LENGTH
Meters are the standard unit of length in the metric system. The smaller units are 10ths (decimeter), 100ths (centimeter), and 1000ths (millimeter) of a meter. These common examples might help you to visualize the metric units
- A meter is slightly longer than a yard (about 40 inches).
- An aspirin tablet is about one centimeter across (.4 inches).
- A millimeter is about the thickness of a dime.
VOLUME
The metric weight system is based on the gram, with the most common unit being the kilogram (1000 grams). Our comparable units are ounces and pounds
- A kilogram is about 2.2 pounds.
- A kilogram is about 2.2 pounds.
PRESSURE
Pressure is another complicated measurement. Pressure is described as a force or weight applied to a given area. Our common unit is pounds per square inch. Metric units can be expressed in several ways. One is the kilogram per square centimeter (kg/cm 2 ). Another unit of pressure is the Pascal (force of one Newton on an area of one square meter), which equals about 4 ounces on a square yard. Since this is a very small amount of pressure, we usually see the kiloPascal, or kPa (1000 Pascals). Another common automotive term for pressure is the bar (used by German manufacturers), which equals 10 Pascals. Thoroughly confused? Try the examples below
- Atmospheric pressure at sea level is about 14.7 psi.
- Atmospheric pressure at sea level is about 1 bar.
- Atmospheric pressure at sea level is about 1 kg/cm 2 .
- One pound per square inch is about 7 kPa.
CONVERSION FACTORS
| To Convert | To | Multiply By | |
|---|---|---|---|
| LENGTH | |||
| Millimeters (mm) | Inches | .03937 | |
| Inches | Millimeters | 25.4 | |
| Meters (M) | Inches | 39.37 | |
| Meters (M) | Feet | 3.28084 | |
| Feet | Meters | .3048 | |
| Kilometers (Km) | Miles | .62137 | |
| AREA | |||
| Square Centimeters (cm 2 ) | Square Inches | .155 | |
| Square Inches | Square Centimeters | 6.45159 | |
| VOLUME | |||
| Cubic Centimeters | Cubic Inches | .06103 | |
| Cubic Inches | Cubic Centimeters | 16.38703 | |
| Liters | Cubic Inches | 61.025 | |
| Cubic Inches | Liters | .01639 | |
| Liters | Quarts | 1.05672 | |
| Quarts | Liters | .94633 | |
| Liters | Pints | 2.11344 | |
| Pints | Liters | .47317 | |
| Liters | Ounces | 33.81497 | |
| Ounces | Liters | .02957 | |
| WEIGHT | |||
| Grams | Ounces | .03527 | |
| Ounces | Grams | 28.34953 | |
| Kilograms | Pounds | 2.20462 | |
| Pounds | Kilograms | .45359 | |
| WORK | |||
| Centimeter Kilograms | Inch Pounds | .8676 | |
| Pounds/Sq. Inch | Kilograms/Sq. Centimeter | .07031 | |
| Bar | Pounds/Sq. Inch | 14.504 | |
| Pounds/Sq. Inch | Bar | .06895 | |
| Atmosphere | Pounds/Sq. Inch | 14.696 | |
| Pounds/Sq. Inch | Atmosphere | .06805 | |
| TEMPERATURE | |||
| Centigrade Degrees | Fahrenheit Degrees | (C°x 9 / 5 )+32 | |
| Fahrenheit Degrees | Centigrade Degrees | (F°-32)x 5 / 9 | |
CONVERSION FORMULA
| Inches | Decimals | Mm |
|---|---|---|
| 1/64 | .016 | .397 |
| 1/32 | .031 | .794 |
| 3/64 | .047 | 1.191 |
| 1/16 | .063 | 1.588 |
| 5/64 | .078 | 1.984 |
| 3/32 | .094 | 2.381 |
| 7/64 | .109 | 2.778 |
| 1/8 | .125 | 3.175 |
| 9/64 | .141 | 3.572 |
| 5/32 | .156 | 3.969 |
| 11/64 | .172 | 4.366 |
| 3/16 | .188 | 4.763 |
| 13/64 | .203 | 5.159 |
| 7/32 | .219 | 5.556 |
| 15/64 | .234 | 5.953 |
| 1/4 | .250 | 6.350 |
| 17/64 | .266 | 6.747 |
| 9/32 | .281 | 7.144 |
| 19/64 | .297 | 7.541 |
| 5/16 | .313 | 7.938 |
| 21/64 | .328 | 8.334 |
| 11/32 | .344 | 8.731 |
| 23/64 | .359 | 9.128 |
| 3/8 | .375 | 9.525 |
| 25/64 | .391 | 9.992 |
| 13/32 | .406 | 10.319 |
| 27/64 | .422 | 10.716 |
| 7/16 | .438 | 11.113 |
| 29/64 | .453 | 11.509 |
| 15/32 | .469 | 11.906 |
| 31/64 | .484 | 12.303 |
| 1/2 | .500 | 12.700 |
| 33/64 | .516 | 13.097 |
| 17/32 | .531 | 13.494 |
| 35/64 | .547 | 13.891 |
| 9/16 | .563 | 14.288 |
| 37/64 | .578 | 14.684 |
| 19/32 | .594 | 15.081 |
| 39/64 | .609 | 15.478 |
| 5/8 | .625 | 15.875 |
| 41/64 | .641 | 16.272 |
| 21/32 | .656 | 16.669 |
| 43/64 | .672 | 17.066 |
| 11/16 | .687 | 17.463 |
| 45/64 | .703 | 17.859 |
| 23/32 | .719 | 18.256 |
| 47/64 | .734 | 18.653 |
| 3/4 | .750 | 19.050 |
| 49/64 | .766 | 19.447 |
| 25/32 | .781 | 19.844 |
| 51/64 | .797 | 20.241 |
| 13/16 | .813 | 20.638 |
| 53/64 | .828 | 21.034 |
| 27/32 | .844 | 21.431 |
| 55/64 | .859 | 21.828 |
| 7/8 | .875 | 22.225 |
| 57/64 | .891 | 22.622 |
| 29/32 | .906 | 23.019 |
| 59/64 | .922 | 23.416 |
| 15/16 | .938 | 23.813 |
| 61/64 | .953 | 24.209 |
| 31/32 | .969 | 24.606 |
| 63/64 | .984 | 25.003 |
| 1 | 1.000 | 25.400 |
EQUIVALENCIES
Release January 2015