tr>\n              <tr data-size=\"44\"><td>44<\/td><td>11.9<\/td><td>15.2<\/td><\/tr>\n              <tr data-size=\"45\"><td>45<\/td><td>12.5<\/td><td>15.9<\/td><\/tr>\n              <tr data-size=\"46\"><td>46<\/td><td>13.1<\/td><td>16.6<\/td><\/tr>\n              <tr data-size=\"47\"><td>47<\/td><td>13.6<\/td><td>17.3<\/td><\/tr>\n              <tr data-size=\"48\"><td>48<\/td><td>14.2<\/td><td>18.1<\/td><\/tr>\n              <tr data-size=\"49\"><td>49<\/td><td>14.8<\/td><td>18.9<\/td><\/tr>\n              <tr data-size=\"50\"><td>50<\/td><td>15.4<\/td><td>19.6<\/td><\/tr>\n              <tr data-size=\"51\"><td>51<\/td><td>16.0<\/td><td>20.4<\/td><\/tr>\n              <tr data-size=\"52\"><td>52<\/td><td>16.7<\/td><td>21.2<\/td><\/tr>\n              <tr data-size=\"53\"><td>53<\/td><td>17.3<\/td><td>22.1<\/td><\/tr>\n              <tr data-size=\"54\"><td>54<\/td><td>18.0<\/td><td>22.9<\/td><\/tr>\n              <tr data-size=\"55\"><td>55<\/td><td>18.7<\/td><td>23.8<\/td><\/tr>\n              <tr data-size=\"56\"><td>56<\/td><td>19.3<\/td><td>24.6<\/td><\/tr>\n              <tr data-size=\"57\"><td>57<\/td><td>20.0<\/td><td>25.5<\/td><\/tr>\n              <tr data-size=\"58\"><td>58<\/td><td>20.7<\/td><td>26.4<\/td><\/tr>\n              <tr data-size=\"59\"><td>59<\/td><td>21.5<\/td><td>27.3<\/td><\/tr>\n              <tr data-size=\"60\"><td>60<\/td><td>22.2<\/td><td>28.3<\/td><\/tr>\n              <tr data-size=\"61\"><td>61<\/td><td>22.9<\/td><td>29.2<\/td><\/tr>\n              <tr data-size=\"62\"><td>62<\/td><td>23.7<\/td><td>30.2<\/td><\/tr>\n              <tr data-size=\"63\"><td>63<\/td><td>24.5<\/td><td>31.2<\/td><\/tr>\n              <tr data-size=\"64\"><td>64<\/td><td>25.3<\/td><td>32.2<\/td><\/tr>\n              <tr data-size=\"65\"><td>65<\/td><td>26.1<\/td><td>33.2<\/td><\/tr>\n              <tr data-size=\"66\"><td>66<\/td><td>26.9<\/td><td>34.2<\/td><\/tr>\n              <tr data-size=\"67\"><td>67<\/td><td>27.7<\/td><td>35.2<\/td><\/tr>\n              <tr data-size=\"68\"><td>68<\/td><td>28.5<\/td><td>36.3<\/td><\/tr>\n              <tr data-size=\"69\"><td>69<\/td><td>29.4<\/td><td>37.4<\/td><\/tr>\n              <tr data-size=\"70\"><td>70<\/td><td>30.2<\/td><td>38.5<\/td><\/tr>\n              <tr data-size=\"71\"><td>71<\/td><td>31.1<\/td><td>39.6<\/td><\/tr>\n              <tr data-size=\"72\"><td>72<\/td><td>32.0<\/td><td>40.7<\/td><\/tr>\n              <tr data-size=\"73\"><td>73<\/td><td>32.8<\/td><td>41.8<\/td><\/tr>\n              <tr data-size=\"74\"><td>74<\/td><td>33.8<\/td><td>43.0<\/td><\/tr>\n              <tr data-size=\"75\"><td>75<\/td><td>34.7<\/td><td>44.2<\/td><\/tr>\n              <tr data-size=\"76\"><td>76<\/td><td>35.6<\/td><td>45.3<\/td><\/tr>\n              <tr data-size=\"77\"><td>77<\/td><td>36.6<\/td><td>46.5<\/td><\/tr>\n              <tr data-size=\"78\"><td>78<\/td><td>37.5<\/td><td>47.8<\/td><\/tr>\n              <tr data-size=\"79\"><td>79<\/td><td>38.5<\/td><td>49.0<\/td><\/tr>\n              <tr data-size=\"80\"><td>80<\/td><td>39.5<\/td><td>50.2<\/td><\/tr>\n              <tr data-size=\"81\"><td>81<\/td><td>40.5<\/td><td>51.5<\/td><\/tr>\n              <tr data-size=\"82\"><td>82<\/td><td>41.5<\/td><td>52.8<\/td><\/tr>\n              <tr data-size=\"83\"><td>83<\/td><td>42.5<\/td><td>54.1<\/td><\/tr>\n              <tr data-size=\"84\"><td>84<\/td><td>43.5<\/td><td>55.4<\/td><\/tr>\n              <tr data-size=\"85\"><td>85<\/td><td>44.5<\/td><td>56.7<\/td><\/tr>\n              <tr data-size=\"86\"><td>86<\/td><td>45.6<\/td><td>58.1<\/td><\/tr>\n              <tr data-size=\"87\"><td>87<\/td><td>46.7<\/td><td>59.4<\/td><\/tr>\n              <tr data-size=\"88\"><td>88<\/td><td>47.7<\/td><td>60.8<\/td><\/tr>\n              <tr data-size=\"89\"><td>89<\/td><td>48.8<\/td><td>62.2<\/td><\/tr>\n              <tr data-size=\"90\"><td>90<\/td><td>49.9<\/td><td>63.6<\/td><\/tr>\n              <tr data-size=\"91\"><td>91<\/td><td>51.1<\/td><td>65.0<\/td><\/tr>\n              <tr data-size=\"92\"><td>92<\/td><td>52.2<\/td><td>66.4<\/td><\/tr>\n              <tr data-size=\"93\"><td>93<\/td><td>53.3<\/td><td>67.9<\/td><\/tr>\n              <tr data-size=\"94\"><td>94<\/td><td>54.5<\/td><td>69.4<\/td><\/tr>\n              <tr data-size=\"95\"><td>95<\/td><td>55.6<\/td><td>70.9<\/td><\/tr>\n              <tr data-size=\"96\"><td>96<\/td><td>56.8<\/td><td>72.4<\/td><\/tr>\n              <tr data-size=\"97\"><td>97<\/td><td>58.0<\/td><td>73.9<\/td><\/tr>\n              <tr data-size=\"98\"><td>98<\/td><td>59.2<\/td><td>75.4<\/td><\/tr>\n              <tr data-size=\"99\"><td>99<\/td><td>60.4<\/td><td>76.9<\/td><\/tr>\n              <tr data-size=\"100\"><td>100<\/td><td>61.7<\/td><td>78.5<\/td><\/tr>\n              <tr data-size=\"105\"><td>105<\/td><td>68.9<\/td><td>86.6<\/td><\/tr>\n              <tr data-size=\"110\"><td>110<\/td><td>74.6<\/td><td>95.0<\/td><\/tr>\n              <tr data-size=\"115\"><td>115<\/td><td>81.5<\/td><td>104<\/td><\/tr>\n              <tr data-size=\"120\"><td>120<\/td><td>88.8<\/td><td>113<\/td><\/tr>\n              <tr data-size=\"125\"><td>125<\/td><td>96.3<\/td><td>123<\/td><\/tr>\n              <tr data-size=\"130\"><td>130<\/td><td>104<\/td><td>133<\/td><\/tr>\n              <tr data-size=\"135\"><td>135<\/td><td>112<\/td><td>143<\/td><\/tr>\n              <tr data-size=\"140\"><td>140<\/td><td>121<\/td><td>154<\/td><\/tr>\n              <tr data-size=\"145\"><td>145<\/td><td>130<\/td><td>165<\/td><\/tr>\n              <tr data-size=\"150\"><td>150<\/td><td>139<\/td><td>177<\/td><\/tr>\n              <tr data-size=\"155\"><td>155<\/td><td>148<\/td><td>189<\/td><\/tr>\n              <tr data-size=\"160\"><td>160<\/td><td>158<\/td><td>201<\/td><\/tr>\n              <tr data-size=\"165\"><td>165<\/td><td>168<\/td><td>214<\/td><\/tr>\n              <tr data-size=\"170\"><td>170<\/td><td>178<\/td><td>227<\/td><\/tr>\n              <tr data-size=\"175\"><td>175<\/td><td>189<\/td><td>240<\/td><\/tr>\n              <tr data-size=\"180\"><td>180<\/td><td>200<\/td><td>254<\/td><\/tr>\n              <tr data-size=\"185\"><td>185<\/td><td>211<\/td><td>269<\/td><\/tr>\n              <tr data-size=\"190\"><td>190<\/td><td>223<\/td><td>283<\/td><\/tr>\n              <tr data-size=\"195\"><td>195<\/td><td>234<\/td><td>299<\/td><\/tr>\n              <tr data-size=\"200\"><td>200<\/td><td>247<\/td><td>314<\/td><\/tr>\n              <tr data-size=\"210\"><td>210<\/td><td>272<\/td><td>346<\/td><\/tr>\n              <tr data-size=\"220\"><td>220<\/td><td>298<\/td><td>380<\/td><\/tr>\n              <tr data-size=\"230\"><td>230<\/td><td>326<\/td><td>415<\/td><\/tr>\n              <tr data-size=\"240\"><td>240<\/td><td>355<\/td><td>452<\/td><\/tr>\n              <tr data-size=\"250\"><td>250<\/td><td>386<\/td><td>491<\/td><\/tr>\n              <tr data-size=\"260\"><td>260<\/td><td>417<\/td><td>531<\/td><\/tr>\n              <tr data-size=\"270\"><td>270<\/td><td>449<\/td><td>572<\/td><\/tr>\n              <tr data-size=\"280\"><td>280<\/td><td>483<\/td><td>615<\/td><\/tr>\n              <tr data-size=\"290\"><td>290<\/td><td>518<\/td><td>660<\/td><\/tr>\n              <tr data-size=\"300\"><td>300<\/td><td>555<\/td><td>707<\/td><\/tr>\n            <\/tbody>\n          <\/table>\n        <\/div>\n\n        <div class=\"ts-sec\">Hexagonal bar and octagonal bar weight\n          <span>Hexagonal and octagonal bar from 5 to 56 mm. Size is measured across the flats for both profiles.<\/span>\n        <\/div>\n        <div class=\"ts-table-wrap\">\n          <table class=\"ts-table\" id=\"swt-table-2\">\n            <thead>\n              <tr><th scope=\"col\">Size (mm)<\/th><th scope=\"col\">Hexagonal bar (kg\/m)<\/th><th scope=\"col\">Octagonal bar (kg\/m)<\/th><\/tr>\n            <\/thead>\n            <tbody>\n              <tr data-size=\"5\"><td>5<\/td><td>0.17<\/td><td>0.16<\/td><\/tr>\n              <tr data-size=\"6\"><td>6<\/td><td>0.25<\/td><td>0.23<\/td><\/tr>\n              <tr data-size=\"7\"><td>7<\/td><td>0.33<\/td><td>0.32<\/td><\/tr>\n              <tr data-size=\"8\"><td>8<\/td><td>0.44<\/td><td>0.42<\/td><\/tr>\n              <tr data-size=\"9\"><td>9<\/td><td>0.55<\/td><td>0.53<\/td><\/tr>\n              <tr data-size=\"10\"><td>10<\/td><td>0.68<\/td><td>0.65<\/td><\/tr>\n              <tr data-size=\"11\"><td>11<\/td><td>0.82<\/td><td>0.79<\/td><\/tr>\n              <tr data-size=\"12\"><td>12<\/td><td>0.98<\/td><td>0.94<\/td><\/tr>\n              <tr data-size=\"13\"><td>13<\/td><td>1.15<\/td><td>1.10<\/td><\/tr>\n              <tr data-size=\"14\"><td>14<\/td><td>1.33<\/td><td>1.27<\/td><\/tr>\n              <tr data-size=\"15\"><td>15<\/td><td>1.53<\/td><td>1.46<\/td><\/tr>\n              <tr data-size=\"16\"><td>16<\/td><td>1.74<\/td><td>1.66<\/td><\/tr>\n              <tr data-size=\"17\"><td>17<\/td><td>1.97<\/td><td>1.88<\/td><\/tr>\n              <tr data-size=\"18\"><td>18<\/td><td>2.20<\/td><td>2.11<\/td><\/tr>\n              <tr data-size=\"19\"><td>19<\/td><td>2.45<\/td><td>2.35<\/td><\/tr>\n              <tr data-size=\"20\"><td>20<\/td><td>2.72<\/td><td>2.60<\/td><\/tr>\n              <tr data-size=\"21\"><td>21<\/td><td>3.00<\/td><td>2.87<\/td><\/tr>\n              <tr data-size=\"22\"><td>22<\/td><td>3.29<\/td><td>3.15<\/td><\/tr>\n              <tr data-size=\"23\"><td>23<\/td><td>3.60<\/td><td>3.44<\/td><\/tr>\n              <tr data-size=\"24\"><td>24<\/td><td>3.92<\/td><td>3.74<\/td><\/tr>\n              <tr data-size=\"25\"><td>25<\/td><td>4.25<\/td><td>4.06<\/td><\/tr>\n              <tr data-size=\"26\"><td>26<\/td><td>4.60<\/td><td>4.40<\/td><\/tr>\n              <tr data-size=\"27\"><td>27<\/td><td>4.96<\/td><td>4.74<\/td><\/tr>\n              <tr