Temperature Conversion
Enter a value, select a unit, and see the result automatically converted to other units.
Calculation Steps
Understand the calculation process by viewing the specific conversion formulas and steps.
Common Temperature Comparisons
A dynamic chart for a visual comparison of common temperature points across different scales. Click the buttons below to update the chart.
Detailed Information
Learn about the conversion formulas and definitions for different temperature scales.
Here are the primary conversion formulas.
(°C × 9/5) + 32 = °F(°F − 32) × 5/9 = °C°C + 273.15 = KK − 273.15 = °C(°F − 32) × 5/9 + 273.15 = K(K − 273.15) × 9/5 + 32 = °FConversion Calculator Temperature Formula Checks
A conversion calculator temperature result is meaningful only when the input scale is known: C = (F - 32) × 5/9, F = C × 9/5 + 32, and K = C + 273.15. Temperature intervals and absolute temperatures are different operations: a change of 1 °C equals a change of 1 K, while a change of 1 °C equals 1.8 °F and must not receive the 32-degree offset. Negative Celsius or Fahrenheit values are valid, but kelvin below zero is not physically defined. Preserve enough internal precision so round-trip conversion does not drift.
- Source scale: Enter a finite numeric value and select the source scale explicitly.
- Offset order: Apply offsets before or after scaling in the correct order.
- Absolute-zero guard: Use kelvin without a degree symbol and never below absolute zero.
- Display precision: Round only the displayed result, not intermediate calculations.
- Calibration distinction: Do not treat a conversion as sensor calibration or measurement accuracy.
