US/Metric Conversions

Weight Conversion
PSI to MPa multiply by 0.00690
PSI to KPa multiply by 6.895
KPa to PSI multiply by 0.145
ounces to grams multiply by 28.35
grams to ounces multiply by 0.0352
pounds to kilograms multiply by 0.4536
kilograms to pounds multiply by 2.2045
imperial tons to kilograms multiply by 1016
kilograms to imperial tons multiply by 0.00098
Fluid Volume Conversion
U.S. fluid oz. to milliliters multiply by 29.574
milliliters to U.S. fluid oz. multiply by 0.0338
Imperial fluid oz. to milliliters multiply by 28.41
milliliters to imperial fluid oz. multiply by 0.0351
Impact Strength Conversion
Ft-lb/in to J/m(J=Joules) Multiply Ft-lb/in x 53
Dielectric Strength Conversion
V/mil to KV/mm Divide V/mil by 25
Coefficient of Thermal Expansion
in/in/°F to mm/°C Multiply in/in/°F x 1.8
Temperatures
°F to °C °F-32/1.8
°C to °F °C x 1.8 + 32

Surface Finishes

U.S. Micro Inch U.S. Micro Meter Europa Europa Ra (my
1 0.025 N1 0.025
2 0.05 N2 0.05
4 0.10 N3 0.10
8 0.20 N4 0.20
16 0.40 N5 0.40
32 0.80 N6 0.80
63 1.60 N7 1.60
125 3.20 N8 3.20
250 6.30 N9 6.30
500 12.50 N10 12.50
1000 25.00 N11 25.00
2000 50.00 N12 50.00
Metric to U.S. Equivalents Linear Measure
1 centimeter 0.3937 inch
1 meter 39.37 inches
1 meter 1.0936 yards
1 kilometer 0.621 mile
U.S. to Metric Equivalents Linear Measure
1 inch 2.54 centimeters
1 foot 30.48 centimeters
1 foot 0.3048 meter
1 yard 0.9144meter
1 rod 5.029 meters
1 mile 1.609 kilometers
Metric to U.S. Equivalents Square Measure
1 square centimeter 0.155 square inch

1 square meter1.196 square yards1 hectare2.47 acres1 square kilometer0.386 square miles

U.S. to Metric Equivalents Square Measure
1 square inch 6.452 square centimeters
1 square foot 0.0929 square meter
1 square yard 0.8361 square meter
1 acre< 0.4047 hectare
1 square mile 2.59 kilometers
Metric to U.S. Equivalents Weights
1 gram 0.03527 ounce
1 kilogram 2.2046 pounds
1 metric ton 1.102 English tons
U.S. to Metric Equivalents Weights
1 ounce 28.35 grams
1 pound 0.4536 kilograms
1 English ton 0.907 metric ton
Metric to U.S. Equivalents Volumes
1 cubic centimeter 0.061 cubic inch
1 cubic meter 1.308 cubic yards
1 liter 1.0567 quarts/liquid
1 liter 0.264 U.S. gallon
1 hectoliter 2.8373 bushels
U.S. to Metric Equivalents Volumes
1 cubic inch 16.39 cubic centimeters
1 cubic foot 0.0283 cubic meter
1 cubic yard 0.7646 cubic meter
1 quart/dry 1.101 liters
1 quart/liquid 0.9463 liter
1 gallon 3.78541 liters
1 peck 8.810 liters
U.S. to U.S. Equivalents Cubic Measure
1.728 cubic inches 1 cubic foot
27 cubic feet 1 cubic yard
128 cubic feet 1 cord (wood)
2,150.42 cubic inches 1 standard bu.
231 cubic inches 1 U.S. standard gallon
U.S. to U.S. Equivalents Dry Measure
2 pints 1 quart
8 quarts 1 peck
4 pecks 1 bushel
U.S. to U.S. Equivalents Liquid Measure
4 gills 1 pint
2 pints 1 quart
4 quarts 1 gallon
31.50 gallons 1 barrel
U.S. to Imperial Liquid Measure
1 U.S. gallon 0.833 imperial gallon
1 U.S. gallon 3.785 liters
Imperial to U.S. Liquid Measure
1 imperial gallon 1.201 U.S. gallons
1 imperial gallon 4.546 liters
U.S. to U.S. Length Measure
12 inches 1 foot
3 feet 1 yard
5.5 feet 1 rod
40 rods 1 furlong
8 furlongs 1 statute mile
3 land miles 1 league
U.S. to U.S. Mariners Measure
6 feet 1 fathom
120 fathoms 1 cable length
5,280 feet 1 statute mile
6,076.11 feet 1 nautical mile
U.S. to U.S. Square Measure
144 square inches 1 square foot
9 square feet 1 square yard
30.25 square yards 1 square rod
640 square acres 1 square mile