Universal Unit Converter

Common unit conversions

• 1 inch = 2.54 cm · 1 foot = 30.48 cm · 1 yard = 0.9144 m
• 1 mile = 1.609344 km · 1 li (里) = 500 m
• 1 lb = 453.592 g · 1 oz = 28.3495 g · 1 ton = 1,000 kg
• 1 mu (亩) = 666.67 m² · 1 hectare = 15 mu · 1 acre = 4,046.86 m²
• 1 L = 1,000 mL · 1 US gallon = 3.785 L

How to use this converter

Pick a category tab, type a value in either box — the other side updates instantly. Switch either dropdown to change units at any time; the conversion is always live and two-way.