Conversion Factors
| m | cm | km | |
|---|---|---|---|
| 1 meter | 1 | 102 | 10−3 |
| 1 centimeter | 10−2 | 1 | 10−5 |
| 1 kilometer | 103 | 105 | 1 |
| 1 inch | [latex]2.540\times {10}^{-2}[/latex] | 2.540 | [latex]2.540\times {10}^{-5}[/latex] |
| 1 foot | 0.3048 | 30.48 | [latex]3.048\times {10}^{-4}[/latex] |
| 1 mile | 1609 | [latex]1.609\times {10}^{4}[/latex] | 1.609 |
| 1 angstrom | 10−10 | ||
| 1 fermi | 10−15 | ||
| 1 light-year | [latex]9.460\times {10}^{12}[/latex] | ||
| in. | ft | mi | |
| 1 meter | 39.37 | 3.281 | [latex]6.214\times {10}^{-4}[/latex] |
| 1 centimeter | 0.3937 | [latex]3.281\times {10}^{-2}[/latex] | [latex]6.214\times {10}^{-6}[/latex] |
| 1 kilometer | [latex]3.937\times {10}^{4}[/latex] | [latex]3.281\times {10}^{3}[/latex] | 0.6214 |
| 1 inch | 1 | [latex]8.333\times {10}^{-2}[/latex] | [latex]1.578\times {10}^{-5}[/latex] |
| 1 foot | 12 | 1 | [latex]1.894\times {10}^{-4}[/latex] |
| 1 mile | [latex]6.336\times {10}^{4}[/latex] | 5280 | 1 |
Area
[latex]1\,{\text{cm}}^{2}=0.155\,{\text{in.}}^{2}[/latex]
[latex]1\,{\text{m}}^{2}={10}^{4}\,{\text{cm}}^{2}=10.76\,{\text{ft}}^{2}[/latex]
[latex]1\,{\text{in.}}^{2}=6.452\,{\text{cm}}^{2}[/latex]
[latex]1\,{\text{ft}}^{2}=144\,{\text{in.}}^{2}=0.0929\,{\text{m}}^{2}[/latex]
Volume
[latex]1\,\text{liter}=1000\,{\text{cm}}^{3}={10}^{-3}\,{\text{m}}^{3}=0.03531\,{\text{ft}}^{3}=61.02\,{\text{in.}}^{3}[/latex]
[latex]1\,{\text{ft}}^{3}=0.02832\,{\text{m}}^{3}=28.32\,\text{liters}=7.477\,\text{gallons}[/latex]
[latex]1\,\text{gallon}=3.788\,\text{liters}[/latex]
| s | min | h | day | yr | |
|---|---|---|---|---|---|
| 1 second | 1 | [latex]1.667\times {10}^{-2}[/latex] | [latex]2.778\times {10}^{-4}[/latex] | [latex]1.157\times {10}^{-5}[/latex] | [latex]3.169\times {10}^{-8}[/latex] |
| 1 minute | 60 | 1 | [latex]1.667\times {10}^{-2}[/latex] | [latex]6.944\times {10}^{-4}[/latex] | [latex]1.901\times {10}^{-6}[/latex] |
| 1 hour | 3600 | 60 | 1 | [latex]4.167\times {10}^{-2}[/latex] | [latex]1.141\times {10}^{-4}[/latex] |
| 1 day | [latex]8.640\times {10}^{4}[/latex] | 1440 | 24 | 1 | [latex]2.738\times {10}^{-3}[/latex] |
| 1 year | [latex]3.156\times {10}^{7}[/latex] | [latex]5.259\times {10}^{5}[/latex] | [latex]8.766\times {10}^{3}[/latex] | 365.25 | 1 |
| m/s | cm/s | ft/s | mi/h | |
|---|---|---|---|---|
| 1 meter/second | 1 | 102 | 3.281 | 2.237 |
| 1 centimeter/second | 10−2 | 1 | [latex]3.281\times {10}^{-2}[/latex] | [latex]2.237\times {10}^{-2}[/latex] |
| 1 foot/second | 0.3048 | 30.48 | 1 | 0.6818 |
| 1 mile/hour | 0.4470 | 44.70 | 1.467 | 1 |
Acceleration
[latex]1\,{\text{m/s}}^{2}=100\,{\text{cm/s}}^{2}=3.281\,{\text{ft/s}}^{2}[/latex]
[latex]1\,{\text{cm/s}}^{2}=0.01\,{\text{m/s}}^{2}=0.03281\,{\text{ft/s}}^{2}[/latex]
[latex]1\,{\text{ft/s}}^{2}=0.3048\,{\text{m/s}}^{2}=30.48\,{\text{cm/s}}^{2}[/latex]
[latex]1\,\text{mi/h}\cdot \text{s}=1.467\,{\text{ft/s}}^{2}[/latex]
| kg | g | slug | u | |
|---|---|---|---|---|
| 1 kilogram | 1 | 103 | [latex]6.852\times {10}^{-2}[/latex] | [latex]6.024\times {10}^{26}[/latex] |
| 1 gram | 10−3 | 1 | [latex]6.852\times {10}^{-5}[/latex] | [latex]6.024\times {10}^{23}[/latex] |
