Fahrenheit to Celsius

Fahrenheit to Celsius uses C = (F − 32) × 5/9. The inverse relationship for Fahrenheit to Celsius is F = C × 9/5 + 32.

Fahrenheit to Celsius input definition: degrees Fahrenheit use a scale related to Celsius by F = C × 9/5 + 32. For Fahrenheit to Celsius, output definition: degrees Celsius use the scale where absolute zero is −273.15 °C.

Fahrenheit to Celsius check: 0 Fahrenheit = -17.777778 Celsius. Fahrenheit to Celsius check: 20 Fahrenheit = -6.666667 Celsius. Fahrenheit to Celsius check: 100 Fahrenheit = 37.777778 Celsius.

Formula: Celsius = (Fahrenheit - 32) x 5 / 9. Common checks help catch mistakes: freezing water is 0 Celsius or 32 Fahrenheit, room temperature is around 20 to 25 Celsius, and boiling water is around 100 Celsius at sea level. Use these reference points when the celsius result will be used for weather, cooking, science homework, equipment settings, or travel planning.

Common checks: freezing water is 0 Celsius or 32 Fahrenheit, room temperature is around 20 to 25 Celsius, and boiling water is around 100 Celsius at sea level.

• Use this for weather, cooking, science homework, equipment settings, and travel planning.
• Check whether the source uses Celsius, Fahrenheit, or Kelvin before copying the answer.
• Round only after the conversion if the final value needs decimals.

For Fahrenheit to Celsius, the main temperature is formatted with at most 4 decimal places; the rounded line uses at most 2.

Fahrenheit to Celsius uses the fixed unit definitions stated on this page; confirm any industry, legal, historical, or local convention that defines the same label differently.

Fahrenheit to Celsius rejects an empty or non-finite numeric input. For Fahrenheit to Celsius, negative numbers are accepted by the code, including for physical quantities where a negative amount may have no practical meaning. For Fahrenheit to Celsius, very large values remain subject to JavaScript Number precision.

To convert in the other direction, use the reverse converter. The inverse relationship for Fahrenheit to Celsius is F = C × 9/5 + 32.

Fahrenheit to Celsius runs the temperature convert operation in the current browser session. To verify Fahrenheit to Celsius, reproduce its worked example and compare the displayed or downloaded celsius with the stated expected result. When Fahrenheit to Celsius returns a file, open the download and inspect every affected page or image. Fahrenheit to Celsius reads and processes the supplied values in the current browser and does not submit them to an application endpoint. Browser extensions, device security and any manual sharing or download from Fahrenheit to Celsius remain outside the tool’s control.