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US/Metric Conversion Chart

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> US/Metric Conversion Chart

As designers, we occasionally get drawings and requests that have callouts for physical properties whose weights and measures are different thanthose with which we are accustomed. Here is a cheat sheet on the most common conversions. (A special thanks to those who have contributed to

this information base. Additions and/or corrections welcome).

Weight Conversion

PSI to MPa multiply by 0.00690

MPa to PSI multiply by 145

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

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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

SurfaceFinishes

U.S. MicroInch

U.S. MicroMeter

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

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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 meter 1.196 square yards

1 hectare 2.47 acres

1 square kilometer 0.386 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

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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

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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

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