What scales does it convert between?

Celsius, Fahrenheit, Kelvin, and Rankine, all updating together when you change any one of them.

How is Celsius converted to Fahrenheit?

With °F = °C × 9/5 + 32. The tool shows the formula it applies for each scale alongside the result.

Yes for Celsius and Fahrenheit. Kelvin and Rankine are absolute scales, so values cannot fall below zero on them.

No. Each scale is derived by a fixed formula in your browser, so the temperature you type is never transmitted.

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Convert temperatures between Celsius, Fahrenheit, Kelvin, and Rankine. Instant results with formula shown.

Temperature

Unit

What scales does it convert between?: Celsius, Fahrenheit, Kelvin, and Rankine, all updating together when you change any one of them.
How is Celsius converted to Fahrenheit?: With °F = °C × 9/5 + 32. The tool shows the formula it applies for each scale alongside the result.
Can it handle temperatures below zero?: Yes for Celsius and Fahrenheit. Kelvin and Rankine are absolute scales, so values cannot fall below zero on them.
Does the value I enter get sent anywhere?: No. Each scale is derived by a fixed formula in your browser, so the temperature you type is never transmitted.

guide

How to Convert Temperature Units Free — Celsius, Fahrenheit, Kelvin

Convert temperatures between Celsius, Fahrenheit, Kelvin, and Rankine in your browser. All four scales update instantly with formulas shown.

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