Temperature Converter
Free Temperature Converter, Convert Celsius, Fahrenheit & Kelvin with Formulas
Convert temperatures between Celsius, Fahrenheit, and Kelvin instantly with OmniConverter's free temperature converter. The formula is straightforward: °F = (°C × 9/5) + 32. Water freezes at 0°C (32°F) and boils at 100°C (212°F). Whether you're checking the weather, following a recipe, or interpreting scientific data, our tool converts any temperature accurately in real time.
How It Works
Convert in three simple steps.
Enter the Temperature Value
Type the temperature you want to convert into the Input Value field. Negative values are supported, for example, -40 or 98.6.
Choose Your Temperature Scales
Select your source temperature scale from the left dropdown (e.g., Fahrenheit, Celsius, Kelvin) and your target scale on the right (e.g., Celsius, Fahrenheit).
Get Your Converted Temperature
Your converted temperature is calculated instantly using the correct formula for each scale. Ideal for weather, science experiments, cooking, or medical contexts where Celsius and Fahrenheit conversions are needed.
Popular Temperature Conversions
Common Benchmarks
Reference
1 °C → °C
1 °C
Reference
1 °C → °F
33.8 °F
Reference
1 °C → K
274.15 K
Real-World Use Cases
Temperature conversion is needed for cooking and baking (US recipes use Fahrenheit, most others use Celsius), checking international weather forecasts, understanding medical temperature readings (US uses °F, most of the world uses °C), scientific and laboratory work (which uses Kelvin), HVAC and climate control engineering, and chemistry (reactions and material properties are often defined in Celsius or Kelvin).
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Get Embed CodeFrequently asked questions
Quick answers to common conversion questions
How do I use the dual Fahrenheit to Celsius + Celsius to Fahrenheit chart 0-100?+
Find °F in the left column for °C, or °C on the left for °F. Example: 32°F=0°C, 68°F=20°C, 212°F=100°C and reverse 0°C=32°F, 20°C=68°F, 100°C=212°F. Table shows 0-100 in 10° steps.
What is the exact formula for Fahrenheit to Celsius?+
°C = (°F-32)×5/9 exactly. Example: 68°F = (68-32)×5/9 = 20°C. Use the Formula & Table below.
What is the exact formula for Celsius to Fahrenheit?+
°F = °C×9/5+32 exactly. Example: 20°C ×9/5+32 = 68°F. Table 0-100°C below.
How do I convert Celsius to Fahrenheit?+
Use the formula °F = (°C × 9/5) + 32. For example, 25°C = 77°F.
What is 0°C in Fahrenheit?+
0 degrees Celsius equals 32 degrees Fahrenheit, the freezing point of water.
How do I convert Fahrenheit to Celsius?+
Use the formula °C = (°F − 32) × 5/9. For example, 98.6°F ≈ 37°C.
How do I convert Kelvin to Celsius?+
Subtract 273.15 from the Kelvin value to get Celsius.
What is absolute zero?+
Absolute zero is 0 K, which is equal to -273.15°C.
Why are temperature scales different?+
Each scale sets its zero point and unit size differently, which is why the formulas are not linear in an identical way.
Can I convert 100°C to Fahrenheit?+
Yes. 100°C equals 212°F, the boiling point of water at standard atmospheric pressure.
How do I read Kelvin temperature?+
Kelvin starts at absolute zero, so it is common in scientific and engineering contexts.
Does the converter handle negative temperatures?+
Yes, negative values are supported for Celsius and Fahrenheit.
Are temperature conversions exact?+
They follow well-defined formulas, though displayed results may be rounded to a few decimals.
