Temperature Converter - Celsius, Fahrenheit, Kelvin | Hexa

Why Temperature Conversion Matters

Temperature scales differ by region and field. Americans use Fahrenheit for weather; most of the world uses Celsius. Scientists use Kelvin for absolute temperature. A recipe might say "bake at 180°C"—that's 356°F. A weather forecast of 25°C is 77°F. Absolute zero is 0 K, or -273.15°C, or -459.67°F. Converting between scales is essential for cooking, travel, science, and engineering. Our converter handles Celsius, Fahrenheit, and Kelvin instantly. Enter any value, get the equivalent in other scales. See Temperature conversion on Wikipedia for the formulas.

The Three Main Temperature Scales

Celsius (°C): The metric standard. Water freezes at 0°C and boils at 100°C at standard pressure. Used in most countries for weather, cooking, and science.

Fahrenheit (°F): Used in the US and a few other countries. Water freezes at 32°F and boils at 212°F. Common for weather and cooking in American contexts.

Kelvin (K): The scientific standard. Starts at absolute zero (no negative values). 0 K = -273.15°C. Used in physics, chemistry, and engineering. Room temperature is about 298 K.

Conversion Formulas

• Celsius to Fahrenheit: F = C × 9/5 + 32. Example: 20°C = 68°F.
• Fahrenheit to Celsius: C = (F − 32) × 5/9. Example: 86°F = 30°C.
• Celsius to Kelvin: K = C + 273.15. Example: 25°C = 298.15 K.
• Kelvin to Celsius: C = K − 273.15.

Our converter applies these formulas for exact results. No rounding errors.

Common Conversion Scenarios

Travel: "It's 30°C in Barcelona—how hot is that?" 30°C = 86°F. Pack accordingly.

Cooking: Recipes from UK or EU use Celsius. Convert to Fahrenheit if your oven uses °F.

Science: Lab data in Kelvin. Convert to Celsius or Fahrenheit for reports or presentations.

Weather: International weather apps may use Celsius. Convert to Fahrenheit for familiarity.

Privacy and Performance

All conversions run locally. We don't store your inputs. The tool works offline. Instant results, no signup.

Open the temperature converter below. Enter a value in Celsius, Fahrenheit, or Kelvin. Get the equivalent in other scales. No signup required.