Everyday converter
Temperature Converter
This temperature converter switches between Celsius, Fahrenheit, and Kelvin instantly in your browser. It applies °F = °C × 9/5 + 32 and refuses any value below absolute zero.
- Instant results
- Private & secureNo data is uploaded
- Works on all devices
Common temperature units
- Celsius (°C)Water freezes at 0 °C and boils at 100 °C at sea level
- Fahrenheit (°F)The same two points are 32 °F and 212 °F
- Kelvin (K)0 K is absolute zero, which is −273.15 °C
Conversion formula
Every conversion here uses the published factor, not a rounded one.
Example: Celsius to Fahrenheit
°F = °C × 9/5 + 32
Temperature scales have an offset as well as a ratio, so the 32 matters:
25 °C = 77 °F
Figures on this page are shown to seven significant digits. The converter keeps the full precision and rounds only what it displays.
Did you know?
−40 is the one reading where the two everyday scales agree: −40 °C and −40 °F are the same temperature.
Kelvin takes no degree sign. It starts at absolute zero, so 0 K is −273.15 °C, and a change of 1 K is the same size as a change of 1 °C.
Frequently asked questions
Is 37 Celsius a fever?
No. 37 °C is 98.6 °F, a classic average body temperature. A fever is often counted from about 38 °C, which is 100.4 °F.
What is 0 Celsius in Fahrenheit?
0 °C is 32 °F. That is the freezing point of water. Use °F = (°C × 9/5) + 32 for any Celsius value.
What is 100 Celsius in Fahrenheit?
100 °C is 212 °F. That is the boiling point of water at sea level. The same formula is °F = (°C × 9/5) + 32.
What is 350 Fahrenheit in Celsius?
350 °F is 176.67 °C. Subtract 32, then multiply by 5/9. Many US recipes list 350 °F as a standard bake.
Is this temperature converter free with no sign-up?
Yes. This converter is free with no sign-up and no account. Use it as often as you need in your browser.
What is 20 C in Fahrenheit?
20 C is 68 F. Multiply by 9/5 and add 32. 25 C is 77 F and 30 C is 86 F.
What is 100 F in Celsius?
100 F is 37.78 C. Subtract 32 first, then multiply by 5/9. 98.6 F is 37 C.
What is the formula for Celsius to Fahrenheit?
Fahrenheit equals Celsius times 9/5, plus 32. Going back, Celsius equals Fahrenheit minus 32, times 5/9.
Does this page convert Fahrenheit to Celsius too?
Yes, both directions run on this page. Enter Celsius to read Fahrenheit, or enter Fahrenheit to read Celsius.