Temperature
Convert between Celsius, Fahrenheit and Kelvin. Standard scales for science, meteorology and cooking.
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Temperature
Comprovante de Conversão
De
Celsius (°C)
Para
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Fahrenheit (°F)
Os resultados são baseados em tabelas de equivalência padrão e podem variar.
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Understand the concept
Temperature measures how hot or cold something is and relates to the thermal energy of the system. In practice, you find different scales depending on the country and context.
Celsius (°C) is common in Brazil and most of the world; Fahrenheit (°F) is common in the US; Kelvin (K) is used in science and engineering because it is an absolute scale.
Practical example: 25°C is equivalent to 77°F. And 0°C is equivalent to 32°F. For Kelvin, just add 273.15: 25°C ≈ 298.15 K.
Common mistakes include confusing °C with K (Kelvin doesn't use “degree”), forgetting the offset between °C and °F, and rounding before finishing the conversion.
Use this converter to avoid confusion in recipes, weather, labs and technical specifications.
How to use this tool
- Select the source unit (°C, °F or K).
- Select the destination drive.
- Enter the value and read the automatic conversion.
- In science, avoid rounding early and maintain precision when necessary.
FAQ
What is the difference between °C and K?
Kelvin is an absolute scale; 0 K is absolute zero. Celsius is relative to the freezing/boiling point of water.
Why does °F seem “off”?
Because the scale has another zero and another ratio; conversion involves multiplication and addition.
Can I convert oven temperature?
Yes, and this helps a lot in international recipes.
What is a common mistake?
Confusing 200°C with 200°F (huge difference).
Does Kelvin use a degree symbol?
No. Use “K”, without °.
Technical notes
Base técnica
Formula: °F = (°C × 9/5) + 32; °C = (°F − 32) × 5/9; K = °C + 273.15. Unit & scope: we convert temperature between the provided scales (°C, °F and K) using offset transforms (not a simple proportion).
Referência
NIST (temperature conversions) and SI definitions (BIPM).