Switch between Celsius, Fahrenheit and Kelvin with offset-aware math.
Switch between Celsius, Fahrenheit and Kelvin with offset-aware math.
Enter values above and click Calculate — results will appear here with the formula explained.
Temperature scales differ twice over: where zero sits and how wide degrees stretch. Fahrenheit divides the freeze–boil span into 180 degrees against Celsius's 100 — hence multiply-by-1.8 — while the −32 correction reconciles their differing zero points.
Kelvin shifts Celsius down by absolute zero, the coldest possible temperature. Because it starts at true zero, scientific formulas use Kelvin exclusively; no negative Kelvin exists.
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Temperature scales differ twice over: where zero sits and how wide degrees stretch. Fahrenheit divides the freeze–boil span into 180 degrees against Celsius's 100 — hence multiply-by-1.8 — while the −32 correction reconciles their differing zero points. Formula: °F = °C × 9⁄5 + 32; K = °C + 273.15
Temperature Converter: Switch between Celsius, Fahrenheit and Kelvin with offset-aware math. Formula: °F = °C × 9⁄5 + 32. Example: A warm 77 °F day converts to (77 − 32) ÷ 1.
Switch between Celsius, Fahrenheit and Kelvin with offset-aware math. Formula: °F = °C × 9⁄5 + 32; K = °C + 273.15
| Field | What to enter |
|---|---|
| Temperature | e.g. 21 |
| From scale | Enter a value |
All fields use the exact formulas shown below — results include step-by-step breakdowns you can verify by hand.
Temperature scales differ twice over: where zero sits and how wide degrees stretch. Fahrenheit divides the freeze–boil span into 180 degrees against Celsius's 100 — hence multiply-by-1.8 — while the −32 correction reconciles their differing zero points.
Kelvin shifts Celsius down by absolute zero, the coldest possible temperature. Because it starts at true zero, scientific formulas use Kelvin exclusively; no negative Kelvin exists.
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A warm 77 °F day converts to (77 − 32) ÷ 1.8 = 25 °C, or 298.15 K — beach weather on every scale.
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