calculator logo
Login Register
🌡️

Temperature Converter

Convert between Celsius (°C), Fahrenheit (°F), and Kelvin (K).

Result
— °F
Quick Conversion Table
Based on current input
Unit Value

Temperature Conversion Guide

Use this comprehensive Temperature Conversion Guide to understand how to accurately convert Celsius to Fahrenheit, Fahrenheit to Celsius, and Kelvin. Whether you’re checking the weather, cooking, doing a science experiment, or working on an engineering project, these easy-to-follow formulas and examples will help you convert temperatures instantly and accurately.

Core Temperature Conversion Formulas
  • K = °C + 273.15
  • °F = (°C × 9/5) + 32
  • °C = (°F − 32) × 5/9
  • °C = K − 273.15
  • °F = (K − 273.15) × 9/5 + 32
  • K = (°F − 32) × 5/9 + 273.15

Tip: The Kelvin scale starts at absolute zero — the lowest possible temperature. Celsius and Fahrenheit can have negative values, but Kelvin cannot.

Quick Conversion Examples
  • 0 °C → °F: (0 × 9/5) + 32 = 32 °F
  • 100 °C → °F: (100 × 9/5) + 32 = 212 °F
  • 25 °C → K: 25 + 273.15 = 298.15 K
  • 68 °F → °C: (68 − 32) × 5/9 = 20 °C
  • 300 K → °C: 300 − 273.15 = 26.85 °C

Quick Tip: For mental math, use this quick rule — °F ≈ °C × 2 + 30. It’s not exact but useful for rough temperature conversions on the go.

When to Use Celsius, Fahrenheit, or Kelvin
  • Celsius (°C): Used in most countries for daily weather, climate data, and cooking measurements (metric system).
  • Fahrenheit (°F): Common in the United States for weather forecasts, indoor heating, and recipes (imperial system).
  • Kelvin (K): The scientific temperature unit used in physics, chemistry, and engineering for absolute measurements.

Knowing which temperature scale to use helps ensure accuracy in calculations. Our Temperature Converter Tool instantly converts Celsius to Fahrenheit, Fahrenheit to Celsius, and Kelvin with precision — ideal for students, scientists, and anyone needing reliable results.

The QuickCalculatIt Temperature Conversion Calculator is designed to simplify all types of temperature conversions. Whether you’re learning physics, baking with Fahrenheit-based recipes, or converting Kelvin values for lab reports, this tool ensures fast, accurate, and effortless results.

Convert between Celsius, Fahrenheit, Kelvin, and more using our easy temperature calculator — trusted by students, teachers, engineers, and weather enthusiasts worldwide.

Temperature – Full History