Celsius to Fahrenheit Converter
✓ Link copiedA fast, focused temperature converter for Celsius and Fahrenheit. Type a value into the Celsius box on the left and the Fahrenheit value appears instantly on the right — or type into the Fahrenheit box and the Celsius value updates the other way. There's no button to press: both fields stay in sync live as you type. It uses the exact formula °F = °C × 9/5 + 32, so reference points like 0 °C = 32 °F, 100 °C = 212 °F, and the −40° crossover always line up. Free, private, and runs entirely in your browser — nothing is ever uploaded.
0 °C = 32 °F
How to use
Type a temperature into the Celsius field on the left and read the Fahrenheit result on the right; it updates in real time as you type, with no button to click. To go the other way, type into the Fahrenheit field and the Celsius value updates automatically. Click Copy to put the converted value on your clipboard.
Frequently asked questions
- How do I convert Celsius to Fahrenheit?
- Multiply the Celsius temperature by 9/5 (1.8) and add 32: °F = °C × 9/5 + 32. For example, 20 °C × 1.8 = 36, plus 32 = 68 °F. This tool does the math for you instantly as you type.
- Does it convert both ways?
- Yes. Both fields are live. Type into the Celsius box to get Fahrenheit, or type into the Fahrenheit box to get Celsius — the other side updates automatically in real time. To convert Fahrenheit to Celsius the formula is °C = (°F − 32) × 5/9.
- Is my data uploaded anywhere?
- No. The conversion happens entirely in your browser on your own device. Nothing you type is ever sent to a server.