Temperature Converter

Convert Celsius, Fahrenheit, Kelvin, and Rankine with exact formula-based calculations.

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From value From unit Result To unit

°F = (°C × 9/5) + 32

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↔Celsius to FahrenheitConverter ↔Fahrenheit to CelsiusConverter ↔Celsius to KelvinConverter ↔Kelvin to CelsiusConverter ↔Fahrenheit to KelvinConverter ↔Kelvin to FahrenheitConverter

All temperature units

Unit	Symbol	Conversion factor	Quick links
degree Celsius	°C	Formula based	Reference unit
degree Fahrenheit	°F	Formula based	to °C from °C
kelvin	K	Formula based	to °C from °C
degree Rankine	°R	Formula based	to °C from °C

Accuracy and Sources

Temperature conversion is formula based and uses Celsius as the intermediate reference scale. Content was last reviewed on 2026-05-21. For safety-critical work, confirm results against the relevant official standard.

How temperature conversion works

Temperature conversion changes a measurement from one unit to another using a fixed factor or formula. Use the calculator above for instant results, then check the table and related converter links for common values.

Frequently Asked Questions

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What is the base unit for temperature?

The reference base unit used on this page is °C.

Are these temperature conversions accurate?

Yes, the calculator uses the conversion factors listed on the page. For critical work, verify results with an authoritative standard.