Fahrenheit and Celsius are the two most common temperature scales.
°C = (°F − 32) × 5/9.
°F = °C × 9/5 + 32.
Reach for this tool whenever a unit mismatch is slowing down a task. Instantaneous conversion eliminates the back-and-forth of manual multiplication and removes the risk of using the wrong factor.
The most common conversion error is using an approximate factor recalled from memory rather than the exact conversion constant. For high-precision work, even small rounding differences in the conversion factor compound when applied to large values.
A UK architect receives a specification from a US client with dimensions in feet and inches. Converting each measurement to millimetres with precision ensures the drawings are accurate — approximate mental conversion would introduce errors that compound across multiple linked dimensions.
100°F = 37.78°C.
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