February 8, 2024

Unit Converter: Convert Length, Weight, Temperature, and More

Convert between any units of measurement instantly — length, weight, temperature, volume, area, and speed. With the most common conversions explained.

Better than:GoogleUnit ConverterConvertUnits.comCalculator.net

The Most Common Unit Conversions

Most frequent metric-to-imperial conversions worth memorizing:

Length: 1 kilometer = 0.621 miles. 1 meter = 3.281 feet = 39.37 inches. 1 centimeter = 0.394 inches. 1 inch = 2.54 cm. 1 foot = 30.48 cm.

Weight/Mass: 1 kilogram = 2.205 pounds. 1 gram = 0.035 ounces. 1 pound = 453.6 grams. 1 stone (UK) = 14 pounds = 6.35 kg.

Temperature: °F = (°C × 9/5) + 32. °C = (°F − 32) × 5/9. Key reference points: 0°C = 32°F (freezing), 100°C = 212°F (boiling), 37°C = 98.6°F (body temperature), 20°C = 68°F (comfortable room temperature).

Volume: 1 liter = 1.057 US quarts = 0.264 US gallons. 1 US gallon = 3.785 liters. 1 US fluid ounce = 29.57 mL. 1 cup = 236.6 mL.

Frequently Asked Questions

How do you convert Celsius to Fahrenheit?

Formula: °F = (°C × 9/5) + 32, or equivalently °F = (°C × 1.8) + 32. For 25°C: (25 × 1.8) + 32 = 45 + 32 = 77°F. A quick mental math shortcut: double the Celsius temperature, subtract 10%, then add 32. For 20°C: 40 − 4 + 32 = 68°F (exact answer).

How many feet are in a meter?

1 meter = 3.28084 feet (commonly rounded to 3.28). Conversely, 1 foot = 0.3048 meters exactly (this is the exact legal definition). For quick estimates: 3 feet ≈ 1 meter (actually 0.9144m), or think of 1 meter as slightly more than 1 yard.