Weight Converter

Use this free weight converter to instantly convert between pounds, kilograms, ounces, grams, and stones. Enter any value and all units update automatically.

How to use this Weight Converter

Enter a value in any field and all other units update automatically. Type a number in the inches field to instantly see the equivalent in feet, yards, miles, centimeters, meters, and kilometers. Type in any metric or imperial field and all others convert at the same time. Clear any field to reset the calculator.

Frequently asked questions

Q: How many centimeters are in an inch?
A: One inch equals exactly 2.54 centimeters. This is a fixed international standard, not an approximation. So 12 inches (one foot) equals exactly 30.48 centimeters, and one meter equals approximately 39.37 inches.

Q: How many feet are in a mile?
A: There are exactly 5,280 feet in one mile, and 1,760 yards. One mile equals approximately 1.609 kilometers. Conversely, one kilometer equals approximately 0.621 miles. A 5K race is 5 kilometers, which is approximately 3.107 miles.

Q: What is the difference between the metric and imperial systems?
A: The imperial system (inches, feet, yards, miles) is primarily used in the United States and a few other countries. The metric system (centimeters, meters, kilometers) is used by the rest of the world and in all scientific applications globally. The metric system is base-10, making conversions between units much simpler — each unit is 10, 100, or 1,000 times the next.

Q: How do I convert height from feet and inches to centimeters?
A: Multiply feet by 12 to convert to inches, then add any remaining inches. Multiply the total inches by 2.54 to get centimeters. For example, 5 feet 10 inches equals 70 inches, and 70 × 2.54 = 177.8 centimeters.

Q: How many meters are in a yard?
A: One yard equals exactly 0.9144 meters. Conversely, one meter equals approximately 1.0936 yards. They are close enough in size that they are sometimes used interchangeably in casual conversation, though the meter is about 3.37 inches longer than a yard.