About this calculator
Enter a temperature and choose the scales. Unlike other units, temperature scales have different zero points, so the conversion is not a simple multiplication.
How to use it
- Enter the value.
- Choose the unit it is in and the unit you want.
- Read the result, or see every unit in the table.
The formula
F = C × 9 ÷ 5 + 32; C = (F − 32) × 5 ÷ 9; K = C + 273.15
- C
- degrees Celsius
- F
- degrees Fahrenheit
- K
- kelvin
Worked example
Body temperature
- 37 °C × 9 ÷ 5 + 32 = 98.6 °F.
- 100 °F is (100 − 32) × 5 ÷ 9 = 37.8 °C, a mild fever.
- 37 °C is 310.15 K.
What the result means
A quick estimate for Celsius to Fahrenheit is to double it and add 30; use the exact formula when it matters.
Assumptions
- Readings above absolute zero (−273.15 °C).
Limitations
- Not for temperature differences: a change of 1 °C equals a change of 1.8 °F.
Frequently asked questions
What is 37 °C in Fahrenheit?
98.6 °F, normal body temperature.
Is 100 °F a fever?
Yes, 100 °F (37.8 °C) is a mild fever in adults.
How do I convert Fahrenheit to Celsius?
Subtract 32, then multiply by 5 and divide by 9.
Last reviewed on 3 October 2026. Found a mistake? Tell us.