Celsius to Fahrenheit Calculator
Convert Celsius to Fahrenheit instantly with our free calculator. Enter any °C temperature and get the exact °F equivalent with step-by-step formula.
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Purpose
Convert Celsius to Fahrenheit quickly and accurately with this free calculator. Whether you're sharing temperatures with friends in the US, following American recipes, or interpreting US weather reports, this tool makes conversion effortless.
Celsius (°C) is used by most countries worldwide and in scientific contexts, while Fahrenheit (°F) is primarily used in the United States. This calculator helps bridge that gap instantly.
How to use
- Enter your Celsius temperature in the input field
- View the Fahrenheit result instantly below
Common Celsius Temperatures:
- 0°C = 32°F (water freezes)
- 20°C = 68°F (comfortable room temperature)
- 37°C = 98.6°F (normal body temperature)
- 100°C = 212°F (water boils)
Examples
Example 1: Convert 25°C (warm day) to Fahrenheit
°F = (25 × 9/5) + 32 = 45 + 32 = 77°F
Example 2: Convert 0°C (freezing point) to Fahrenheit
°F = (0 × 9/5) + 32 = 0 + 32 = 32°F
Example 3: Convert -40°C to Fahrenheit
°F = (-40 × 9/5) + 32 = -72 + 32 = -40°F
(Fun fact: -40° is where both scales meet!)
How it works
Celsius to Fahrenheit Formula:
°F = (°C × 9/5) + 32
How it works:
- Multiply the Celsius temperature by 9/5 (or 1.8)
- Add 32 to the result
The multiplication by 9/5 converts the scale ratio since Celsius degrees are larger than Fahrenheit degrees. The addition of 32 accounts for the offset between the two scales (water freezes at 0°C but 32°F).
FAQ
What is the formula to convert Celsius to Fahrenheit?
Multiply the Celsius temperature by 9/5 (or 1.8), then add 32. The formula is: °F = (°C × 9/5) + 32. For example, 20°C = (20 × 1.8) + 32 = 68°F.
What is 25 degrees Celsius in Fahrenheit?
25°C equals 77°F. This is a pleasant warm temperature. The calculation: (25 × 9/5) + 32 = 45 + 32 = 77°F.
What is 0 degrees Celsius in Fahrenheit?
0°C equals 32°F. This is the freezing point of water. The calculation: (0 × 9/5) + 32 = 0 + 32 = 32°F.
Is there a quick way to estimate Celsius to Fahrenheit?
Yes! For a rough estimate: double the Celsius temperature and add 30. For example, 20°C: (20 × 2) + 30 = 70°F. The actual answer is 68°F, so it's close enough for everyday use.
At what temperature are Celsius and Fahrenheit equal?
Celsius and Fahrenheit are equal at -40 degrees. This is the only point where both scales intersect: -40°C = -40°F.