Temperature Converter
Convert temperatures between °C, °F and K with exact formulas.
Calculator
Use the Temperature Converter
Result
—
Formula
°F = °C × 9/5 + 32 · K = °C + 273.15
Step-by-step
- 1
Enter the temperature
Any numeric value.
- 2
Pick the scales
Choose the source and target scales.
Worked example
Example input: value: 100, from: °C, to: °F
Result: 212
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Frequently asked questions
What is the formula to convert C to F?
F = C x 9/5 + 32 — multiply by nine, divide by five, then add thirty-two. Body temperature 37 C becomes 98.6 F through exactly these steps; the calculator applies them for any input.
Which temperature is identical in C and F?
Minus 40: both scales read -40 at the crossover point, since (-40 - 32) x 5/9 returns to -40. Traveling between weather reports in either format, that self-equal point makes a great sanity check.
Why do scientists prefer Kelvin?
Kelvin starts at absolute zero, so its zero point means truly no heat — ratios and physics formulas stay meaningful. The calculator routes conversions through Celsius because the Kelvin offset is fixed at 273.15.