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Celsius to Fahrenheit Converter

Q: What is the formula to convert Celsius to Fahrenheit?

Multiply Celsius by 9/5 and add 32: F = C × 9/5 + 32. For example, 20°C = 68°F.

Q: What is 180 degrees Celsius in Fahrenheit?

180°C × 9/5 + 32 = 356°F. This is the standard baking oven temperature.

Q: Why do US recipes use Fahrenheit?

The US uses the Fahrenheit scale for everyday temperatures, including ovens. Most of the world uses Celsius. The scales differ in both unit size and zero point.

Convert Celsius to Fahrenheit instantly with a live calculator, an oven temperature chart, and the manual formula for baking and weather.

🌡️ Celsius to Fahrenheit Calculator

°Celsius

Result (°Fahrenheit)

180°C = 356°F (standard baking oven)

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Where Celsius Meets Fahrenheit

Temperature is the unit conversion that trips people up most, because it is not a simple multiplication. The two scales have different unit sizes and different zero points, which is why 0°C is 32°F, not 0°F. The most common real-world meeting point is the oven: European and Australian recipes give temperatures in Celsius, while American recipes use Fahrenheit. A European baking an American chocolate chip cookie has to convert every single temperature.

Weather is the other constant source. Someone moving from Europe to the US sees "68°F" on the forecast and has no instinct for what that feels like. The chart below includes the everyday weather range so you can build that instinct: 20°C is room temperature, 30°C is a hot summer day, and 37°C is body temperature.

°F = °C × 9/5 + 32

Common Mistakes to Avoid

Forgetting the +32. The offset is the most common error. 100°C × 9/5 = 180, but the answer is 212°F, not 180°F.
Multiplying by 1.8 and treating it as the whole conversion. 1.8 is only the scale ratio; you still must add 32.
Using the wrong formula for temperature differences. A rise of 10°C is a rise of 18°F (no +32). The +32 only applies to absolute temperatures.
Rounding the shortcut as exact. The "double and add 30" trick is for conversation only. For an oven, use the exact formula.

Worked Example by Hand

Convert 180°C to Fahrenheit (the classic baking temperature):

Multiply by 9: 180 × 9 = 1,620.
Divide by 5: 1,620 ÷ 5 = 324.
Add 32: 324 + 32 = 356.
So 180°C = 356°F, which is what most ovens call "moderate."

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Oven & Weather Reference Chart

°C	°F	Context	°C	°F	Context
0°C	32°F	Water freezes	150°C	302°F	Low oven
10°C	50°F	Cool day	160°C	320°F	Low oven
15°C	59°F	Mild day	170°C	338°F	Moderate-low
20°C	68°F	Room temp	180°C	356°F	Moderate (bake)
25°C	77°F	Warm day	190°C	374°F	Moderate-high
30°C	86°F	Hot day	200°C	392°F	High (roast)
35°C	95°F	Very hot	210°C	410°F	High
37°C	98.6°F	Body temp	220°C	428°F	Very high
40°C	104°F	Heatwave	230°C	446°F	Very high
100°C	212°F	Water boils	250°C	482°F	Extreme

Mental shortcut: double the Celsius and add 30. 20 × 2 + 30 = 70°F (real answer 68°F). Fine for weather, not for baking.

Frequently Asked Questions

What is the formula to convert Celsius to Fahrenheit?

Multiply Celsius by 9, divide by 5, then add 32: F = C × 9/5 + 32.

What is 180 degrees Celsius in Fahrenheit?

180 × 9/5 + 32 = 356°F. This is the standard temperature for baking cakes and cookies in most recipes.

Why do US recipes use Fahrenheit instead of Celsius?

Because the US kept the Fahrenheit scale for everyday temperatures. Since the scale and the zero point both differ, recipes from different countries cannot be converted by memory alone.

At what temperature are Celsius and Fahrenheit equal?

At -40°. -40°C = -40°F. It is the only temperature where the two scales read the same number.

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