Important Fahrenheit Temperatures in Celsius

Direct answer

Important Fahrenheit and Celsius reference temperatures include:

• -40°F = -40°C;
• 32°F = 0°C;
• 50°F = 10°C;
• 68°F = 20°C;
• 77°F = 25°C;
• 86°F = 30°C;
• 98.6°F = 37°C;
• 212°F = 100°C.

To calculate another value, use:

The Fahrenheit to Celsius Converter calculates any whole, decimal, positive, or negative temperature.

Important temperature reference chart

The point where Fahrenheit and Celsius are equal

Fahrenheit and Celsius show the same numerical value at -40 degrees.

This is the only point where the two scales use the same numerical reading.

Water freezing point

The common freezing-point reference for water is:

Actual freezing behavior can be affected by pressure, dissolved substances, and measurement conditions. The values above are the familiar standard reference.

Temperatures near this point include:

• 23°F = -5°C;
• 28.4°F = -2°C;
• 30.2°F = -1°C;
• 32°F = 0°C;
• 33.8°F = 1°C;
• 35.6°F = 2°C.

Water boiling point

The common boiling-point reference for water is:

Boiling temperature changes with atmospheric pressure and elevation, so 212°F and 100°C are standard reference values rather than a universal result under every condition.

Common weather benchmarks

These descriptions are general. Humidity, wind, sunlight, clothing, activity, and personal circumstances affect how conditions feel.

Common room-temperature references

The phrase room temperature does not identify one exact value. It often refers to a range rather than a fixed standard.

• 64.4°F = 18°C;
• 68°F = 20°C;
• 69.8°F = 21°C;
• 71.6°F = 22°C;
• 73.4°F = 23°C;
• 75.2°F = 24°C;
• 77°F = 25°C.

The intended room-temperature value can depend on the building, process, product, or technical standard involved.

Important refrigerator and freezer values

A conversion does not determine the proper appliance setting. Follow current storage guidance and the appliance instructions.

Important body-temperature values

• 96.8°F = 36°C;
• 97.7°F = 36.5°C;
• 98.6°F = 37°C;
• 99.5°F = 37.5°C;
• 100.4°F = 38°C;
• 102.2°F = 39°C;
• 104°F = 40°C.

These are conversions only. Interpretation depends on the thermometer, measurement location, age, symptoms, timing, and professional guidance.

Important oven-temperature values

Exact mathematical conversions may need practical rounding to match available oven controls.

Using reference points to understand nearby values

Memorized benchmarks can help estimate unfamiliar temperatures. For example, 68°F equals 20°C. Since 77°F equals 25°C, a temperature of 72°F must fall between 20°C and 25°C.

Common reference-point mistakes

Treating rounded pairs as exact

Seventy Fahrenheit is often estimated as 20°C, but the exact result is approximately 21.11°C.

Assuming room temperature has one universal value

Room temperature commonly represents a range.

Using standard water points under every condition

Pressure and dissolved substances can affect freezing and boiling.

Using reference values as safety or medical advice

A conversion reference changes units but does not interpret a temperature for a particular situation.

Related Fahrenheit to Celsius guides

Frequently asked questions