Celsius to Fahrenheit Converter
350°F = 177°C
Reference Table
Temperature Scale
Context & Usage
This conversion is essential when following a recipe written in Celsius on a US oven that only displays Fahrenheit.
Fan (convection) ovens often run about 20°C hotter than a Celsius recipe assumes for a conventional oven — check your recipe's oven type.
The reverse mental shortcut — double the Celsius figure and add 30 — is common in casual use, though it becomes less accurate at temperature extremes, making the precise formula worth using for anything baked or candy-related.
A Worked Example
Say your US oven is set to 375°F and you want to know the Celsius equivalent for a recipe note. Subtract 32 to get 343, then multiply by 5/9 to get about 190.5°C — close enough to round to the common 190°C setting used in many European baking recipes.
Standards and Sources
The Celsius scale is the standard temperature unit under the SI system used by nearly every country except the United States for everyday and scientific measurement.
NIST's official conversion tables confirm the precise formula (°F = (°C × 9/5) + 32) this tool uses, rather than a rounded shortcut that can introduce small errors at extreme temperatures.
Convection or fan ovens, increasingly common internationally, are frequently calibrated with their own Celsius guidance separate from conventional oven temperatures, which recipe writers account for by listing both settings.
Where This Shows Up
US bakers following a European or Australian recipe rely on this conversion constantly, since those regions publish almost exclusively in Celsius.
Appliance repair technicians and oven calibration services reference this exact formula when verifying a US oven's Celsius-labeled settings against its Fahrenheit display.
Common Mistakes
- Using a rounded shortcut like 'double and add 30' instead of the precise formula, which can be off by several degrees at higher temperatures.
- Forgetting that some European recipes assume a fan oven by default, requiring a downward adjustment when using a conventional US oven instead.
- Confusing Celsius with Kelvin, a related but distinct scientific temperature scale that doesn't share the same zero point.
Conventional vs Fan (Convection) Oven Settings
| Conventional Oven | Fan/Convection Oven | |
|---|---|---|
| Typical adjustment | Recipe temperature as written | Reduce by about 20°C (25°F) |
| Airflow | Static | Circulated by fan |
| Common in | US home ovens | European ovens, some US models |
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Frequently Asked Questions
What is 180°C in Fahrenheit?+
180°C is 356°F, often rounded to 350°F on US ovens.
What is the formula for Celsius to Fahrenheit?+
Multiply by 9/5, then add 32: °F = (°C × 9/5) + 32.
Does a fan oven need a different Celsius setting?+
Yes, fan ovens typically run about 20°C hotter than the recipe's stated temperature — many recipes list both settings.
Why do some countries use Celsius for cooking but Fahrenheit for weather?+
It's largely historical — the US retained Fahrenheit for everyday use across contexts, while most other English-speaking countries transitioned fully to Celsius decades ago.
Is oven accuracy affected by which scale it displays?+
No, display unit is just a labeling choice — the oven's actual heating accuracy is a separate mechanical or electronic issue unrelated to Fahrenheit versus Celsius.