Convert Celsius to Fahrenheit
Instantly convert Celsius (°C) to Fahrenheit (°F) with our free online calculator.
Formula: °C to °F — (°C × 9/5) + 32
Reference Table
| Celsius (°C) | Fahrenheit (°F) |
|---|---|
| 1 | 33.8 |
| 5 | 41 |
| 10 | 50 |
| 25 | 77 |
| 50 | 122 |
| 100 | 212 |
Celsius-to-fahrenheit conversion is performed daily by US residents reading international weather forecasts, science news, recipe cooking temperatures, and medical records. The formula °F = °C × 9/5 + 32 reflects the two scales' different zero points (Celsius anchored at water's freezing, Fahrenheit at an obsolete brine). A pleasant 20°C spring day is 68°F; a hot 35°C summer day is 95°F; a 40°C fever reading is 104°F. Cooking temperatures converted the other way — a 200°C oven is 392°F — matter when following international baking recipes.
How to Convert Celsius to Fahrenheit
Formula
To convert Celsius (°C) to Fahrenheit (°F): (°C × 9/5) + 32
Step-by-Step
- Start with your value in Celsius (°C).
- (°C × 9/5) + 32 to perform the conversion.
- The result is your value expressed in Fahrenheit (°F).
Conversion Factor
1 °C = 33.8 °F
Reverse Factor
1 °F = -17.2222 °C
Worked Example
Convert 25 Celsius to Fahrenheit: 25 °C = 77 °F
About Celsius (°C)
A temperature scale on which water freezes at 0° and boils at 100° under standard atmospheric pressure, devised by Swedish astronomer Anders Celsius in 1742. Celsius is the global standard for weather forecasts, cooking, human body temperature (normal ~37°C), and most scientific measurement outside the US. Because its degree interval is identical to the kelvin, Celsius is the everyday face of SI temperature: scientists and laypeople alike use it without any conversion penalty.
About Fahrenheit (°F)
A temperature scale introduced by physicist Daniel Gabriel Fahrenheit in 1724, on which water freezes at 32° and boils at 212° under standard atmospheric pressure. Fahrenheit remains the dominant temperature scale in the United States for weather reporting, oven and cooking temperatures, and HVAC settings. The smaller degree interval (5°F ≈ 2.78°C) gives more precision in everyday conversation about weather — partly why American forecasters and thermostats still prefer it despite global metric adoption.
Quick Facts
- 1 Celsius equals 33.8 Fahrenheit
- 1 Fahrenheit equals -17.2222 Celsius
- Celsius is a unit of temperature
- Fahrenheit is a unit of temperature
- This conversion is commonly used in weather forecasting, cooking, scientific experiments, and HVAC
- The Celsius belongs to the metric system
- The Fahrenheit belongs to the imperial system
Common Celsius to Fahrenheit Conversions
| Celsius (°C) | Fahrenheit (°F) |
|---|---|
| -40 | -40 |
| -20 | -4 |
| -10 | 14 |
| 0 | 32 |
| 5 | 41 |
| 10 | 50 |
| 15 | 59 |
| 20 | 68 |
| 25 | 77 |
| 30 | 86 |
| 35 | 95 |
| 37 | 98.6 |
| 40 | 104 |
| 50 | 122 |
| 60 | 140 |
| 70 | 158 |
| 80 | 176 |
| 90 | 194 |
| 100 | 212 |
| 150 | 302 |
| 200 | 392 |
Understanding Celsius
The Celsius (symbol: °C) is a unit of temperature. A temperature scale on which water freezes at 0° and boils at 100° under standard atmospheric pressure, devised by Swedish astronomer Anders Celsius in 1742. Celsius is the global standard for weather forecasts, cooking, human body temperature (normal ~37°C), and most scientific measurement outside the US. Because its degree interval is identical to the kelvin, Celsius is the everyday face of SI temperature: scientists and laypeople alike use it without any conversion penalty.
It belongs to the metric measurement system.
Celsius are commonly used in weather forecasting, cooking, scientific experiments, and HVAC.
Understanding Fahrenheit
The Fahrenheit (symbol: °F) is a unit of temperature. A temperature scale introduced by physicist Daniel Gabriel Fahrenheit in 1724, on which water freezes at 32° and boils at 212° under standard atmospheric pressure. Fahrenheit remains the dominant temperature scale in the United States for weather reporting, oven and cooking temperatures, and HVAC settings. The smaller degree interval (5°F ≈ 2.78°C) gives more precision in everyday conversation about weather — partly why American forecasters and thermostats still prefer it despite global metric adoption.
It belongs to the imperial measurement system.
Fahrenheit are commonly used in weather forecasting, cooking, scientific experiments, and HVAC.
Why Convert Celsius to Fahrenheit?
Converting between Celsius and Fahrenheit is essential for a variety of everyday and professional tasks. International recipes list oven temperatures in different scales, weather reports from other countries use unfamiliar units, and scientists must reconcile data recorded under different conventions. Medical professionals also compare body temperature readings that may be reported in different units depending on the country or device.
Frequently Asked Questions
How do I convert Celsius to Fahrenheit?
A temperature scale on which water freezes at 0° and boils at 100° under standard atmospheric pressure, devised by Swedish astronomer Anders Celsius in 1742. To convert Celsius to Fahrenheit, (°C × 9/5) + 32. For example, 25 °C equals 77 °F.
How many Fahrenheit are in 1 Celsius?
There are 33.8 Fahrenheit in 1 Celsius.
How many Celsius are in 1 Fahrenheit?
There are -17.2222 Celsius in 1 Fahrenheit.
What is the formula for Celsius to Fahrenheit conversion?
The formula is: (°C × 9/5) + 32. This means 1 °C = 33.8 °F.
Is a Celsius bigger than a Fahrenheit?
No. One Celsius is smaller than one Fahrenheit because 1 °C equals 33.8 °F, which is greater than 1.
When do you need to convert between Celsius and Fahrenheit?
A temperature scale introduced by physicist Daniel Gabriel Fahrenheit in 1724, on which water freezes at 32° and boils at 212° under standard atmospheric pressure. Celsius and Fahrenheit are both temperature units, so conversion comes up whenever one source of information uses one unit and another uses the other — a classic cross-reference challenge in engineering, trade, travel, and everyday life.