How to Use the Temperature Converter

Enter the temperature value you want to convert

Select the unit you are converting FROM — Celsius, Fahrenheit, or Kelvin

Click Convert Temperature to see all three units instantly

Use Quick References to load common temperatures with one click

About This Temperature Converter

Our free temperature converter lets you convert between Celsius, Fahrenheit, and Kelvin instantly. Whether you're cooking, checking weather forecasts, studying science, or working with international measurements — this tool handles all three scales simultaneously.

The Celsius scale (°C) is used in most countries including India for everyday temperature. Fahrenheit (°F) is primarily used in the United States. Kelvin (K) is the SI base unit for thermodynamic temperature, commonly used in physics and chemistry. Zero Kelvin (absolute zero) is the lowest possible temperature — equivalent to −273.15°C.

Frequently Asked Questions

°F = (°C × 9/5) + 32. For example, 100°C = (100 × 9/5) + 32 = 180 + 32 = 212°F.

−40° is the same in both Celsius and Fahrenheit. This is the unique point where the two scales intersect.

Absolute zero is 0 K = −273.15°C = −459.67°F. It is the lowest possible temperature where all molecular motion stops.

Normal human body temperature is approximately 37°C or 98.6°F. A temperature above 38°C (100.4°F) is generally considered a fever.