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Celsius to Fahrenheit Converter

°C to °F (and back) with the exact formula.

Quick answer: Convert Celsius to Fahrenheit online instantly. Accurate C to F temperature calculator for weather, travel, and cooking.

Celsius → Fahrenheit77

exact international definitions — computed locally

Convert temperatures between Celsius and Fahrenheit for weather, cooking, and travel.

How it works

  1. Enter the temperature in Celsius.
  2. The tool applies the specific offset formula (°C × 9/5 + 32).
  3. Read the temperature in Fahrenheit.

Frequently asked questions

What is 25 °C in Fahrenheit?

77 °F — pleasant room-to-warm weather.

Quick mental rule?

Double the °C and add 30 (approximate): 20 °C → ~70 °F (exact: 68).

Why does the US use Fahrenheit?

Historical adoption; Fahrenheit's finer degrees suited weather reporting before decimals were common.

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