Temperature Converter

Convert between Celsius, Fahrenheit, and Kelvin instantly.

Reviewed by the WorldCalcs team · Methodology · Last reviewed: June 2026

Result

212 °F

100 °C = 212 °F

All units

100 °C converted into every supported unit.

UnitValue
Celsius (°C)100 °C
Fahrenheit (°F)212 °F
Kelvin (K)373.15 K

What is a temperature converter?

A temperature converter changes a reading between the Celsius (°C), Fahrenheit (°F) and Kelvin (K) scales. All three measure the same thing but start at different points and use different step sizes.

How it works

Unlike most conversions, temperature uses formulas, not a single ratio, because the scales have different zero points. Celsius to Fahrenheit is °F = °C × 9/5 + 32. Celsius to Kelvin is K = °C + 273.15. The tool applies the right formula for the scales you pick.

All calculations happen in your browser. Nothing is sent, stored, or tracked.

Results are estimates and may contain errors — for general information only, not professional advice. Always verify before relying on them. Disclaimer

How to use

Enter a temperature, choose the unit you have it in, and the unit you want it in. The converted value appears immediately.

The calculator uses the standard formulas: °F = °C × 9/5 + 32 and K = °C + 273.15. Conversions always pass through Celsius, so going from °F to K (or back) is exact.

Frequently asked questions

What formulas are used?+

Standard SI definitions: °F = °C × 9/5 + 32, K = °C + 273.15, and the corresponding inverses. Conversions always pass through Celsius internally.

Can temperatures go below absolute zero?+

Physically no — absolute zero is 0 K (−273.15 °C, −459.67 °F). The calculator will still compute a number for any input you enter, but values below absolute zero are not physically meaningful.

Do I need to type the degree symbol?+

No. Just enter the number — the unit is selected from the dropdown. The result shows the correct symbol (°C, °F, or K).

What is 100°C in Fahrenheit?+

212°F — the boiling point of water at sea level.

What is 0°C in Fahrenheit?+

32°F — the freezing point of water.

What is absolute zero?+

The lowest possible temperature: −273.15°C, which is 0 K or about −459.67°F.

At what temperature do Celsius and Fahrenheit meet?+

At −40°: −40°C equals −40°F.