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Temperature converter

Enter a temperature in Celsius, Fahrenheit, or Kelvin and see all three values instantly. No formulas to remember, the converter handles the math for you.

Fahrenheit (°F)33.8
Kelvin (K)274.15
Converting from: Celsius (°C)

How it works

Each unit is stored as a multiplier relative to a base unit. When you enter a value, the tool converts it to the base unit first, then multiplies by each target unit's factor. Temperature is handled separately using its own formulas (°C → °F: multiply by 9/5 then add 32; °C → K: add 273.15). All conversion runs in your browser. Our servers are not involved.

Processing runs in your browser

All conversions happen instantly in your browser tab. Our servers are not involved at any point.

Related operations

For converting between bytes, kilobytes, and gigabytes, try the byte converter. To work with fractions alongside metric values, use the fraction calculator. For taking a percentage of a converted value, see the percentage calculator.

Frequently asked questions

How do I convert Celsius to Fahrenheit?
Multiply by 9/5 (1.8) then add 32. For example, 100°C × 1.8 + 32 = 212°F. The formula is: °F = (°C × 9/5) + 32.
What is absolute zero in Celsius and Fahrenheit?
Absolute zero (0 K) is −273.15°C or −459.67°F. It is the theoretical point at which particles have minimum thermal energy.
What is normal body temperature in Celsius and Fahrenheit?
Normal human body temperature is approximately 37°C or 98.6°F, though it varies slightly by individual and time of day.

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