Celsius to Fahrenheit Converter

Convert celsius to fahrenheit instantly with our free online °C to °F converter. Enter any temperature in celsius and see the exact equivalent in fahrenheit immediately.

FROM10°CCelsius=TO32°FFahrenheit
celsius to fahrenheit showing 10 °C equals 32 °F
°C
°F
Quick Values

How to Use This Celsius to Fahrenheit Converter

  1. 1Enter the temperature in celsius (°C) in the input field above.
  2. 2The converter automatically calculates the exact temperature in fahrenheit (°F).
  3. 3Use the swap button to switch between celsius to fahrenheit and fahrenheit to celsius.
  4. 4Check the common temperatures table for everyday reference points.

Celsius to Fahrenheit Formula

To convert celsius to fahrenheit, multiply the temperature in celsius by 1.8 (or 9/5), then add 32. The formula is: °F = (°C × 9/5) + 32. This offset of 32 accounts for the different zero points of the two scales.

For example, to convert 25°C to fahrenheit: (25 × 9/5) + 32 = 45 + 32 = 77°F. To convert 0°C to fahrenheit: (0 × 9/5) + 32 = 32°F.

Relative Size Comparison1 °C1.00 °F°C°F00.25x0.5x0.75x1
Scale diagram showing the relative size of °C compared to °F for celsius to fahrenheit

Common Celsius to Fahrenheit Conversions

Celsius (°C)Fahrenheit (°F)
-4.00e+1-4.00e+1
-3.00e+1-2.20e+1
-2.00e+1-4.00e+0
-1.00e+114
0.00e+032
541
1050
1559
2068
2577
3086
3595
3798.6
40104
50122
60140
70158
80176
90194
100212

About Celsius and Fahrenheit

Celsius (also known as centigrade) is a temperature scale used in most countries worldwide and in all scientific contexts. It is based on the freezing point of water at 0°C and boiling point at 100°C under standard conditions. Fahrenheit is primarily used in the United States and a few other countries. It sets water's freezing point at 32°F and boiling point at 212°F. Converting between celsius and fahrenheit is essential for travelers, scientists, cooks following international recipes, medical professionals, and anyone interpreting weather forecasts from different countries. Our converter handles negative temperatures, body temperature, oven settings, and extreme weather values accurately.

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Frequently Asked Questions About Celsius to Fahrenheit

The formula is: °F = (°C × 9/5) + 32, or equivalently °F = (°C × 1.8) + 32. Multiply celsius by 1.8, then add 32.
0°C equals exactly 32°F. This is the freezing point of water and one of the defining points of both temperature scales.
100°C equals exactly 212°F. This is the boiling point of water at standard atmospheric pressure.
Celsius and fahrenheit are equal at -40°, meaning -40°C = -40°F. This is the only temperature where both scales show the same number.
Normal human body temperature is approximately 37°C or 98.6°F. Slight variations between 36.1°C (97°F) and 37.2°C (99°F) are considered normal.
Double the celsius value and add 30 for a rough estimate. For example, 20°C × 2 = 40, plus 30 = 70°F (actual is 68°F). This gets you within a few degrees.