🌡️ Temperature Converter

How to Convert Between Celsius, Fahrenheit, and Kelvin

There are three temperature scales in common use. Celsius (°C) is the standard for everyday use in most countries, including . Fahrenheit (°F) is used primarily in the United States. Kelvin (K) is the scientific absolute scale, used in physics and chemistry — particularly in thermodynamics and astronomy.

To convert Celsius to Fahrenheit: multiply by 9/5 (or 1.8), then add 32. So 100°C = (100 × 1.8) + 32 = 212°F. To convert Fahrenheit to Celsius: subtract 32, then multiply by 5/9. So 98.6°F = (98.6 − 32) × 5/9 = 37°C. To convert Celsius to Kelvin: add 273.15. Absolute zero — the coldest theoretically possible temperature — is 0 K, which is −273.15°C.

Cooking is a common reason for these conversions. American recipes often specify oven temperatures in Fahrenheit, while and European ovens display Celsius. A recipe calling for 350°F translates to approximately 177°C (usually rounded to 180°C in practice). 400°F is approximately 200°C. If your oven only shows Celsius, this converter ensures you're baking at the correct temperature.

Weather understanding is another use. When travelling to or communicating with people in the US, temperature in Fahrenheit can be disorienting. A 95°F day is 35°C — extremely hot. A 32°F day is 0°C — freezing. The crossover point where Fahrenheit and Celsius are equal is −40° (both scales read −40 at that point).

Body temperature matters in medicine. Normal human body temperature is 37°C / 98.6°F. A fever begins at approximately 38°C / 100.4°F. Hypothermia is defined as a core body temperature below 35°C / 95°F. These thresholds are the same regardless of which scale you use — this converter lets you read any thermometer accurately.