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Temperature Converter.

Convert Celsius, Fahrenheit, and Kelvin temperature scales.

Temperature Converter
°C
°F
(°C × 9/5) + 32 = °F Multiply the temperature in Celsius by 9/5 (or 1.8) and then add 32.

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Units Defined in Temperature

Below is the complete registry of units supported within the conversion tool.

Celsius

°C, c, celsius

The standard metric temperature scale, where water freezes at 0°C and boils at 100°C.

Fahrenheit

°F, f, fahrenheit

Temperature scale primarily used in the US, where water freezes at 32°F and boils at 212°F.

Kelvin

K, k, kelvin

The SI unit of thermodynamic temperature, starting at absolute zero (0 K = -273.15°C).

Popular Temperature Conversions

In-depth guides with formulas, worked examples, and practical tips.

Celsius to Fahrenheit (°C to °F) → Celsius to Kelvin (°C to K) → Fahrenheit to Celsius (°F to °C) →

All Temperature Conversions

Every supported unit pair. Each opens the instant calculator above with the units pre-selected.

Fahrenheit to Kelvin (°F to K) Kelvin to Celsius (K to °C) Kelvin to Fahrenheit (K to °F)
FAQs

Frequently Asked Questions

What temperature is absolute zero in Celsius?

Absolute zero is exactly -273.15°C, or 0 Kelvin.

How do you convert Celsius to Fahrenheit?

Multiply the Celsius temperature by 9/5 (1.8) and then add 32. For example, 10°C is (10 * 1.8) + 32 = 50°F.

At what temperature do Celsius and Fahrenheit meet?

Celsius and Fahrenheit are equal at exactly -40° (i.e. -40°C = -40°F).

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