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Temperature Converter

Convert between Celsius, Fahrenheit and Kelvin - all three shown at once.

ScaleValue

Water freezes at 0°C / 32°F and boils at 100°C / 212°F at standard pressure.

Reference

Key Temperature Reference Points

Absolute Zero

0 K = −273.15°C = −459.67°F
The coldest possible temperature.

Water Freezing / Boiling

Freezes: 0°C / 32°F / 273.15 K
Boils: 100°C / 212°F / 373.15 K

Human Body Temperature

Normal: 37°C / 98.6°F / 310.15 K
Fever: above 38°C / 100.4°F

Use Cases

When to Convert Temperature

Weather Forecasts

Understand international weather forecasts that use Fahrenheit when you think in Celsius.

Cooking & Baking

Convert oven temperatures in foreign recipes between Celsius, Fahrenheit and Gas Mark.

Science & Engineering

Convert between Celsius and Kelvin for thermodynamics, chemistry and physics calculations.

Medical & Healthcare

Convert body temperature readings between °C and °F for international medical records.

Travel

Understand destination weather in the scale you are comfortable with before packing.

Industrial Processes

Convert operating temperatures for manufacturing, storage or material handling specs.

FAQ

Temperature Conversion Questions

Use the formula: °F = (°C × 9÷5) + 32. For example: 0°C = 32°F, 100°C = 212°F. A quick estimate: double the Celsius value and add 30.

37°C = 98.6°F - the normal human body temperature. A fever is generally considered above 38°C (100.4°F).

Kelvin is the SI base unit for thermodynamic temperature. Unlike Celsius and Fahrenheit, Kelvin starts at absolute zero (the lowest possible temperature) - making it ideal for scientific calculations where negative temperatures would be meaningless.

Celsius and Fahrenheit are equal at −40°. Setting °F = °C in the conversion formula: C = (C × 9/5) + 32 → −5C/4 = 32 → C = −40. Both scales read −40 at that unique crossover point.

Normal room temperature is typically 20–22°C (68–72°F). Air conditioning is usually set around 24°C (75°F) in India, and 21°C (70°F) in Western countries.