Temperature Converter
Convert temperatures between Celsius, Fahrenheit, and Kelvin
Input
Result
77.00
°F
Temperature Converter
Convert temperatures between Celsius, Fahrenheit, and Kelvin
Features
- Convert between Celsius, Fahrenheit, and Kelvin in real time
- C → F: (C × 9/5) + 32 · F → C: (F − 32) × 5/9
- Absolute-zero check: warns if you enter a value below 0 K (−273.15 °C / −459.67 °F)
- Decimal precision configurable up to 6 places
- Runs entirely in your browser
How to use
- Enter your input data in the provided field.
- Configure any options as needed.
- View the results instantly and copy or download the output.
Tips & Best Practices
- Celsius and Kelvin scales align: ΔC = ΔK. They differ only by the absolute-zero offset of 273.15.
- Fahrenheit has both a different offset (32) and a different scale (9/5). That's why both numbers in the formula change.
- Body temperature: 37 °C ≈ 98.6 °F. Room temperature: 20 °C ≈ 68 °F. Boiling point at sea level: 100 °C = 212 °F = 373.15 K.
- Negative Fahrenheit only happens below −40 °C (where the scales cross). The two scales agree exactly at −40°.
- Everything is computed locally; no values leave your browser.
FAQ
Is this tool free to use?
Yes, completely free with no registration, no limits, and no hidden costs.
Is my data private?
All processing happens in your browser. No data is ever sent to any server or third party.
Does it work offline?
Once loaded, the tool works entirely offline. All processing is done client-side with JavaScript.
Which browsers are supported?
Works in Chrome, Firefox, Safari, Edge, and all modern browsers on desktop and mobile.
Can I use the results commercially?
Yes, all output is yours to use freely in any personal or commercial project without restrictions.