What is the formula to convert Celsius to Fahrenheit?

Multiply the Celsius temperature by 9/5 (or 1.8) and add 32: °F = (°C × 1.8) + 32.

What is Absolute Zero?

Absolute Zero (0 Kelvin, or -273.15°C / -459.67°F) is the theoretical lowest temperature where molecular motion stops.

Converters 100% Free & Privacy-First

Convert temperatures instantly between Celsius (°C), Fahrenheit (°F), and Kelvin (K) with reference benchmarks.

Temperature Converter Interactive Workspace

Client-side calculations and instant parameter controls are initializing. All processing occurs securely in your browser.

1 Type a temperature value into any of the three unit boxes (Celsius, Fahrenheit, or Kelvin).
2 The other two temperature scales synchronize instantaneously.
3 Click any common benchmark card (Water Freezing, Room Temp, Boiling) for instant pre-filled reference values.

°F = (°C × 9/5) + 32 | °C = (°F − 32) × 5/9 | K = °C + 273.15

Calculations are performed with IEEE floating point mathematical precision directly in your device memory.

Input: 25°C

Result: 77.0°F (298.15 K)

(25 × 9/5) + 32 = 77.0°F

Input: 0°C

Result: 32.0°F (273.15 K)

(0 × 9/5) + 32 = 32.0°F

Input: 37°C

Result: 98.6°F (310.15 K)

(37 × 9/5) + 32 = 98.6°F

What is the formula to convert Celsius to Fahrenheit?: Multiply the Celsius temperature by 9/5 (or 1.8) and add 32: °F = (°C × 1.8) + 32.
What is Absolute Zero?: Absolute Zero (0 Kelvin, or -273.15°C / -459.67°F) is the theoretical lowest temperature where molecular motion stops.

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