Temperature Converter
Convert between Celsius, Fahrenheit, and Kelvin with exact formulas and live results.
Loading tool…
About this tool
Temperature is the one conversion you cannot do with a simple ratio, because the scales start at different zeros. This tool applies the exact offset formulas every time, so 20°C is always precisely 68°F.
Type a value, pick your units, and the result updates live — with a swap button for the reverse conversion.
How to use
- Enter the temperature value.
- Choose the from and to units.
- Read the converted result; tap swap to reverse it.
Frequently asked questions
°F = °C × 9/5 + 32, and K = °C + 273.15. The tool converts through Celsius as the base for maximum accuracy.
Physically no — 0 K is absolute zero. The converter will still compute the math, but negative Kelvin has no physical meaning.
Fahrenheit set 0° at the coldest temperature he could reliably produce and 96° near body temperature; water's freezing point landed at 32° on that scale.
Related tools
Countdown Timer
Set hours, minutes, seconds — countdown with progress bar, pause, and an audible alarm.
Pomodoro Timer
Customizable Pomodoro timer: focus sessions, short/long breaks, and session counter.
Digital Clock
Live digital clock with seconds, full date, 12/24-hour toggle, and timezone selector.
Days Until Calculator
Enter a future date to see exactly how many days remain — simple and instant.