APPENDIX 1 Unit Conversions
METRIC |
MULTIPLIER |
U.S. CUSTOMARY |
---|---|---|
Length |
|
|
Millimeters (mm) |
0.0394 |
Inches (in) |
Meters (m) |
3.28 |
Feet (ft) |
Centimeters (cm) |
0.394 |
Inches (in) |
Kilometers (km) |
0.621 |
Miles (mi) |
Nautical mile |
1.15 |
Statute mile |
Area |
|
|
Square centimeters (cm2) |
0.155 |
Square inches (in2) |
Square meters (m2) |
10.8 |
Square feet (ft2) |
Square meters (m2) |
1.12 |
Square yards (yd2) |
Square kilometers (km2) |
0.386 |
Square miles (mi2) |
Hectares |
2.47 |
Acres |
Volume |
|
|
Cubic centimeters (cm3) |
0.061 |
Cubic inches (in3) |
Cubic meters (m3) |
35.3 |
Cubic feet (ft3) |
Cubic meters (m3) |
1.31 |
Cubic yards (yd3) |
Milliliters (ml) |
0.0338 |
Fluid ounces (fl oz) |
Liters (L) |
1.06 |
Quarts (qt) |
Liters (L) |
0.264 |
Gallons (gal) |
Cubic meters (m3) |
0.0008 |
Acre- |
Mass |
0.0394 |
Inches (in) |
Grams (g) |
0.0353 |
Ounces (oz) |
Kilograms (kg) |
2.2 |
Pounds (lb) |
Kilograms (kg) |
0.0011 |
Tons (2,000 lb) |
Metric ton (tonne) (t) |
1.1 |
Short ton (tn) |
Velocity |
|
|
Meters per second (m/s) |
3.28 |
Feet per second (ft/s) |
Kilometers per hour (km/h) |
0.62 |
Miles per hour (mph) |
Knots (kt) (nautical mph) |
1.15 |
Miles per hour (mph) |
Temperature |
|
|
Degrees Celsius (°C) |
1.8 then add 32 |
Degrees Fahrenheit (°F) |
Celsius degree (°C) |
1.8 |
Fahrenheit degree (°F) |
U.S. CUSTOMARY |
MULTIPLIER |
METRIC |
---|---|---|
Length |
|
|
Inches (in) |
25.4 |
Millimeters (mm) |
Inches (in) |
2.54 |
Centimeters (cm) |
Feet (ft) |
0.305 |
Meters (m) |
Miles (mi) |
1.61 |
Kilometers (km) |
Statute mile |
0.8684 |
Nautical mile |
Area |
|
|
Square inches (in2) |
6.45 |
Square centimeters (cm2) |
Square feet (ft2) |
0.0929 |
Square meters (m2) |
Square yards (yd2) |
0.836 |
Square meters (m2) |
Square miles (mi2) |
2.59 |
Square kilometers (km2) |
Acres |
0.405 |
Hectares |
Volume |
|
|
Cubic inches (in3) |
16.4 |
Cubic centimeters (cm3) |
Cubic feet (ft3) |
0.0283 |
Cubic meters (m3) |
Cubic yards (yd3) |
0.765 |
Cubic meters (m3) |
Fluid ounces (fl oz) |
29.6 |
Milliliters (ml) |
Quarts (qt) |
0.946 |
Liters (L) |
Gallons (gal) |
3.79 |
Liters (L) |
Acre- |
1,233.5 |
Cubic meters (m3) |
Mass |
|
|
Ounces (oz) |
28.4 |
Grams (g) |
Pounds (lb) |
0.454 |
Kilograms (kg) |
Tons (2,000 lb) |
907.0 |
Kilograms (kg) |
Short ton (tn) |
0.907 |
Metric ton (tonne) (t) |
Velocity |
|
|
Feet per second (ft/s) |
0.3049 |
Meters per second (m/s) |
Miles per hour (mph) |
1.6 |
Kilometers per hour (km/h) |
Miles per hour (mph) |
0.8684 |
Knots (kt) (nautical mph) |
Temperature |
|
|
Degrees Fahrenheit (°F) |
0.556 after subtracting 32 |
Degrees Celsius (°C) |
Fahrenheit degree (°F) |
0.556 |
Celsius degree (°C) |