Celsius to Fahrenheit converter

Type a temperature in Celsius or Fahrenheit — you’ll get an exact conversion and see exactly where it sits on the scale.

The formula is exact: °F = °C × 9/5 + 32 (and the reverse) — no “double it and add 30” shortcuts. Need absolute temperature? Open Kelvin ↔ Celsius.

Input data

Result

Enter a temperature value.

How results are calculated

°C → °F: °F = °C × 9/5 + 32.

°F → °C: °C = (°F − 32) × 5/9.

It's a straightforward linear formula, exact down to the last decimal — the only limit is how precisely you type the value in.

How to use the calculator

  1. Enter the temperature value to convert.
  2. Choose a direction: °C → °F or °F → °C.
  3. Click Calculate or watch the live result as you type.
  4. Check the scale visualization below the form to see exactly where that lands on the thermometer.

Usage examples

Example 1 — Body temperature

  • Value: 37 °C
  • Direction: °C → °F

98.60 °F

The classic "normal" body temperature, commonly quoted in °F in the US.

Example 2 — Water freezing point

  • Value: 0 °C
  • Direction: °C → °F

32.00 °F

The freezing point of water — one of the two reference points shared by both scales.

Example 3 — Oven temperature

  • Value: 180 °C
  • Direction: °C → °F

356.00 °F

A typical baking temperature in a European recipe — handy when following US recipes.

FAQ

How do I convert °C to °F?

°F = °C × 9/5 + 32. The other way: °C = (°F − 32) × 5/9.

When should I use °C vs °F?

°C is the everyday standard in most of the world. °F still rules daily life in the US.

Can the result be negative?

Sure — below freezing in °C, or below 32 °F, you’ll see negative numbers.

How accurate is this?

Pure formula arithmetic — no approximations. We usually show 1–2 decimals so it’s readable.

Where do people usually mess this up?

The “double it and add 30” shortcut — close-ish, but not exact. Or mixing up the order: subtract 32 first, then multiply by 5/9.

What’s normal body temperature in °F?

About 98.6 °F (≈ 37 °C).

Do decimals work?

Yes — type them with a dot or a comma.

What about Kelvin?

There’s a separate Kelvin ↔ Celsius converter for absolute temperature.

Related calculators