262:
Despite this, in practice torque units are commonly called the foot-pound (denoted as either lb-ft or ft-lb) or the inch-pound (denoted as in-lb). Practitioners depend on context and the hyphenated abbreviations to know that these refer to neither energy nor moment of mass (as the symbol ft-lb
341:
1070:
478:
1591:
1052:
330:
1045:
1560:
460:
1038:
402:
426:
369:
1014:
34:
1061:
453:
39:
1019:
117:
1555:
1009:
43:
1581:
256:
172:
1586:
446:
301:
1448:
885:
1084:
497:
386:
274:) is the torque of one pound of force applied to one inch of distance from the pivot, and is equal to
1524:
1474:
901:
1540:
1499:
1002:
926:
248:
20:
1550:
1545:
997:
987:
289:
547:
502:
422:
365:
160:
359:
201:
1443:
1343:
941:
407:
In most US industrial settings, the torque ranges are given in ft-lb rather than lbf-ft.
1519:
1479:
1348:
971:
946:
906:
839:
798:
748:
469:
252:
1575:
1422:
1384:
1318:
992:
951:
916:
854:
768:
572:
567:
285:
1494:
1469:
1379:
1364:
1298:
1134:
1119:
931:
849:
834:
829:
814:
773:
738:
712:
603:
557:
542:
240:
180:
106:
361:
Today's
Technician: Automotive Engine Performance Classroom Manual and Shop Manual
1509:
1489:
1369:
1303:
1277:
1236:
1172:
1162:
1157:
1152:
1104:
1099:
1094:
1030:
966:
921:
844:
819:
753:
743:
692:
618:
608:
598:
593:
588:
522:
517:
512:
210:
156:
152:
1504:
1484:
1453:
1427:
1272:
1241:
1231:
1210:
1205:
1200:
1195:
1114:
936:
911:
880:
697:
687:
661:
656:
646:
641:
537:
331:"The International System of Units (SI) – Conversion Factors for General Use"
1399:
1323:
1282:
859:
193:
1394:
1226:
864:
778:
733:
682:
388:
Dynamics of rotation : an elementary introduction to rigid dynamics
1417:
1124:
961:
552:
163:
about an axis that applies one pound-force at a radius of one foot.
159:
from a pivot point. Conversely one foot pound-force (ft · lbf) is the
1313:
1256:
763:
717:
651:
532:
148:
53:
1374:
1251:
824:
707:
666:
438:
329:
Butcher, Kenneth; Crown, Linda; Gentry, Elizabeth J. (May 2006),
1308:
1246:
1167:
1129:
1109:
1089:
758:
702:
613:
562:
527:
507:
492:
175:(SI) units is given by multiplying the following exact factors:
1034:
442:
247:
The name "pound-foot", intended to minimize confusion with the
1389:
284: lbf⋅ft (0.1129848 N⋅m). It is commonly used on
419:
255:, was apparently first proposed by British physicist
1592:
Customary units of measurement in the United States
1533:
1462:
1436:
1410:
1357:
1336:
1291:
1265:
1219:
1188:
1181:
1145:
1077:
980:
894:
873:
807:
791:
726:
675:
634:
627:
581:
485:
391:(3rd ed.). Longmans, Green, and Co. p. 9.
113:
89:
67:
59:
49:
33:
28:
364:(5th ed.). Cengage Learning. pp. 50–51.
1046:
454:
8:
1185:
1053:
1039:
1031:
631:
461:
447:
439:
155:acting at a perpendicular distance of one
25:
217:This gives the exact conversion factor:
314:
292:for setting specific fastener tension.
324:
322:
320:
318:
7:
1071:Comparison with imperial unit system
403:"Dial Torque Wrenches from Grainger"
479:Comparison with US customary system
14:
1561:Foot–pound–second system of units
417:Erjavec, Jack (22 January 2010).
385:Arthur Mason Worthington (1900).
263:rather than lbf-ft would imply).
71:
421:. Cengage Learning. p. 38.
347:from the original on 2023-05-30
1015:Foot–pound–second system (FPS)
1:
1062:United States customary units
338:NIST Special Publication 1038
40:British Gravitational System
1020:Twenty-foot equivalent unit
125:≈ 0.1382550 kgf⋅m
118:Gravitational metric system
1608:
1454:Kilopounds per square inch
18:
1556:English Engineering Units
1068:
1010:English Engineering units
476:
85:
44:English Engineering Units
1463:Other units and measures
895:Other units and measures
257:Arthur Mason Worthington
19:Not to be confused with
358:Pickerill, Ken (2009).
