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Conversion Factors
A list of the most common conversion factors from the Imperial the MKS system of measurements
Overview
The following table shows the conversion factors for many of the units used in Engineering<iframe src="http://www.codecogs.com/ic-269&u=3" frameborder="0" scrolling="no" width="235" height="198"></iframe>
| To Convert | Multiply by | Reciprocal |
|---|---|---|
| Radian to degrees | 57.30 | 0.01745 |
| Inches to metres | 0.0254 | 39.37 |
| Yards to metres | 0.9144 | 1.094 |
| Miles/hour to metres/second | 0.447 | 2.237 |
| Pounds to kilograms | 0.4536 | 2.205 |
| Pounds (force) to newtons | 4.45 | 0.225 |
| Kilograms (force) to newtons | 9.81 | 0.1019 |
| Newton-metres to lb ft | 0.738 | 1.355 |
| Newton-metres to g.cm | 1.019x104 | 9.81x10-5 |
| Horsepower to ft.lb/min | 33,000 | 3.031x10-5 |
| Horsepower to kilowatts | 0.746 | 1.341 |
| Therms to Btu | 100,000 | 10-5 |
| Btu to kilogram-calories | 0.252 | 3.97 |
| Btu to kWh | 2.934x10-4 | 3409 |
| Ft.lb to Btu to joules | 1.356 | 0.7374 |
| Kilogram-calories to joules | 4187 | 2.388x10-4 |
| Joules to kWh | 0.2778z10-6 | 3,600,000 |