Accurate temperature conversion
Temperature Converter
Convert Celsius, Fahrenheit, Kelvin, and Rankine for everyday, culinary, and scientific use.
Scientific formulas are applied directly, including negative temperatures and absolute-zero scales.
Other popular conversions
Accurate temperature conversionAll calculations are performed locally in your browser. No values are stored or uploaded.
Features
Temperature Converter Features
Convert Celsius, Fahrenheit, Kelvin, and Rankine for everyday, culinary, and scientific use.
Formula-based accuracy
Uses direct scientific formulas instead of rounded conversion tables.
Live calculation
Temperature results refresh instantly while you type.
Easy scale swap
Reverse your selected scales with one click.
Negative values supported
Convert below-freezing and negative temperatures correctly.
Science ready
Kelvin and Rankine support makes the tool useful beyond everyday weather checks.
Browser-only privacy
No temperature values are stored or transmitted.
Frequently Asked Questions
Multiply Celsius by 9/5 and add 32. For example, 20°C equals 68°F.
Subtract 32 from Fahrenheit and multiply the result by 5/9.
Yes. Negative values are supported, including the -40° point where Celsius and Fahrenheit match.
Kelvin starts at absolute zero and is the SI base unit for thermodynamic temperature.
Rankine is an absolute temperature scale that uses Fahrenheit-sized degrees and starts at absolute zero.
No. The calculation stays entirely in your browser.
