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Convert temperatures between Celsius, Fahrenheit, Kelvin, and Rankine instantly. Perfect for cooking, science, weather, and everyday temperature conversions.
Convert between Celsius, Fahrenheit, Kelvin, and Rankine.
Real-time conversion as you type with high precision.
Common temperature points for quick reference.
See the mathematical formulas used for conversions.
Choose the temperature scale you're converting from (Celsius, Fahrenheit, Kelvin, or Rankine).
Input the temperature value you want to convert in the "From" field.
Choose the temperature scale you want to convert to from the "To" dropdown.
See the converted temperature instantly in the "To" field with high precision.
Celsius (°C): Most commonly used worldwide, water freezes at 0°C and boils at 100°C
Fahrenheit (°F): Primarily used in the United States, water freezes at 32°F and boils at 212°F
Kelvin (K): Scientific scale where 0K is absolute zero, water freezes at 273.15K
Rankine (°R): Absolute temperature scale used in engineering, 0°R = absolute zero
• Absolute Zero: -273.15°C, -459.67°F, 0K, 0°R
• Water Freezing: 0°C, 32°F, 273.15K, 491.67°R
• Water Boiling: 100°C, 212°F, 373.15K, 671.67°R
Celsius to Fahrenheit: °F = (°C × 9/5) + 32
Fahrenheit to Celsius: °C = (°F - 32) × 5/9
Celsius to Kelvin: K = °C + 273.15
Fahrenheit to Rankine: °R = °F + 459.67
Temperature conversion is essential for cooking, weather forecasting, scientific research, engineering, and international communication.
• Use quick presets for common temperatures
• Remember that -40°C = -40°F (the crossover point)
• Kelvin is always positive (no negative values)
• For cooking, Celsius and Fahrenheit are most common
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