302:Kilogram metre (torque)
1449:Pounds per square inch
886:Pounds per square inch
1085:Thousandth of an inch
498:Thousandth of an inch
173:Système International
1525:Ton of refrigeration
1475:British thermal unit
902:British thermal unit
139:), abbreviated from
1541:American wire gauge
1515:Pound-foot (torque)
1500:Foot-pound (energy)
290:torque screwdrivers
80:... is equal to ...
63:lbf⋅ft, lb-ft
21:Foot-pound (energy)
1551:Body jewelry sizes
1546:Avoirdupois system
988:Avoirdupois system
123:
115:
97:
91:
1569:
1568:
1332:
1331:
1028:
1027:
787:
786:
428:978-1-4354-3933-7
405:. Grainger. 2020.
221:One pound-foot =
151:representing one
129:
128:
68:Conversions
1599:
1186:
1055:
1048:
1041:
1032:
632:
463:
456:
449:
440:
433:
432:
414:
408:
406:
399:
393:
392:
382:
376:
375:
355:
349:
348:
346:
335:
326:
283:
282:
278:
239:
238:
235:
232:
229:
226:
202:Standard gravity
196:
191:
188:
147:), is a unit of
141:pound-force foot
124:
116:
109:
104:
98:
92:
26:
1607:
1606:
1602:
1601:
1600:
1598:
1597:
1596:
1582:Units of torque
1572:
1571:
1570:
1565:
1534:Related systems
1529:
1458:
1444:Inch of mercury
1432:
1406:
1353:
1344:Feet per second
1328:
1287:
1261:
1215:
1177:
1141:
1073:
1064:
1059:
1029:
1024:
981:Related systems
976:
942:Horsepower-hour
890:
869:
803:
783:
722:
671:
623:
577:
481:
472:
467:
437:
436:
429:
416:
415:
411:
401:
400:
396:
384:
383:
379:
372:
357:
356:
352:
344:
333:
328:
327:
316:
311:
298:
286:torque wrenches
280:
276:
275:
236:
233:
230:
227:
224:
222:
189:
186:
184:
169:
122:
114:
102:
100:
96:
90:
24:
17:
12:
11:
5:
1605:
1603:
1595:
1594:
1589:
1587:Imperial units
1584:
1574:
1573:
1567:
1566:
1564:
1563:
1558:
1553:
1548:
1543:
1537:
1535:
1531:
1530:
1528:
1527:
1522:
1520:Spinning count
1517:
1512:
1507:
1502:
1497:
1492:
1487:
1482:
1480:Degree (angle)
1477:
1472:
1466:
1464:
1460:
1459:
1457:
1456:
1451:
1446:
1440:
1438:
1434:
1433:
1431:
1430:
1425:
1420:
1414:
1412:
1408:
1407:
1405:
1404:
1403:
1402:
1397:
1387:
1382:
1377:
1372:
1367:
1361:
1359:
1355:
1354:
1352:
1351:
1349:Miles per hour
1346:
1340:
1338:
1334:
1333:
1330:
1329:
1327:
1326:
1321:
1316:
1311:
1306:
1301:
1295:
1293:
1289:
1288:
1286:
1285:
1280:
1275:
1269:
1267:
1263:
1262:
1260:
1259:
1254:
1249:
1244:
1239:
1234:
1229:
1223:
1221:
1217:
1216:
1214:
1213:
1208:
1203:
1198:
1192:
1190:
1183:
1179:
1178:
1176:
1175:
1170:
1165:
1160:
1155:
1149:
1147:
1143:
1142:
1140:
1139:
1138:
1137:
1127:
1122:
1117:
1112:
1107:
1102:
1097:
1092:
1087:
1081:
1079:
1075:
1074:
1069:
1066:
1065:
1060:
1058:
1057:
1050:
1043:
1035:
1026:
1025:
1023:
1022:
1017:
1012:
1007:
1006:
1005:
1000:
990:
984:
982:
978:
977:
975:
974:
972:Spinning count
969:
964:
959:
954:
949:
944:
939:
934:
929:
924:
919:
914:
909:
904:
898:
896:
892:
891:
889:
888:
883:
877:
875:
871:
870:
868:
867:
862:
857:
852:
847:
842:
837:
832:
827:
822:
817:
811:
809:
805:
804:
802:
801:
799:Miles per hour
795:
793:
789:
788:
785:
784:
782:
781:
776:
771:
766:
761:
756:
751:
746:
741:
736:
730:
728:
724:
723:
721:
720:
715:
710:
705:
700:
695:
