Celsius to Fahrenheit Converter

Convert celsius to fahrenheit instantly — formula shown, chart included, and everything runs in your browser.

Amount

From

Result

33.8

1 Celsius (°C) = 33.8 Fahrenheit (°F)

All temperature units from 1 Celsius (°C)

Unit	Value
Fahrenheit (°F)	33.8
Kelvin (K)	274.15

Worked examples

A 25 °C spring day	25 × 9/5 + 32 = 77 °F
A 180 °C oven (common European baking temp)	180 × 9/5 + 32 = 356 °F → set 350 °F
A 38 °C fever	38 × 9/5 + 32 = 100.4 °F — the usual medical fever threshold

Celsius to Fahrenheit conversion chart

Celsius (°C)	Fahrenheit (°F)
-40	-40
-20	-4
-10	14
0	32
10	50
20	68
25	77
30	86
37	98.6
40	104
100	212
180	356

Need other units? The full Unit Converter covers length, weight, volume, area, temperature, and speed.

How to use this tool

Type your celsius value — the fahrenheit result appears instantly.
Converting the other way (fahrenheit to celsius)? Press the swap button — this page works in both directions.
Use the chart below for common values you can reference without typing.

How it works

Celsius-to-Fahrenheit is the one conversion that isn't a simple multiplication, because the scales cross zero at different points: °F = °C × 9/5 + 32. The anchors worth memorizing: 0 °C = 32 °F (freezing), 37 °C = 98.6 °F (body temperature), 100 °C = 212 °F (boiling), and −40° is the same in both scales.

For weather, the rough rule "double it and add 30" gets you close between 0-30 °C: 20 °C ≈ 70 °F (exact: 68). For cooking, European recipes bake at 180 °C — that's 356 °F, so use a 350 °F oven. A fever threshold of 38 °C is 100.4 °F.

The formula is °F = °C × 9/5 + 32. For example, 0° Celsius = 32° Fahrenheit.

Frequently asked questions

How do I convert celsius to fahrenheit?

°F = °C × 9/5 + 32. Or skip the math: the converter above and the chart below cover it.

What is 0 celsius in fahrenheit?

0 celsius equals 32 fahrenheit.

Can I convert fahrenheit back to celsius?

Yes — use the swap (⇄) button in the converter above, and it flips the direction instantly.