Science Tool · 🌡️

Temperature Converter

Convert temperatures between Celsius, Fahrenheit, and Kelvin instantly. Free, accurate, no sign-up.

📖 Read the complete Temperature Converter guide →

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Converted Values

Formula

°F = (°C × 9/5) + 32 | K = °C + 273.15

Example

100°C → 212°F → 373.15 K (boiling point of water)

Frequently Asked Questions

What is absolute zero?

0 Kelvin = −273.15°C = −459.67°F — theoretically the coldest possible temperature.

Why does the US use Fahrenheit?

Historical convention. Most of the world uses Celsius as part of the metric system.

Where do Celsius and Fahrenheit meet?

At −40°. Both scales show the same reading at −40.

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