Temperature Converter
Convert Celsius, Fahrenheit, Kelvin, Rankine, Réaumur, Delisle, Newton & More
Free online temperature converter for all common units. Instantly convert between Celsius, Fahrenheit, Kelvin, Rankine, Réaumur, Delisle, Newton, and more.
What is a Temperature Converter?
A temperature converter is a tool that allows you to quickly and accurately convert between different temperature scales, such as Celsius, Fahrenheit, Kelvin, Rankine, Réaumur, Delisle, and Newton. This is essential for science, cooking, engineering, weather, and everyday life when working with different measurement systems.
Supported Temperature Units
- Celsius (°C): The metric unit for temperature. Water freezes at 0°C and boils at 100°C.
- Fahrenheit (°F): Used mainly in the US. Water freezes at 32°F and boils at 212°F.
- Kelvin (K): The SI unit for absolute temperature. 0 K is absolute zero.
- Rankine (°R): Absolute temperature scale used in some US engineering fields. 0°R is absolute zero.
- Réaumur (°Re): Used in some parts of Europe historically. Water freezes at 0°Re and boils at 80°Re.
- Delisle (°De): Historical scale. Water boils at 0°De and freezes at 150°De.
- Newton (°N): Historical scale. Water freezes at 0°N and boils at 33°N.
Real Life Temperature Examples
- Room temperature: ≈ 20–22°C (68–72°F, 293–295 K)
- Body temperature (normal): ≈ 37°C (98.6°F, 310.15 K)
- Freezing point of water: 0°C (32°F, 273.15 K)
- Boiling point of water: 100°C (212°F, 373.15 K)
- Absolute zero: -273.15°C (-459.67°F, 0 K)
- Hottest recorded temperature on Earth: 56.7°C (134°F, 329.85 K)
- Coldest recorded temperature on Earth: -89.2°C (-128.6°F, 183.95 K)
How to Use the Temperature Converter
- Enter the value you want to convert.
- Select the unit you are converting from.
- View instant conversions to all other supported units below.
Why Use ManyCalcs Temperature Converter?
- Completely free and ad-free.
- Supports all major temperature scales.
- Instant, accurate, and easy-to-use interface.
- Mobile-friendly and accessible on any device.
- Educational content for every unit.
Frequently Asked Questions
- How do I convert Celsius to Fahrenheit?
- Enter the value in Celsius, select "Celsius (°C)", and view the result in Fahrenheit in the output list.
- What is absolute zero?
- Absolute zero is the lowest possible temperature, 0 K or -273.15°C, where all molecular motion stops.
- What is the difference between Kelvin and Celsius?
- Kelvin is an absolute scale starting at absolute zero. 0°C = 273.15 K.
- Is this temperature converter free?
- Yes, the ManyCalcs temperature converter is 100% free and always will be.
For more information, see Conversion of units of temperature on Wikipedia.