690:
685:
679:
677:
673:
672:
670:
669:
664:
659:
654:
649:
644:
638:
636:
629:
625:
624:
622:
621:
616:
611:
606:
601:
596:
591:
585:
583:
579:
578:
576:
575:
570:
565:
560:
555:
550:
548:Gunter's chain
545:
540:
535:
530:
525:
520:
515:
510:
505:
500:
495:
489:
487:
483:
482:
477:
474:
473:
470:Imperial units
468:
466:
465:
458:
451:
443:
435:
434:
427:
409:
394:
377:
371:978-1111782382
370:
350:
313:
312:
310:
307:
306:
305:
297:
294:
266:Similarly, an
245:
244:
215:
214:
206:
205:
198:
197:
168:
165:
153:pound of force
127:
126:
120:
111:
110:
94:
87:
86:
83:
82:
77:
73:1 lbf⋅ft
70:
69:
65:
64:
61:
57:
56:
51:
47:
46:
37:
31:
30:
16:Unit of torque
15:
13:
10:
9:
6:
4:
3:
2:
1604:
1593:
1590:
1588:
1585:
1583:
1580:
1579:
1577:
1562:
1559:
1557:
1554:
1552:
1549:
1547:
1544:
1542:
1539:
1538:
1536:
1532:
1526:
1523:
1521:
1518:
1516:
1513:
1511:
1508:
1506:
1503:
1501:
1498:
1496:
1493:
1491:
1488:
1486:
1483:
1481:
1478:
1476:
1473:
1471:
1468:
1467:
1465:
1461:
1455:
1452:
1450:
1447:
1445:
1442:
1441:
1439:
1435:
1429:
1426:
1424:
1421:
1419:
1416:
1415:
1413:
1409:
1401:
1398:
1396:
1393:
1392:
1391:
1388:
1386:
1385:Hundredweight
1383:
1381:
1378:
1376:
1373:
1371:
1368:
1366:
1363:
1362:
1360:
1356:
1350:
1347:
1345:
1342:
1341:
1339:
1335:
1325:
1322:
1320:
1317:
1315:
1312:
1310:
1307:
1305:
1302:
1300:
1297:
1296:
1294:
1290:
1284:
1281:
1279:
1276:
1274:
1271:
1270:
1268:
1264:
1258:
1255:
1253:
1250:
1248:
1245:
1243:
1240:
1238:
1235:
1233:
1230:
1228:
1225:
1224:
1222:
1218:
1212:
1209:
1207:
1204:
1202:
1199:
1197:
1194:
1193:
1191:
1187:
1184:
1180:
1174:
1171:
1169:
1166:
1164:
1161:
1159:
1156:
1154:
1151:
1150:
1148:
1144:
1136:
1133:
1132:
1131:
1128:
1126:
1123:
1121:
1118:
1116:
1113:
1111:
1108:
1106:
1103:
1101:
1098:
1096:
1093:
1091:
1088:
1086:
1083:
1082:
1080:
1076:
1072:
1067:
1063:
1056:
1051:
1049:
1044:
1042:
1037:
1036:
1033:
1021:
1018:
1016:
1013:
1011:
1008:
1004:
1001:
999:
996:
995:
994:
993:English units
991:
989:
986:
985:
983:
979:
973:
970:
968:
965:
963:
960:
958:
955:
953:
952:Pound (force)
950:
948:
945:
943:
940:
938:
935:
933:
930:
928:
925:
923:
920:
918:
915:
913:
910:
908:
905:
903:
900:
899:
897:
893:
887:
884:
882:
879:
878:
876:
872:
866:
863:
861:
858:
856:
855:Hundredweight
853:
851:
848:
846:
843:
841:
838:
836:
833:
831:
828:
826:
823:
821:
818:
816:
813:
812:
810:
806:
800:
797:
796:
794:
790:
780:
777:
775:
772:
770:
767:
765:
762:
760:
757:
755:
752:
750:
749:Fluid Scruple
747:
745:
742:
740:
737:
735:
732:
731:
729:
725:
719:
716:
714:
711:
709:
706:
704:
701:
699:
696:
694:
691:
689:
686:
684:
681:
680:
678:
674:
668:
665:
663:
660:
658:
655:
653:
650:
648:
645:
643:
640:
639:
637:
633:
630:
626:
620:
617:
615:
612:
610:
607:
605:
602:
600:
597:
595:
592:
590:
587:
586:
584:
580:
574:
571:
569:
568:Nautical mile
566:
564:
561:
559:
556:
554:
551:
549:
546:
544:
541:
539:
536:
534:
531:
529:
526:
524:
521:
519:
516:
514:
511:
509:
506:
504:
501:
499:
496:
494:
491:
490:
488:
484:
480:
475:
471:
464:
459:
457:
452:
450:
445:
444:
441:
430:
