How to Use the Temperature Converter
Pick the unit your value is currently in from the "From Unit" dropdown, pick the unit you want to convert to from the "To Unit" dropdown, enter your number, and press Convert. Use the swap button to quickly reverse the direction of conversion.
Temperature Conversion Formulas
Unlike length or area, temperature scales don't share a common zero point, so each conversion uses its own formula rather than a simple multiplier:
Example Calculation
To convert 20°C to Fahrenheit: (20 × 9/5) + 32 = 68°F. To convert 0 Kelvin (absolute zero) to Celsius: 0 − 273.15 = −273.15°C.
Why Use Our Temperature Converter?
- Free to use, no account needed
- Covers everyday units (Celsius, Fahrenheit) and scientific units (Kelvin, Rankine)
- Instant, accurate results
- Works on mobile, tablet, and desktop
Related Tools
Length Converter
Convert cm, inch, foot, mile & more.
Area Converter
Convert Marla, Kanal, Acre & more.
Scientific Calculator
Trig, log, and power functions.
Frequently Asked Questions
Multiply the Celsius value by 9/5 and add 32. For example, 20°C × 9/5 + 32 = 68°F.
Subtract 32 from the Fahrenheit value, then multiply by 5/9. For example, (68°F − 32) × 5/9 = 20°C.
0 Kelvin, known as absolute zero, is equal to −273.15°C.
Yes. The calculator can be used online without creating an account.