| 1 slug | 14.59 | [latex]1.459\times {10}^{4}[/latex] | 1 | [latex]8.789\times {10}^{27}[/latex] |
| 1 atomic mass unit | [latex]1.661\times {10}^{-27}[/latex] | [latex]1.661\times {10}^{-24}[/latex] | [latex]1.138\times {10}^{-28}[/latex] | 1 |
| 1 metric ton | 1000 |
| N | dyne | lb | |
|---|---|---|---|
| [latex]1[/latex] newton | 1 | 105 | 0.2248 |
| [latex]1[/latex] dyne | 10−5 | 1 | [latex]2.248\times {10}^{-6}[/latex] |
| [latex]1[/latex] pound | 4.448 | [latex]4.448\times {10}^{5}[/latex] | 1 |
| Pa | dyne/cm2 | atm | cmHg | lb/in.2 | |
|---|---|---|---|---|---|
| *Where the acceleration due to gravity is [latex]9.80665\,{\text{m/s}}^{2}[/latex] and the temperature is [latex]0^\circ\text{C}[/latex] | |||||
| 1 pascal | 1 | 10 | [latex]9.869\times {10}^{-6}[/latex] | [latex]7.501\times {10}^{-4}[/latex] | [latex]1.450\times {10}^{-4}[/latex] |
| 1 dyne/centimeter2 | 10−1 | 1 | [latex]9.869\times {10}^{-7}[/latex] | [latex]7.501\times {10}^{-5}[/latex] | [latex]1.450\times {10}^{-5}[/latex] |
| 1 atmosphere | [latex]1.013\times {10}^{5}[/latex] | [latex]1.013\times {10}^{6}[/latex] | 1 | 76 | 14.70 |
| 1 centimeter mercury* | [latex]1.333\times {10}^{3}[/latex] | [latex]1.333\times {10}^{4}[/latex] | [latex]1.316\times {10}^{-2}[/latex] | 1 | 0.1934 |
| 1 pound/inch2 | [latex]6.895\times {10}^{3}[/latex] | [latex]6.895\times {10}^{4}[/latex] | [latex]6.805\times {10}^{-2}[/latex] | 5.171 | 1 |
| 1 bar | 105 | ||||
| 1 torr | 1 (mmHg) | ||||
| J | erg | ft.lb | |
|---|---|---|---|
| 1 joule | 1 | 107 | 0.7376 |
| 1 erg | 10−7 | 1 | [latex]7.376\times {10}^{-8}[/latex] |
| 1 foot-pound | 1.356 | [latex]1.356\times {10}^{7}[/latex] | 1 |
| 1 electron-volt | [latex]1.602\times {10}^{-19}[/latex] | [latex]1.602\times {10}^{\text{-12}}[/latex] | [latex]1.182\times {10}^{-19}[/latex] |
| 1 calorie | 4.186 | [latex]4.186\times {10}^{7}[/latex] | 3.088 |
| 1 British thermal unit | [latex]1.055\times {10}^{3}[/latex] | [latex]1.055\times {10}^{10}[/latex] | [latex]7.779\times {10}^{2}[/latex] |
| 1 kilowatt-hour | [latex]3.600\times {10}^{6}[/latex] | ||
| eV | cal | Btu | |
| 1 joule | [latex]6.242\times {10}^{18}[/latex] | 0.2389 | [latex]9.481\times {10}^{-4}[/latex] |
| 1 erg | [latex]6.242\times {10}^{11}[/latex] | [latex]2.389\times {10}^{-8}[/latex] | [latex]9.481\times {10}^{-11}[/latex] |
| 1 foot-pound | [latex]8.464\times {10}^{18}[/latex] | 0.3239 | [latex]1.285\times {10}^{-3}[/latex] |
| 1 electron-volt | 1 | [latex]3.827\times {10}^{-20}[/latex] | [latex]1.519\times {10}^{-22}[/latex] |
| 1 calorie | [latex]2.613\times {10}^{19}[/latex] | 1 | [latex]3.968\times {10}^{-3}[/latex] |
| 1 British thermal unit | [latex]6.585\times {10}^{21}[/latex] | [latex]2.520\times {10}^{2}[/latex] | 1 |
Power
[latex]1\,\text{W}=1\,\text{J/s}[/latex]
[latex]1\,\text{hp}=746\,\text{W}=550\,\text{ft}\cdot \text{lb/s}[/latex]
[latex]1\,\text{Btu/h}=0.293\,\text{W}[/latex]
Angle
[latex]1\,\text{rad}=57.30^\circ=180^\circ\text{/}\text{π}[/latex]
[latex]1^\circ=0.01745\,\text{rad}=\text{π}\text{/}180\,\text{rad}[/latex]
[latex]1\,\text{revolution}=360^\circ=2\text{π}\,\text{rad}[/latex]
[latex]1\,\text{rev/min}(\text{rpm})=0.1047\,\text{rad/s}[/latex]