data-size=\"28\"><td>28<\/td><td>5.33<\/td><td>5.09<\/td><\/tr>\n              <tr data-size=\"29\"><td>29<\/td><td>5.72<\/td><td>5.47<\/td><\/tr>\n              <tr data-size=\"30\"><td>30<\/td><td>6.12<\/td><td>5.85<\/td><\/tr>\n              <tr data-size=\"31\"><td>31<\/td><td>6.53<\/td><td>6.25<\/td><\/tr>\n              <tr data-size=\"32\"><td>32<\/td><td>6.96<\/td><td>6.66<\/td><\/tr>\n              <tr data-size=\"33\"><td>33<\/td><td>7.41<\/td><td>7.08<\/td><\/tr>\n              <tr data-size=\"34\"><td>34<\/td><td>7.86<\/td><td>7.52<\/td><\/tr>\n              <tr data-size=\"35\"><td>35<\/td><td>8.33<\/td><td>7.97<\/td><\/tr>\n              <tr data-size=\"37\"><td>37<\/td><td>9.31<\/td><td>8.90<\/td><\/tr>\n              <tr data-size=\"39\"><td>39<\/td><td>10.3<\/td><td>9.89<\/td><\/tr>\n              <tr data-size=\"41\"><td>41<\/td><td>11.4<\/td><td>10.9<\/td><\/tr>\n              <tr data-size=\"43\"><td>43<\/td><td>12.6<\/td><td>12.0<\/td><\/tr>\n              <tr data-size=\"45\"><td>45<\/td><td>13.8<\/td><td>13.2<\/td><\/tr>\n              <tr data-size=\"47\"><td>47<\/td><td>15.0<\/td><td>14.4<\/td><\/tr>\n              <tr data-size=\"50\"><td>50<\/td><td>17.0<\/td><td>16.3<\/td><\/tr>\n              <tr data-size=\"53\"><td>53<\/td><td>19.1<\/td><td>18.3<\/td><\/tr>\n              <tr data-size=\"56\"><td>56<\/td><td>21.3<\/td><td>20.4<\/td><\/tr>\n            <\/tbody>\n          <\/table>\n        <\/div>\n\n        <div class=\"ts-grid\">\n          <div class=\"ts-card\">\n            <h2>Calculation basis<\/h2>\n            <p>Specific gravity 7.85 g\/cm&sup3;, standard for carbon and alloy steel. Round bar 0.00617 &times; d&sup2;, square bar 0.00785 &times; d&sup2;.<\/p>\n          <\/div>\n          <div class=\"ts-card\">\n            <h2>Size definition<\/h2>\n            <p>Round and square bar, size is the diameter or the side length. Hexagonal and octagonal bar, size is the distance between opposite sides.<\/p>\n          <\/div>\n          <div class=\"ts-card\">\n            <h2>Weight adjustment by grade<\/h2>\n            <p>Molybdenum HSS (M2, M35, M42) approx. +3%, tungsten HSS 18-4-1 type (T1) approx. +10%.<\/p>\n          <\/div>\n        <\/div>\n\n        <div class=\"ts-rel\">\n          <h3>Related reference pages<\/h3>\n          <p><a href=\"https:\/\/aobosteel.com\/tool-steel-hardness-conversion-calculator\/\">Tool steel hardness conversion calculator<\/a> &middot; <a href=\"https:\/\/aobosteel.com\/tool-steel-properties-chart\/\">Tool steel properties chart<\/a> &middot; <a href=\"https:\/\/aobosteel.com\/tool-steel-material-finder\/\">Tool steel material finder<\/a> &middot; <a href=\"https:\/\/aobosteel.com\/how-to-select-tool-steels\/\">How to select tool steels<\/a> &middot; <a href=\"https:\/\/aobosteel.com\/tool-steels\/\">Tool steel supply and stock sizes<\/a><\/p>\n        <\/div>\n\n        <p class=\"ts-source\">Theoretical unit weights calculated from nominal dimensions at a density of 7.85 g\/cm&sup3;. Actual weight varies with rolling tolerance, machining allowance and cutting loss, so use the figures for estimating and quotation.