# Tables of Weights and Measures

## Linear Measure

Measure | Equivalents | |

1 inch | 2.54 centimeters | |

12 inches | 1 foot | 0.3048 meter |

3 feet | 1 yard | 0.9144 meter |

5½ yards | 1 rod (or pole or perch) | 5.029 meters |

16½ feet | ||

40 rods | 1 furlong | 201.17 meters |

8 furlongs | ||

1,760 yards | 1 (statute) mile | 1,609.3 meters |

5,280 feet | ||

3 miles | 1 (land) league | 4.83 kilometers |

## Square Measure

Measure | Equivalents | |

1 square inch | 6.452 square centimeters | |

144 square inches | 1 square foot | 929 square centimeters |

9 square feet | 1 square yard | 0.8361 square meter |

30¼ square yards | 1 square rod (or square pole or square perch) | 25.29 square meters |

160 square rods or 4,840 square yards or 43,560 square feet | 1 acre | 0.4047 hectare |

640 acres | 1 square mile | 259 hectares |

2.59 square kilometers |

## Cubic Measure

Measure | Equivalents | |

1 cubic inch | 16.387 cubic centimeters | |

1,728 cubic inches | 1 cubic foot | 0.0283 cubic meter |

27 cubic feet | 1 cubic yard (in units for cordwood, etc.) | 0.7646 cubic meter |

16 cubic feet | 1 cord foot | |

8 cord feet | 1 cord | 3.625 cubic meters |

**Chain Measure** (for Gunter's, or surveyor's, chain)

Measure | Equivalents | |

7.92 inches | 1 link | 20.12 centimeters |

100 links | 1 chain | 20.12 meters |

66 feet | ||

10 chains | 1 furlong | 201.17 meters |

80 chains | 1 mile (for engineer's chain) | 1,609.3 meters |

1 foot | 1 link | 0.3048 meter |

100 feet | 1 chain | 30.48 meters |

52.8 chains | 1 mile | 1,609.3 meters |

## Surveyor's (Square) Measure

Measure | Equivalents | |

625 square links | 1 square pole | 25.29 square meters |

16 square poles | 1 square chain | 404.7 square meters |

10 square chains | 1 acre | 0.4047 hectare |

640 acres | 1 square mile | 259 hectares |

1 section | 2.59 square kilometers | |

36 square miles | 1 township | 9,324.0 hectares |

93.24 square kilometers |

## Nautical Measure

Measure | Equivalents | |

6 feet | 1 fathom | 1.829 meters |

100 fathoms | 1 cable's length (ordinary)^{1} | |

10 cables’ lengths | 1 nautical mile | 1.852 kilometers^{2} |

6,076, 10333 feet | ||

1 nautical mile | 1.1508 statute miles^{3} | |

3 nautical miles | 1 marine league | 5.56 kilometers |

3.45 statute miles | ||

60 nautical miles | 1 degree of a great circle of the earth |

## Dry Measure

Measure | Equivalents | ||

According to United States government standards, the following are the weights avoirdupois for single bushels of the specified grains: for wheat, 60 pounds; for barley, 48 pounds; for oats, 32 pounds; for rye, 56 pounds; for corn, 56 pounds. Some states have specifications varying from these. | |||

1 pint | 33.60 cubic inches | 0.5505 liter | |

2 pints | 1 quart | 67.20 cubic inches | 1.1012 liters |

8 quarts | 1 peck | 537.61 cubic inches | 8.8096 liters |

4 pecks | 1 bushel | 2,150.42 cubic inches | 35.2383 liters |

1 British dry quart | 1.032 U.S. dry quarts |

## Liquid Measure

Measure | Equivalents | ||

The barrel in Great Britain equals 36 imperial gallons, in the United States, usually 31½ gallons. | |||

1 gill | 4 fluid ounces (see next table) | 7.219 cubic inches | 0.1183 liter |

4 gills | 1 pint | 28.875 cubic inches | 0.4732 liter |

2 pints | 1 quart | 57.75 cubic inches | 0.9463 liter |

4 quarts | 1 gallon | 231 cubic inches | 3.7853 liters |

4 British imperial quarts | 1 imperial gallon | 277.42 cubic inches | 4.546 liters |

## Apothecaries’ Fluid Measure

Measure | Equivalents | ||

See table immediately preceding for quart and gallon equivalents. | |||

^{1}In the U.S. Navy 120 fathoms or 720 feet equals 1 cable's length; In the British Navy, 608 feet equals 1 cable's length. | |||

^{2}By international agreement, 1954 | |||

^{3}The length of a minute of longitude at the equator. Also called geographical, sea, or air mile, and, in Great Britain, Admiralty mile. | |||

1 minim | 0.0038 cubic inch | 0.0616 milliliter | |

60 minims | 1 fluid dram | 0.2256 cubic inch | 3.6966 milliliters |

8 fluid drams | 1 fluid ounce | 1.8047 cubic inches | 0.0296 liter |

16 fluid ounces | 1 pint | 28.875 cubic inches | 0.4732 liter |

1 British pint | 20 fluid ounces |

## Circular (or Angular) Measure

Measure | Equivalent |

60 seconds (″) | 1 minute (′) |

60 minutes | 1 degree (°) |

90 degrees | 1 quadrant |

1 right angle | |

4 quadrants | 1 circle |

360 degrees |

## Avoirdupois Weight

Measure | Equivalents | |

1 grain | 0.0648 gram^{1} | |

1 dram | 1.772 grams | |

27.34 grains | ||

16 drams | 1 ounce | 28.3495 grams |

437.5 grains | ||

16 ounces | 1 pound^{2} | 453.59 grams |

7,000 grains | ||

100 pounds | 1 hundredweight | 45.36 kilograms |

2,000 pounds | 1 ton | 907.18 kilograms |

## Troy Weight

Measure | Equivalents | |

1 grain | 0.0648 gram^{1} | |

3.086 grains | 1 carat | 200 milligrams |

24 grains | 1 pennyweight | 1.5552 grams |

20 pennyweights | 1 ounce | 31.1035 grams |

480 grains | ||

12 ounces | 1 pound | 373.24 grams |

5,760 grains |

## Apothecaries’ Weight

Measure | Equivalents | ||

^{1}The grain is the same in all three tables of weight. | |||

^{2}ln Great Britain, 14 pounds (6.35 kilograms) equals 1 stone, 112 pounds (50.80 kilograms) equals 1 hundred-weight, and 2,240 pounds (1,016.05 kilograms) equal 1 long ton. | |||

1 grain | 0.0648 gram^{1} | ||

20 grains | 1 scruple | 1.296 grams | |

3 scruples | 1 dram | 3.888 grams | |

8 drams | 1 ounce | 31.1035 grams | |

480 grains | |||

12 ounces | 1 pound | 373.24 grams | |

5,760 grains |