| pound-force | 1 lbf | 2 lbf | 3 lbf | 4 lbf | 5 lbf | 6 lbf | 7 lbf | 8 lbf | 9 lbf | 10 lbf | 11 lbf | 12 lbf | 13 lbf | 14 lbf | 15 lbf | 16 lbf | 17 lbf | 18 lbf | 19 lbf | 20 lbf | 21 lbf | 22 lbf | 23 lbf | 24 lbf | 25 lbf | 26 lbf | 27 lbf | 28 lbf | 29 lbf | 30 lbf | 31 lbf | 32 lbf | 33 lbf | 34 lbf | 35 lbf | 36 lbf | 37 lbf | 38 lbf | 39 lbf | 40 lbf | 41 lbf | 42 lbf | 43 lbf | 44 lbf | 45 lbf | 46 lbf | 47 lbf | 48 lbf | 49 lbf | 50 lbf | 51 lbf | 52 lbf | 53 lbf | 54 lbf | 55 lbf | 56 lbf | 57 lbf | 58 lbf | 59 lbf | 60 lbf | 61 lbf | 62 lbf | 63 lbf | 64 lbf | 65 lbf | 66 lbf | 67 lbf | 68 lbf | 69 lbf | 70 lbf | 71 lbf | 72 lbf | 73 lbf | 74 lbf | 75 lbf | 76 lbf | 77 lbf | 78 lbf | 79 lbf | 80 lbf | 81 lbf | 82 lbf | 83 lbf | 84 lbf | 85 lbf | 86 lbf | 87 lbf | 88 lbf | 89 lbf | 90 lbf | 91 lbf | 92 lbf | 93 lbf | 94 lbf | 95 lbf | 96 lbf | 97 lbf | 98 lbf | 99 lbf | 100 lbf |
| newton | 4.4482216 N | 8.8964432 N | 13.3446648 N | 17.7928865 N | 22.2411081 N | 26.6893297 N | 31.1375513 N | 35.5857729 N | 40.0339945 N | 44.4822162 N | 48.9304378 N | 53.3786594 N | 57.8268810 N | 62.2751026 N | 66.7233242 N | 71.1715458 N | 75.6197675 N | 80.0679891 N | 84.5162107 N | 88.9644323 N | 93.4126539 N | 97.8608755 N | 102.3090972 N | 106.7573188 N | 111.2055404 N | 115.6537620 N | 120.1019836 N | 124.5502052 N | 128.9984268 N | 133.4466485 N | 137.8948701 N | 142.3430917 N | 146.7913133 N | 151.2395349 N | 155.6877565 N | 160.1359781 N | 164.5841998 N | 169.0324214 N | 173.4806430 N | 177.9288646 N | 182.3770862 N | 186.8253078 N | 191.2735295 N | 195.7217511 N | 200.1699727 N | 204.6181943 N | 209.0664159 N | 213.5146375 N | 217.9628591 N | 222.4110808 N | 226.8593024 N | 231.3075240 N | 235.7557456 N | 240.2039672 N | 244.6521888 N | 249.1004105 N | 253.5486321 N | 257.9968537 N | 262.4450753 N | 266.8932969 N | 271.3415185 N | 275.7897401 N | 280.2379618 N | 284.6861834 N | 289.1344050 N | 293.5826266 N | 298.0308482 N | 302.4790698 N | 306.9272915 N | 311.3755131 N | 315.8237347 N | 320.2719563 N | 324.7201779 N | 329.1683995 N | 333.6166211 N | 338.0648428 N | 342.5130644 N | 346.9612860 N | 351.4095076 N | 355.8577292 N | 360.3059508 N | 364.7541725 N | 369.2023941 N | 373.6506157 N | 378.0988373 N | 382.5470589 N | 386.9952805 N | 391.4435021 N | 395.8917238 N | 400.3399454 N | 404.7881670 N | 409.2363886 N | 413.6846102 N | 418.1328318 N | 422.5810534 N | 427.0292751 N | 431.4774967 N | 435.9257183 N | 440.3739399 N | 444.8221615 N |
The pound-force (symbol: lbf, sometimes lbf) is a unit of force used in some systems of measurement including English Engineering units and the British Gravitational System. Pound force should not be confused with foot-pounds or pound-feet, which are units of torque, and may be written as "lbf⋅ft". They should not be confused with pound-mass (symbol: lb), often simply called pounds, which is a unit of mass.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| pound-force | lbf | ≡ ɡ0 × 1 lb | = 4.4482216152605 N | Imperial/US |
| pound-forces | newtons | pound-forces | newtons |
|---|---|---|---|
| 1 | = 4.4482216152605 | 6 | = 26.689329691563 |
| 2 | = 8.896443230521 | 7 | = 31.137551306823 |
| 3 | = 13.344664845781 | 8 | = 35.585772922084 |
| 4 | = 17.792886461042 | 9 | = 40.033994537344 |
| 5 | = 22.241108076302 | 10 | = 44.482216152605 |
The newton (symbol: N) is the International System of Units (SI) derived unit of force. It is named after Isaac Newton in recognition of his work on classical mechanics, specifically Newton's second law of motion.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| newton | N | A force capable of giving a mass of one kilogram an acceleration of one metre per second per second. | = 1 N = 1 kg·m/s2 | Metric system SI |
| newtons | pound-forces | newtons | pound-forces |
|---|---|---|---|
| 1 | = 0.22480894309971 | 6 | = 1.3488536585983 |
| 2 | = 0.44961788619942 | 7 | = 1.573662601698 |
| 3 | = 0.67442682929913 | 8 | = 1.7984715447977 |
| 4 | = 0.89923577239884 | 9 | = 2.0232804878974 |
| 5 | = 1.1240447154986 | 10 | = 2.2480894309971 |
| pound-forces | newtons |
|---|---|
| 1 | = 4.4482216 |
| 0.2248089 | = 1 |
| Symbol | Definition |
|---|---|
| ≡ | exactly equal |
| ≈ | approximately equal to |
| = | equal to |
| digits | indicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …) |