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Scientific & Everyday Physics

Temperature Converter

Convert temperatures instantly between Celsius (°C), Fahrenheit (°F), Kelvin (K), and Rankine (°R) with live conversion formulas.

Input Temperature
Enter value and choose input scale
Celsius°C

25°C

Water Freezes: 0°C
Fahrenheit°F

77°F

Water Freezes: 32°F
KelvinK

298.15 K

Abs Zero: 0 K
Rankine°R

536.67°R

Abs Zero: 0°R
Conversion Formulas

• Celsius to Fahrenheit: °F = (°C × 9/5) + 32

• Fahrenheit to Celsius: °C = (°F − 32) × 5/9

• Celsius to Kelvin: K = °C + 273.15

• Kelvin to Celsius: °C = K − 273.15

Documentation

About Temperature Converter Free — Celsius, Fahrenheit, Kelvin & Rankine

Convert temperatures seamlessly for cooking, weather forecasting, scientific studies, or engineering.

Key Features & Capabilities

  • Simultaneous conversion across all 4 temperature scales
  • Supports Celsius, Fahrenheit, Kelvin, and Rankine
  • Live conversion formulas
  • One-click copy for temperature results
  • Instant real-time calculation

How to Convert Temperatures

01

Enter Value

02

Select Input Unit

03

View Converted Values

Frequently Asked Questions

What temperature is equal in Celsius and Fahrenheit?

-40°C is equal to -40°F.

What is Absolute Zero?

Absolute Zero is 0 Kelvin (-273.15°C or -459.67°F).

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