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Fahrenheit to Celsius Converter

Convert Fahrenheit to Celsius instantly

°F
Result
0°C

Celsius

Conversion Formula

°C = (°F - 32) × 5/9

Where:

  • °F = Fahrenheit
  • °C = Celsius

What is a Fahrenheit?

The fahrenheit (°F) is a unit of temperature in the imperial system of measurement.

What is a Celsius?

The celsius (°C) is a unit of temperature in the metric system of measurement.

How to Convert Fahrenheit to Celsius

Convert fahrenheit to celsius instantly

Quick Reference:

  • 1 °F = 1.000000 °C
  • 1 °C = 1.000000 °F

Common Fahrenheit to Celsius Conversions

1 °F
= -17.22 °C
5 °F
= -15.00 °C
10 °F
= -12.22 °C
25 °F
= -3.89 °C
50 °F
= 10.00 °C
100 °F
= 37.78 °C

Conversion Reference Table

Fahrenheit (°F)Celsius (°C)
1-17.2222
2-16.6667
3-16.1111
4-15.5556
5-15
10-12.2222
15-9.4444
20-6.6667
25-3.8889
5010
7523.8889
10037.7778
250121.1111
500260
1,000537.7778

Quick reference table showing common fahrenheit to celsius conversions.

Real-World Temperature Conversions

🌡️

Weather Forecasts

Converting temperatures when traveling internationally or reading foreign weather reports. US uses Fahrenheit, most other countries use Celsius.

🍳

Cooking and Baking

Recipe temperatures may be in Celsius or Fahrenheit. Oven settings need conversion for international recipes (e.g., 180°C = 350°F).

🏥

Medical and Health

Body temperature varies by scale: normal is 98.6°F or 37°C. Medical equipment may use either scale depending on the region.

🔬

Scientific Research

Scientists use Kelvin for absolute measurements and Celsius for everyday lab work. Understanding all scales is essential for collaboration.

❄️

HVAC and Climate Control

Thermostats and climate control systems may display in either Celsius or Fahrenheit. Knowing conversions helps set comfortable temperatures.

🏭

Industrial Processes

Manufacturing and industrial processes require precise temperature control. Different machinery may use different scales.

Temperature Conversion FAQs

Common Conversion Mistakes

  • ⚠Confusing the direction of conversion — always check whether you are converting from Fahrenheit to Celsius or vice versa.
  • ⚠Rounding too early in multi-step calculations. Keep full precision until the final result.
  • ⚠Using outdated or approximate conversion factors. Our converter uses values traceable to international measurement standards.

Sources & Standards

Conversion factors on this page are based on definitions from the International Bureau of Weights and Measures (BIPM) and the National Institute of Standards and Technology (NIST). All factors are accurate to at least 6 decimal places.

Last updated: November 27, 2025