Celsius to Fahrenheit Converter
Convert between Celsius, Fahrenheit, and Kelvin temperature units
Input Temperature
Enter a temperature and select units to convert
Quick Conversions
Common Temperatures
Conversion Result
All Conversions
25 °C equals:
Weather Temperatures
Click to convert common weather temps
Cooking Temperatures
Common oven temperatures
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About Temperature Conversion
Understanding Temperature Scales
This converter helps you convert between the three main temperature scales: Celsius (°C), Fahrenheit (°F), and Kelvin (K). Each scale has different reference points and is used in different contexts around the world.
Temperature Scales
- Celsius (°C): Used worldwide, water freezes at 0°C and boils at 100°C
- Fahrenheit (°F): Used in the US, water freezes at 32°F and boils at 212°F
- Kelvin (K): Scientific scale, absolute zero is 0K, no negative values
Conversion Formulas
Key Reference Points
Common Use Cases
- Weather forecasts and climate data
- Cooking and baking temperatures
- Medical and body temperature readings
- Scientific research and experiments
- HVAC and thermostat settings
- International travel and communication
- Industrial and manufacturing processes
Quick Mental Conversions
- To estimate °F from °C: Double it and add 30 (rough approximation)
- To estimate °C from °F: Subtract 30 and divide by 2 (rough approximation)
- Exact conversion: Use the formulas above for precision
- -40°C = -40°F (the only point where both scales are equal)
Temperature Ranges
Why Different Scales?
Celsius was designed around water's properties (0°C freeze, 100°C boil), making it intuitive for everyday use. Fahrenheit was created to have finer gradations for weather (0°F was the coldest temperature achievable with salt-ice mixture). Kelvin is the absolute temperature scale used in science, starting at absolute zero where all molecular motion stops.