Temperature Converter
Convert between Celsius, Fahrenheit and Kelvin temperature scales instantly.
🌡️ Temperature Converter
Temperature Converter — Free Celsius, Fahrenheit & Kelvin
Convert between Celsius, Fahrenheit, and Kelvin instantly with our free online temperature converter. Enter a value in any unit and see all conversions simultaneously — useful for cooking, science, weather, and travel. No account required.
Temperature unit confusion is extremely common — especially when cooking with international recipes, checking weather forecasts from different countries, or studying science. The US uses Fahrenheit while most of the world uses Celsius. Scientists use Kelvin. Our converter handles all three instantly.
Temperature Conversion Formulas
- Celsius to Fahrenheit: (°C × 9/5) + 32 = °F
- Fahrenheit to Celsius: (°F − 32) × 5/9 = °C
- Celsius to Kelvin: °C + 273.15 = K
- Kelvin to Celsius: K − 273.15 = °C
- Fahrenheit to Kelvin: (°F − 32) × 5/9 + 273.15 = K
Common Temperature Reference Points
- Water freezes: 0°C / 32°F / 273.15K
- Body temperature: 37°C / 98.6°F / 310.15K
- Water boils: 100°C / 212°F / 373.15K
- Room temperature: ~22°C / ~72°F / 295.15K
- Absolute zero: −273.15°C / −459.67°F / 0K
How to Convert Temperatures — Step by Step
- Select input unit: Choose Celsius, Fahrenheit, or Kelvin.
- Enter the value: Type the temperature you want to convert.
- View all conversions: Results in all three units appear instantly.
- Copy: Click any result to copy it to clipboard.
- Clear and convert another: Enter a new temperature value.
❓ Frequently Asked Questions
Celsius uses 0° for freezing and 100° for boiling water. Fahrenheit uses 32° for freezing and 212° for boiling. The US mainly uses Fahrenheit; most countries use Celsius.
Kelvin is the SI base unit for temperature, used in science and engineering. It starts at absolute zero (−273.15°C) — the coldest temperature theoretically possible.
37°C = 98.6°F — this is normal human body temperature.
A comfortable room temperature is typically 20–22°C (68–72°F).
Yes, 100% free with no account required.
Yes — negative temperatures (below freezing) are fully supported.
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