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Convert temperatures between Celsius, Fahrenheit, and Kelvin in your browser, with absolute zero enforced.
Enter one temperature and see Celsius, Fahrenheit, and Kelvin together, each with a copy button.
No premature rounding, and results are shown with up to 6 decimals without floating-point noise.
Anything below -273.15 C, -459.67 F, or 0 K is rejected, whichever unit you type.
Results update as you type or switch units, with no button to press.
When you use Temperature Converter, your data never leaves your browser. All transformations execute in-memory on your local machine with zero server uploads. Web assets are downloaded to run the tool, but your input data is never transmitted.
No. The conversion runs in your browser. The page does download the code needed to run the tool.
F = C x 9/5 + 32, K = C + 273.15, C = (F - 32) x 5/9, and C = K - 273.15, applied without intermediate rounding.
Temperatures below absolute zero (0 K, -273.15 C, or -459.67 F) are physically impossible, so they are rejected in every unit. Non-numeric input is rejected too.
Celsius and Fahrenheit are equal at -40: -40 C is exactly -40 F.
Convert bytes, KB, MB, GB, TB and KiB, MiB, GiB, TiB in your browser, keeping decimal and binary units clearly apart.
Convert integers between binary, octal, decimal, and hexadecimal in your browser, exactly, even for numbers beyond 2^53.
Find a percentage of a number, what percent one number is of another, or the percentage change between two values, in your browser.
Enter a temperature and choose its unit. Results are rounded to at most 6 decimals for display only. Nothing colder than absolute zero (-273.15 °C, -459.67 °F, 0 K) is accepted. Processed locally in your browser.