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  7. Convert fahrenheit to celsius

Convert fahrenheit to celsius

Convert Fahrenheit (°F) to Celsius (°C) instantly.

Formula

(value - 32) × 5/9

SampleConverted
-40 °F-40 °C
0 °F-17.777778 °C
25 °F-3.888889 °C
100 °F37.777778 °C
300 °F148.888889 °C

About °F to °C

Convert Fahrenheit to Celsius when a US-style temperature needs to be read in the metric scale used for science, international weather, medicine, and most global temperature references.

Fahrenheit is common in the United States, while Celsius is the standard everyday temperature scale in most of the world.

The conversion has both an offset and a scale change, so it is not just division by a single number.

A value of 68 °F equals 20 °C.

Use Celsius when matching international forecasts, scientific work, metric specifications, or medical references.

Use Fahrenheit when the source or audience is US-focused and expects that scale.

For health, cooking, or lab temperatures, keep enough precision to match the original measurement.

Removing the Fahrenheit Offset

Fahrenheit places water's freezing point at 32 degrees.

Celsius places that same point at 0 degrees.

Subtracting 32 aligns the zero reference before the scale is converted.

Useful Benchmarks

32 °F is 0 °C.

68 °F is 20 °C.

212 °F is 100 °C under standard atmospheric pressure.

Where Celsius Helps

Celsius is used in most international weather reports and metric specifications.

It is also common in science, medicine, engineering, and cooking outside the United States.

Converting from Fahrenheit helps make US values easier to compare globally.

Fahrenheit

Definition: Fahrenheit is a temperature scale where water freezes at 32 °F and boils at 212 °F under standard atmospheric pressure.

History/Origin: The Fahrenheit scale was developed by Daniel Gabriel Fahrenheit and remains common for everyday temperature use in the United States.

Current use: Fahrenheit is used in US weather forecasts, thermostats, ovens, HVAC settings, body temperature references, and household temperature discussions.

Celsius

Definition: Celsius is a temperature scale where water freezes at 0 °C and boils at 100 °C under standard atmospheric pressure.

History/Origin: Celsius developed from centigrade temperature measurement and became the common metric temperature scale worldwide.

Current use: Celsius is used in science, medicine, weather reporting outside the United States, cooking, engineering, and everyday metric temperature measurement.

Fahrenheit to Celsius Conversion Table

Fahrenheit [°F]Celsius [°C]
-40 °F-40 °C
0 °F-17.777778 °C
10 °F-12.222222 °C
25 °F-3.888889 °C
37 °F2.777778 °C
100 °F37.777778 °C

How to Convert Fahrenheit to Celsius

1 °F = -17.222222 °C

1 °C = 33.8 °F

Formula: (value - 32) × 5/9

Example: 25 °F = -3.888889 °C

  1. Start with the temperature value in degrees Fahrenheit.
  2. Subtract 32 to align the Fahrenheit freezing point with Celsius.
  3. Multiply the result by 5/9.
  4. Report the converted result in degrees Celsius.

Precision note: Use Celsius = (Fahrenheit - 32) x 5/9. Round final values based on whether the context is weather, cooking, medical, or scientific.

Common Use Cases for °F to °C

  • Reading US weather forecasts in Celsius.
  • Converting oven, room, or thermostat values into metric units.
  • Preparing travel, classroom, or medical notes for an international audience.
  • Checking Fahrenheit source data against Celsius-based specifications.

FAQ

What is 32 degrees Fahrenheit in Celsius?

32 °F equals 0 °C.

What is 98.6 degrees Fahrenheit in Celsius?

98.6 °F equals 37 °C.

Why subtract 32 first?

Fahrenheit and Celsius have different zero points, so the offset must be removed before scaling by 5/9.

More Fahrenheit conversions

  • fahrenheit to kelvin