Temperature Converter for Celsius, Fahrenheit and Kelvin
Convert Celsius, Fahrenheit and Kelvin instantly.
Temperature is the measurement most likely to trip you up at the wrong moment: a recipe in Celsius, an oven in Fahrenheit, a science problem in Kelvin. This converter moves between all three scales instantly in either direction, shows all three results at once, and refuses values below absolute zero. Two anchors cover most daily life: water freezes at 0 degrees Celsius (32 Fahrenheit) and a comfortable room sits near 20 degrees Celsius (68 Fahrenheit).
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About Temperature Converter
Few measurements cause as much everyday friction as temperature. A recipe says 180°C and your oven speaks Fahrenheit; a weather report says 72°F and you're trying to decide if that's jacket weather; a science class demands Kelvin and you'd swear the scale is just showing off.
This converter moves between Celsius, Fahrenheit, and Kelvin instantly, in both directions, and warns you if a value would fall below absolute zero, the point where molecular motion theoretically stops (−273.15°C). That guard matters because the scales behave differently at the extremes: Kelvin starts at absolute zero and has no negative values, while Celsius and Fahrenheit happily go below zero.
Type the temperature, choose the scale you have and the one you want, and the swap button flips the direction. Two anchor pairs carry you through most daily life: water freezes at 0°C / 32°F and boils at 100°C / 212°F, and a comfortable room sits near 20°C / 68°F. For the formula-inclined: °F = °C × 9/5 + 32.
Worked example: 72 degrees Fahrenheit converts to about 22.2 degrees Celsius and 295.4 Kelvin. That is a warm room, not a hot day, which is why the Fahrenheit number looks higher than the Celsius number for the same temperature.
How to use Temperature Converter
- Type the temperature value.
- Choose the from and to scales.
- Use Swap to reverse the direction instantly.
- Read all three scales in the result to double-check the conversion before using it.
Why use this tool?
- Warns you below absolute zero
- Shows all three scales at once
- Free with no signup
Tips for best results
- Memorize two anchors, 0°C = 32°F (freezing) and 20°C = 68°F (room temp), and estimate from there.
- For oven conversions, 180°C ≈ 350°F and 200°C ≈ 400°F cover most baking.
- When converting temperature differences (not absolute temps), just multiply by 9/5 or 5/9, no ±32 needed.
- Kelvin is Celsius + 273.15; it's the scale for science because it starts at absolute zero.
- Fever check: 38°C is 100.4°F, the commonly used fever threshold.