<\/p>\n      <\/div>\n    <\/div>\n  <\/div>\n<\/section>\n\n<script>\n(function () {\n  var COEFF = { round: 0.00617, square: 0.00785, hex: 0.00680, oct: 0.00650 };\n  var TYPE_LABEL = { round: 'Round bar', square: 'Square bar', hex: 'Hexagonal bar', oct: 'Octagonal bar' };\n  var out = document.getElementById('swt-out');\n  var run = document.getElementById('swt-run');\n  var sizeInput = document.getElementById('swt-size');\n  var lenInput = document.getElementById('swt-len');\n  var typeInput = document.getElementById('swt-type');\n\n  function calculate() {\n    var type = typeInput.value;\n    var size = parseFloat(sizeInput.value);\n    var len = parseFloat(lenInput.value) || 1;\n    if (!size || size <= 0) {\n      out.innerHTML = '<span class=\"ts-res-err\">Enter a size in millimetres, greater than 0.<\/span>';\n      out.classList.add('show');\n      return;\n    }\n    var wpm = COEFF[type] * size * size;\n    var total = wpm * len;\n    out.innerHTML = '<span class=\"ts-res-main\">' + total.toFixed(1) + ' kg total<\/span>' +\n      '<span class=\"ts-res-meta\">' + TYPE_LABEL[type] + ', ' + size + ' mm, ' + len + ' m<\/span>' +\n      '<span class=\"ts-res-meta\">' + wpm.toFixed(2) + ' kg\/m unit weight<\/span>';\n    out.classList.add('show');\n  }\n\n  run.addEventListener('click', calculate);\n  [sizeInput, lenInput].forEach(function (el) {\n    el.addEventListener('keydown', function (e) {\n      if (e.key === 'Enter') calculate();\n    });\n  });\n\n  var filter = document.getElementById('swt-filter');\n  var count = document.getElementById('swt-count');\n  var tables = [document.getElementById('swt-table-1'), document.getElementById('swt-table-2')];\n  var rows = [];\n  tables.forEach(function (table) {\n    table.querySelectorAll('tbody tr').forEach(function (tr) {\n      rows.push({ row: tr, size: tr.getAttribute('data-size') || '' });\n    });\n  });\n  var total = rows.length;\n\n  function applyFilter() {\n    var q = filter.value.trim().toLowerCase();\n    var visible = 0;\n    rows.forEach(function (item) {\n      var hit = q === '' || item.size.indexOf(q) === 0;\n      item.row.classList.toggle('ts-hide', !hit);\n      if (hit) { visible++; }\n    });\n    count.textContent = q === '' ? total + ' sizes listed' : 'Showing ' + visible + ' of ' + total + ' sizes';\n  }\n\n  filter.addEventListener('input', applyFilter);\n  applyFilter();\n})();\n<\/script>\n","protected":false},"excerpt":{"rendered":"<p>Steel Weight Reference Steel Bar Weight Table Theoretical weight of steel bars (kg\/m) based on specific gravity 7.85 g\/cm&sup3;. Enter bar type, size and length in the calculator, or read the unit weight straight from the tables below. Quick weight calculator Bar type Round barSquare barHexagonal barOctagonal bar Size (mm) Length (m) Calculate Unit weight [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"normal-width-container","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"class_list":["post-15425","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.7 (Yoast SEO v28.7) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Steel Round Bar Weight Calculator and Unit Weight Tables<\/title>\n<meta name=\"description\" content=\"Unit weight of round bar and square bar from 5 to 300 mm at 7.85 g\/cm3. 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