1 inch = 25.4 mm

12 inches = 1 foot = 30.48 centimeters

3 feet = 1 yard = 0.914 meters

1760 yards = 1 mile = 1.609 kilometers

3 miles = 1 league = 4.828 kilometers -

1 chain (Royal Navy) = 608 feet = 185.31 meters

1 chain (U.S. Navy) = 720 feet = 219.46 meters

1 nautical mile = 6080 feet = 1.825 km

1 nautical mile = 3 nautical miles = 5.55 km -

1 ounce = 28.35 grams

16 ounces = 1 pound = 0.454 kilograms

28 lbs = 1 quart = 12.7 kg

4 quarts = 1 hundredweight = 50.8 kilograms

20 quintals = 1 ton = 1016.04 kg -

4 and Le = 1 pint = 1.201 pint (US) = 0.568 liters

2 pints = 1 quart = 1.201 quart = 1.136 liters

4 quarts = 1 gallon = 1.201 gallons = 4.546 liters -

1 square inch = 6.452 square centimeters

144 square inches = 1 square foot = 92.03 square centimeters

9 square feet = 1 square yard = 0.836 square meters

484 square yards = 1 square measuring chain = 404.62 square meters

4840 square yards = 1 acre = 0.405 hectares

40 square poles = 1 Ruth = 10.116 acres

4 Ruth = 1 acre = 0.405 hectares

640 acres = 1 square mile = 2.59 square kilometers or 259 hectares