How do I convert Celsius to Fahrenheit?

To convert Celsius to Fahrenheit, multiply by 9/5 (or 1.8) and add 32. For example: 20°C = (20 × 1.8) + 32 = 68°F.

What is Kelvin used for?

Kelvin is the SI base unit of temperature and is primarily used in scientific and engineering contexts. It starts at absolute zero, making it ideal for thermodynamic calculations.

Temperature Converter – Celsius, Fahrenheit, Kelvin

Temperature Converter

Convert temperature values between Celsius, Fahrenheit, Kelvin, and Rankine temperature scales.

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Complete List of Temperature Units for Conversion

1 Celsius [°C] = 274.150 Kelvin [K]

Celsius to Kelvin, Kelvin to Celsius

1 Fahrenheit [°F] = 255.928 Kelvin [K]

Fahrenheit to Kelvin, Kelvin to Fahrenheit

1 Rankine [°R] = 0.555556 Kelvin [K]

Rankine to Kelvin, Kelvin to Rankine

Understanding temperature scales

Temperature can be measured in several different scales. Celsius and Kelvin are part of the metric system, Fahrenheit is used primarily in the United States, and Rankine is used in some engineering applications. Each scale has a different zero point and degree size.

Key temperature reference points

Water freezes: 0°C = 32°F = 273.15 K
Water boils: 100°C = 212°F = 373.15 K
Absolute zero: -273.15°C = -459.67°F = 0 K
Room temperature: ~20°C = ~68°F = ~293 K

When to use each temperature scale

Celsius is used in most countries worldwide and is the standard in science. Fahrenheit is primarily used in the United States for weather and everyday temperature measurements. Kelvin is the SI base unit and is used in scientific and engineering calculations, particularly in thermodynamics. Rankine is occasionally used in engineering applications in countries that use Fahrenheit.

Frequently Asked Questions

How do I convert Celsius to Fahrenheit?: To convert Celsius to Fahrenheit, multiply by 9/5 (or 1.8) and add 32. For example: 20°C = (20 × 1.8) + 32 = 68°F.
What is Kelvin used for?: Kelvin is the SI base unit of temperature and is primarily used in scientific and engineering contexts. It starts at absolute zero, making it ideal for thermodynamic calculations.

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