How do you convert cm to inches?

1 inch = 2.54 cm. To convert cm to inches: divide by 2.54. Example: 30 cm ÷ 2.54 = 11.81 inches. To convert inches to cm: multiply by 2.54.

How do you convert kg to pounds?

1 kg = 2.20462 pounds. To convert kg to pounds: multiply by 2.20462. Example: 70 kg × 2.20462 = 154.32 lbs. To convert pounds to kg: divide by 2.20462.

🔄 200+ Units

Unit Converter

Convert between 200+ units across 10 categories — length, weight, temperature, speed and more. Live results as you type.

From

1 metre

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⚡ Quick conversions

All length conversions

Unit converter — all 10 categories

This converter supports over 200 units across 10 measurement categories. All conversions happen instantly as you type — no button press needed. Click any unit in the results grid to set it as your target.

📏 Length

Metre, foot, inch, yard, mile, km, cm, mm, nautical mile, light-year, furlong, cubit, hand, fathom, parsec and more.

⚖️ Weight/Mass

Kilogram, pound, ounce, gram, tonne, stone, milligram, carat, grain, troy ounce, hundredweight and more.

🌡️ Temperature

Celsius, Fahrenheit, Kelvin and Rankine. Temperature uses exact conversion formulas (not ratios) for accurate results.

💾 Data

Bit, byte, KB, MB, GB, TB, PB — in both binary (1024) and decimal (1000) systems. Also Kbps, Mbps, Gbps.

Frequently asked questions

How do you convert Celsius to Fahrenheit?

°F = (°C × 9/5) + 32. So 0°C = 32°F, 100°C = 212°F, 37°C (body temp) = 98.6°F. To reverse: °C = (°F - 32) × 5/9. Both Kelvin and Rankine are absolute temperature scales starting from absolute zero.

What is the difference between metric and imperial?

Metric (SI) uses powers of 10 — 1 km = 1,000 m = 100,000 cm. Imperial uses historical ratios — 1 mile = 5,280 feet = 63,360 inches. The US primarily uses imperial while most countries use metric. Scientific work almost always uses metric (SI units).

How many kg in a stone?

1 stone = 6.35029 kg = 14 pounds. Stone is primarily used in the UK and Ireland for body weight. To convert your weight: kg ÷ 6.35029 = stones. Example: 70 kg = 11 stone 0.1 pounds (or approximately 11 stone).