Temperature Converter
Last updated: June 4, 2026Celsius, Fahrenheit and Kelvin.
Temperature Converter is a free online calculator to celsius, Fahrenheit and Kelvin. It runs entirely in your browser, so your files never leave your device — nothing is uploaded. There's no sign-up, no watermark, and it works on any modern browser on desktop or mobile.
How to use Temperature Converter
The Temperature Converter instantly converts between Celsius, Fahrenheit and Kelvin. Type a value, choose its unit, and see the other two at once. Free, accurate and runs entirely in your browser.
Read the full guide: Temperature Converter: Celsius, Fahrenheit, Kelvin
- 1Enter a temperature.
- 2Choose its unit (°C, °F or K).
- 3Read the converted values.
All three units
See Celsius, Fahrenheit and Kelvin together.
Instant
Results update as you type.
Free & private
Runs on your device with no sign-up.
Convert oven temps for foreign recipes
Following a recipe written in Celsius when your oven dial reads Fahrenheit (or vice versa) is a quick mix-up. Type 180°C and instantly see 356°F, or 200°C as 392°F, so a British bake or American cookie sheet comes out right. Decimals are handled, letting you nail exact roasting and pastry settings without second-guessing the math mid-recipe.
Read a fever in the other scale
Thermometers and health advice often mix units, so a reading can feel meaningless until converted. Enter 38°C to see 100.4°F, or check that 37°C equals normal 98.6°F. Whether your thermometer shows Celsius and the guidance lists Fahrenheit, or the reverse, you get the matching value in seconds to judge whether a temperature is mild, elevated, or worth acting on.
Convert Kelvin for science homework
Physics and chemistry problems demand Kelvin for gas laws, thermodynamics, and absolute-zero questions, but data is usually given in Celsius. Enter a value and read all three scales at once: 25°C becomes 298.15 K, while 0 K shows as -273.15°C. Negative inputs work too, making it easy to check lab figures, homework answers, and exam practice without memorizing offset formulas.
Temperature Converter — frequently asked questions
How do I convert Celsius to Fahrenheit?
Multiply by 9/5 and add 32. For example 100°C = 212°F. This tool does it instantly, both ways.
What is normal body temperature?
About 37°C, which is 98.6°F or 310.15 K.
Is it free?
Yes, completely free.
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