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Key Features
Instant Calculation
Get accurate results in real time with our optimized algorithm.
Mobile Friendly
Fully responsive design. Works on all devices & screen sizes.
Privacy Focused
Your data stays on your device. We don't store any inputs.
100% Free
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Temperature is one of the few unit conversions that isn't a simple multiplication — Celsius, Fahrenheit, and Kelvin scales have different zero points, so converting between them needs an offset, not just a factor.
This tool converts between Celsius, Fahrenheit, and Kelvin using the exact standard formulas for each.
How it works
Enter a temperature value, choose the scale you're converting from and the scale you want to convert to. The tool converts your value to Celsius internally first, then to your target scale, so any combination works correctly.
- Enter value.
- Enter from.
- Enter to.
- Click Calculate to see your results.
Examples
Converting body temperature
98.6°F converts to exactly 37°C — normal human body temperature in both scales.
Converting freezing and boiling points
0°C (freezing) is 32°F and 273.15K; 100°C (boiling) is 212°F and 373.15K.
Who should use it
- Converting weather temperatures between Celsius and Fahrenheit while traveling.
- Converting scientific measurements to or from Kelvin.
Industry applications
- Science and engineering
- Weather and travel
Advantages
- Uses the exact standard conversion formulas, not approximations.
- Supports all three commonly used temperature scales.
Limitations
- Only supports Celsius, Fahrenheit, and Kelvin — not less common scales like Rankine.
Common mistakes to avoid
- Applying a simple ratio (like Celsius × 1.8) without also adding the 32-degree offset when converting to Fahrenheit.
Best practices
- Use Kelvin for scientific/absolute temperature contexts, and Celsius or Fahrenheit for everyday contexts.
Tips
- Remember 0°C = 32°F and 100°C = 212°F as quick reference points to sanity-check any conversion.