424:
420:
413:
410:
404:
398:
395:
390:
389:
381:
378:
373:
367:
363:
362:
354:
351:
343:
339:
332:
325:
323:
321:
319:
315:
308:
303:
300:
299:
295:
293:
291:
287:
273:
269:
264:
260:
258:
254:
251:as a unit of
250:
242:
241:newton metres
220:
219:
218:
212:
208:
207:
204:= 9.80665 m/s
203:
200:
199:
195:
182:
178:
177:
176:
174:
171:The value in
166:
164:
162:
158:
154:
150:
146:
142:
138:
134:
121:
119:
112:
108:
95:
88:
84:
81:
78:
76:
72:
66:
62:
58:
55:
52:
48:
45:
41:
38:
36:
32:
27:
22:
1514:
1495:Foot-lambert
1470:Bolt (cloth)
956:
932:Foot-poundal
850:Long hundred
830:Pound (mass)
754:Fluid Drachm
713:Trade gallon
418:
412:
397:
387:
380:
360:
353:
337:
271:
267:
265:
261:
246:
216:
181:pound (mass)
170:
144:
140:
136:
132:
130:
79:
74:
50:Unit of
1490:Foot-candle
1423:Pound-force
1237:Fluid ounce
1173:Square mile
1163:Square yard
1158:Square foot
1153:Square inch
922:Foot-candle
693:Fluid ounce
619:Square mile
599:Square yard
594:Square foot
589:Square inch
35:Unit system
1576:Categories
1505:Horsepower
1485:Fahrenheit
1273:Board foot
1232:Tablespoon
1211:Cubic mile
1206:Cubic yard
1201:Cubic foot
1196:Cubic inch
998:Winchester
957:Pound-foot
937:Horsepower
927:Foot-pound
912:Fahrenheit
688:Tablespoon
662:Cubic mile
657:Cubic yard
647:Cubic foot
642:Cubic inch
503:Barleycorn
309:References
272:pound-inch
268:inch-pound
249:foot-pound
213:= 0.3048 m
133:pound-foot
29:pound-foot
1324:Acre-foot
1283:Face cord
1003:Exchequer
860:Ship load
194:kilograms
1437:Pressure
1227:Teaspoon
874:Pressure
779:Hogshead
734:Chaldron
683:Teaspoon
342:archived
296:See also
145:lbf · ft
93:SI units
1418:Poundal
1220:Cooking
1189:Derived
1135:statute
1125:Furlong
962:Poundal
947:Kenning
917:Rankine
840:Quarter
676:Cooking
635:Derived
553:Furlong
304:(kgf⋅m)
279:⁄
99:≈
1319:Barrel
1314:Bushel
1257:Gallon
1182:Volume
1078:Length
907:Degree
820:Drachm
769:Barrel
764:Bushel
718:Gallon
652:Hoppus
628:Volume
573:League
533:Fathom
486:Length
425:
368:
192:
161:moment
149:torque
105:
75:in ...
60:Symbol
54:Torque
1411:Force
1400:Short
1380:Pound
1375:Ounce
1365:Grain
1337:Speed
1299:Minim
1292:Other
1252:Quart
1120:Chain
835:Stone
825:Ounce
815:Grain
792:Speed
774:Stuck
739:Minim
727:Other
708:Quart
667:Tmcft
604:Perch
558:Cable
543:Chain
345:(PDF)
334:(PDF)
223:1.355
185:0.453
137:lb⋅ft
101:1.355
1510:Perm
1395:Long
1370:Dram
1358:Mass
1309:Peck
1304:Gill
1278:Cord
1266:Wood
1247:Pint
1168:Acre
1146:Area
1130:Mile
1110:Yard
1105:Foot
1100:Link
1095:Hand
1090:Inch
967:Span
845:Slug
808:Mass
759:Peck
744:Gill
703:Pint
614:Acre
609:Rood
582:Area
563:Mile
528:Yard
523:Foot
518:Link
513:Hand
508:Inch
493:Twip
423:ISBN
366:ISBN
288:and
270:(or
253:work
211:foot
209:One
179:One
167:Unit
157:foot
1428:Kip
1390:Ton
1242:Cup
1115:Rod
881:Ksi
865:Ton
698:Cup
538:Rod
259:.
234:400
231:331
228:948
225:817
187:592
107:N⋅m
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336:,
317:^
281:12
190:37
183:=
131:A
42:,
1054:e
1047:t
1040:v
462:e
455:t
448:v
431:.
374:.
277:1
243:.
237:4
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