Convert Units
Common Conversions
Quick reference for popular units.
Length: 1 inch = 2.54 cm | 1 mile = 1.609 km
Weight: 1 pound = 0.4536 kg | 1 ounce = 28.35 g
Temperature: °F = (°C × 9/5) + 32
Area: 1 acre = 4047 m² | 1 sq ft = 0.0929 m²
Volume: 1 US gal = 3.785 L | 1 cup = 236.6 mL
Speed: 1 mph = 1.609 km/h | 1 knot = 1.852 km/h