Bookmark this page — the exact factors behind our unit converters.
Length
- 1 inch = 2.54 cm (exact)
- 1 mile = 1.60934 km
- 1 foot = 30.48 cm
Weight
- 1 pound = 0.453592 kg
- 1 ounce = 28.3495 g
- 1 kg = 2.20462 lb
Volume
- 1 US gallon = 3.78541 L
- 1 cup = 236.588 ml
Temperature
- °F = °C × 9/5 + 32
- Memorize: 0°C=32°F, 20°C=68°F, 37°C=98.6°F, 100°C=212°F
Speed & fuel
- 1 mph = 1.60934 km/h
- L/100km = 235.21 ÷ MPG
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