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Temperature Converter: Celsius, Fahrenheit, Kelvin & More

Convert between Celsius, Fahrenheit, Kelvin, and other temperature units. Use the formulas, examples, and quick reference tables below for fast, accurate conversions.

How to Convert Celsius to Kelvin

To convert Celsius to Kelvin, add 273.15 to the Celsius value.

Celsius + 273.15 = Kelvin

Example: 25°C + 273.15 = 298.15 K

How to Convert Fahrenheit to Celsius

To convert Fahrenheit to Celsius, subtract 32 from the Fahrenheit value, then multiply by 5/9.

(Fahrenheit − 32) × 5/9 = Celsius

Example: (77°F − 32) × 5/9 = 25°C

How to Convert Celsius to Fahrenheit (Step by Step)

  1. Multiply the Celsius temperature by 9/5.
  2. Add 32 to the result.
  3. The answer is the temperature in Fahrenheit.
(25 × 9/5) + 32 = 77°F

Frequently Asked Questions

  • How do you convert Celsius to Kelvin? Add 273.15 to the Celsius value. For example, 25°C + 273.15 = 298.15 K.
  • What is the formula for Fahrenheit to Celsius? (°F − 32) × 5/9 = °C. For example, 77°F − 32 = 45, then 45 × 5/9 = 25°C.
  • How do you convert Celsius to Fahrenheit step by step? Multiply the Celsius temperature by 9/5 and add 32. For example, (25 × 9/5) + 32 = 77°F.
  • What are common temperature units? Celsius (°C), Fahrenheit (°F), and Kelvin (K) are commonly used for temperature measurement.
Temperature Conversion Guide - Complete Guide

What is Temperature?

Temperature conversion involves transforming measurements between different temperature scales including Celsius, Fahrenheit, Kelvin, Rankine, Réaumur, Delisle, and Newton scales.

Precision Levels

Standard Precision
Up to 6 decimal places for everyday use
High Precision
Up to 10 decimal places for precise calculations
Scientific Precision
Up to 15 decimal places for scientific research

Key Features

Real-time conversion
High-performance caching
Conversion history
Mobile responsive
Result