CONVERSION CHARTS FOR METRIC AND ENGLISH (US) UNITS
LENGTH, WEIGHT, AREA AND VOLUME

There is a number of different systems of measurement in practical use. Most of the world has adapted a decimal system called metric. Its main advantage is all multiples and submultiples of the base units are related to the base unit by factors of powers of ten. Technically, there are various metric systems. Currently International System of Units (SI) which is based on meter, kilogram and second is recognized as the standard one. In US the imperial and customary units are still utilized in trade and household use.
Here you will find metric conversion charts for some of the common quantities.
THE UNITS OF LENGTH

METRIC

IMPERIAL (US)

1000 microns 
=

1 millimeter 
1000 mils 
=

1 inch 
10 millimeters 
=

1
centimeter 
12
inches 
=

1
foot 
10 centimeters 
=

1
decimeter 
3
feet 
=

1
yard 
10 decimeters 
=

1 meter 
22
yards 
=

1
chain 
10 meters

=

1 decameter

10
chains 
=

1
furlong 
1000 meters 
= 
1kilometer 
8
furlongs
(5280 feet) 
= 
1
mile 
LENGTH CONVERSION TABLE

IMPERIAL (US) TO METRIC

METRIC TO IMPERIAL (US)

1 mil 
= 
0.0254 mm 
1 millimeter 
≈

39.4 mils 
1 inch 
= 
25.4 millimeters 
1 centimeter 
≈

0.39 inches 
1 foot 
= 
30.48 centimeters 
1 meter 
≈

3.28 feet 
1 yard 
≈

0.914 meters 
1 meter 
≈

1 yard 
1 mile 
≈

1.609
kilometers 
1 kilometer 
≈

0.621 miles 
THE UNITS OF CAPACITY (VOLUME)

METRIC

ENGLISH (US)

1 cubic centimeter 
= 
1 milliliter 
3 teaspoons 
= 
1 tablespoon 
1000 milliliters 
= 
1 liter 
2 tablespoons 
= 
1 fluid ounce 
1000 liters 
= 
1 cubic meter 
4 fluid ounces 
= 
1 cup 



2 cups 
= 
1 pint 



2 pints (8 fl.ounces) 
= 
1 quart 



4 quarts 
= 
1 gallon 
CAPACITY (
VOLUME) CONVERSION TABLE

ENGLISH (US) TO METRIC

METRIC TO ENGLISH (US)

1 drop (metric) 
= 
0.05 milliliters 
1 milliliter 
= 
20 drops (metric) 
1 teaspoon (US) 
≈

4.93 milliliters 
1 milliliter 
≈

1/5 teaspoons (US) 
1 tablespoon (US) 
≈

14.79 milliliters 
1 liter 
≈

1.06 quarts (US) 
1 fluid ounce (US) 
≈

29.57 milliliters 
1 cubic meter 
≈

1.31 cubic yards (264.2 gallons) 
1 quart (US) 
≈

0.95 liters 



1 gallon (US) 
≈

3.79 liters 



THE UNITS OF WEIGHT

METRIC

IMPERIAL (US)

1000 milligrams 
= 
1 gram 
16 ounces 
= 
1 pound 
1000 grams 
= 
1 kilogram 
100 pounds 
= 
1 hundredweight 
1000 kilogram 
= 
1 ton 
2000 pounds 
= 
1 ton (US) 
WEIGHT CONVERSION TABLE

IMPERIAL (US) TO METRIC

METRIC TO IMPERIAL (US)

1 ounce 
≈

28.35 grams 
1 gram 
≈

0.035 ounces 
1 pound 
≈

453.6 grams 
1 kilogram 
≈

2.21 pounds 
1 US ton 
≈

907.2 kilogram 
1 ton 
≈

1.10 US tons 
THE UNITS OF AREA

METRIC

ENGLISH (US)

100 square millimeters 
= 
1 square centimeter 
144 square inches 
= 
1 square foot 
10000 square cm 
= 
1 square meter 
9 square feet 
= 
1 square yard 
10000 square meters 
= 
1 hectare 
4840 square yards 
= 
1 acre 
100 hectares 
= 
1 square kilometer 
640 acres 
= 
1 square mile 
AREA CONVERSION TABLE

ENGLISH (US) TO METRIC

METRIC TO ENGLISH (US)

1 square inch

≈

6.45 sq. centimeters

1 square centimeter 
≈

0.155 sq. inches 
1 square foot 
≈

0.09 square meters 
1 square meter 
≈

1.20 square yards 
1 square yard 
≈

0.84 square meters

1 cubic meter 
≈

1.31 cubic yards (264.2 gallons) 
1 acre 
≈

0.40 hectare 
1 hectare 
≈

2.47 acres 
1 square mile 
≈

2.59 sq. kilometers 
1 square kilometer 
≈

0.39 square miles 
Some of provided factors are approximate. Note that not all metric unit names listed in these charts are adapted by SI. For the online conversion tool see our metric conversion calculator.
