Unit Converter
March 2026
Metric to Imperial Conversions Made Easy: Real-World Examples for Cooking, Fitness & Travel
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Open the Free Unit Converter →Why Metric and Imperial Still Coexist
The metric system is used by 95% of countries. Imperial persists in the US and partially in the UK for road distances, body weight, and cooking. A free unit converter eliminates the confusion instantly.
Length: Everyday Conversions
| Metric | Imperial | Example |
|---|---|---|
| 1 cm | 0.394 inches | Width of a fingernail |
| 1.8 m | 5 ft 11 in | Typical adult height |
| 5 km | 3.11 miles | Parkrun race distance |
| 42.195 km | 26.22 miles | Marathon distance |
Mental shortcut: multiply miles × 1.6 for km, or km × 0.6 for miles.
Weight for Fitness and Cooking
- 1 kg = 2.205 lbs — 70 kg bodyweight = 154 lbs
- 1 stone = 14 lbs = 6.35 kg
- 1 oz = 28.35 g — 100 g chicken ≈ 3.5 oz
Temperature: Celsius vs Fahrenheit
°F = (°C × 9/5) + 32 — key reference: 0°C = 32°F (freezing), 100°C = 212°F (boiling), 37°C = 98.6°F (body temp), 180°C = 356°F (oven).
Frequently Asked Questions
Fastest km to miles mental conversion?
Multiply km × 0.6 for an approximation (precise: × 0.621).
Why do US and UK gallons differ?
US gallon = 3.785 L; UK Imperial gallon = 4.546 L. Diverged when the US defined its own measures after independence.
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