Temperature is measured in units such as °C, °F, K. Pick a source and target unit above, enter a value, and the result appears instantly — free and entirely in your browser. Below you'll find the most common individual conversions as dedicated pages.
Which temperature units are there?
- Celsius (°C) — Degrees Celsius (°C) is the everyday metric temperature scale: water freezes at 0 °C and boils at 100 °C at sea level. It is used almost everywhere except the United States.
- Fahrenheit (°F) — Degrees Fahrenheit (°F) is the temperature scale used mainly in the United States: water freezes at 32 °F and boils at 212 °F, giving 180 degrees between the two points.
- Kelvin (K) — The kelvin (K) is the SI base unit of temperature. It starts at absolute zero (0 K = −273.15 °C), the point where molecular motion stops, and is used throughout science.
Key facts about temperature
Celsius is standard in most of the world, Fahrenheit dominates in the United States, and kelvin is the scientific scale. Recipes, weather and travel constantly require switching between them.
By international definition, water freezes at 0 °C (32 °F, 273.15 K) and boils at 100 °C (212 °F) at standard atmospheric pressure (NIST). Normal human body temperature is about 37 °C (98.6 °F).
How to use the temperature converter
- Pick the source unit and enter the temperature value.
- Pick the target unit — the result appears instantly.
- Use the swap button to reverse the direction.
Everything runs locally in your browser — no uploads, no waiting, no limits, and it even works offline.