Celsius to Fahrenheit Converter

Celsius to Fahrenheit Converter guide

What does this converter do?

This page converts celsius (°C) to fahrenheit (°F) instantly as you type. It is one focused pair from the full Temperature converter, which handles every supported temperature unit in both directions.

How is the conversion calculated?

°F = °C × 9 ÷ 5 + 32. Multiply the Celsius value by 9, divide by 5, then add 32. The factor is fixed, so the math is deterministic and repeatable.

When °C to °F comes up

You are checking a weather forecast abroad, reading a metric thermometer or fever reading for someone who thinks in Fahrenheit, setting an American oven for a recipe written in Celsius, or interpreting a car, aquarium, or thermostat display set to metric. Travellers to the US, and Americans reading European news about heatwaves, are the usual visitors in this direction.

Quick mental rule

Double the Celsius and add 30: 20 °C → 40 + 30 = 70 °F against the exact 68 °F. The rule is exact at 10 °C and drifts 1 °F for every 5 °C away from it — fine for weather, but 4 °F high at 30 °C and useless for oven temperatures.

Worked example

Worked example: 37 °C converts to 98.6 °F. Change the input above to convert your own value.

Common values

The reference table lists frequently searched amounts such as 1, 10, and 100 °C. Amounts are shown rounded for readability; the live result keeps full precision.