Conversions

Celsius to Fahrenheit Calculator

Convert Celsius temperatures to Fahrenheit.

Free online toolWorks in your browserNo sign-up required

Celsius to Fahrenheit Calculator

Enable JavaScript to use the interactive calculator; the example and formula are described below.

Explore this topic

Pace, Speed & Unit Conversions

Running and walking pace, speed relationships and common everyday unit-conversion formulas.

Topic hub →

How to use this celsius to fahrenheit calculator

Enter the values requested above and select Calculate. Change any input to compare another scenario. The calculation runs locally in your browser and does not require an account.

Formula and method

Fahrenheit = Celsius × 9/5 + 32.

Example

20°C = 68°F.

What this calculator is useful for

Convert Celsius temperatures to Fahrenheit. The result is intended for quick estimates, checking arithmetic and comparing scenarios. When a result affects a contract, tax filing, medical decision, building-code requirement or other high-stakes situation, verify the result with the appropriate professional or authoritative source.

Celsius to Fahrenheit Calculator: a practical example

20 degrees Celsius is 68 degrees Fahrenheit: multiply 20 by 9/5, then add 32.

What the result means

The 32-degree offset is essential; temperature does not convert using scale alone.

Limits to consider

These readings describe the same temperature, not a temperature change; for changes, the offset is not applied.

Related tools: CM to Inches Calculator · Cups to mL Calculator

Frequently asked questions

What does the Celsius to Fahrenheit Calculator calculate?

Convert Celsius temperatures to Fahrenheit.

How does the Celsius to Fahrenheit Calculator work?

Fahrenheit = Celsius × 9/5 + 32.

Is the Celsius to Fahrenheit Calculator free to use?

Yes. ERICH Calculators is free to use and does not require an account.

Transparency

Method, assumptions & corrections

See how formulas, sources and limitations are handled across ERICH Calculators.