📋 Common Temperatures
Water Freezes0°C = 32°F
Water Boils100°C = 212°F
Body Temp37°C = 98.6°F
Room Temp20°C = 68°F
Absolute Zero-273.15°C = 0K
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Celsius (°C) is based on water: 0° is freezing, 100° is boiling. Fahrenheit (°F) uses a different scale where water freezes at 32° and boils at 212°. Most countries use Celsius; the US primarily uses Fahrenheit for everyday temperatures.
Kelvin (K) is the SI unit for temperature used in science. It starts at absolute zero (-273.15°C or -459.67°F) where all molecular motion theoretically stops. Scientists use Kelvin because it has no negative values and is directly proportional to thermal energy.
The US adopted Fahrenheit before Celsius became the international standard. While most countries switched to metric/Celsius, the US kept Fahrenheit for everyday use (weather, cooking, body temperature) due to established infrastructure and familiarity.
Multiply the Celsius temperature by 9/5 (or 1.8), then add 32. Formula: °F = (°C × 9/5) + 32. Example: 20°C = (20 × 1.8) + 32 = 68°F
Subtract 32 from the Fahrenheit temperature, then multiply by 5/9. Formula: °C = (°F - 32) × 5/9. Example: 68°F = (68 - 32) × 5/9 = 20°C
From Celsius: K = °C + 273.15. From Fahrenheit: first convert to Celsius, then add 273.15. Example: 25°C = 298.15K
0°C equals 32°F. This is the freezing point of water at standard atmospheric pressure - an important reference point for both temperature scales.
Normal human body temperature is approximately 37°C or 98.6°F. However, normal can range from 36.1°C to 37.2°C (97°F to 99°F) depending on the person, time of day, and measurement location.
Room temperature is typically defined as 20-22°C (68-72°F). This comfortable range is used as a standard reference in science, cooking, and everyday life.
Celsius and Fahrenheit are equal at -40°. This is the only point where both scales intersect: -40°C = -40°F.
Simply type a value in any field (Celsius, Fahrenheit, or Kelvin) and the other two fields update automatically. The conversion happens instantly as you type.
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350°F equals approximately 177°C. This is a common oven temperature for baking. Use our converter for precise calculations.
38°C equals 100.4°F. This is slightly above normal body temperature and may indicate a low-grade fever.
45°C equals 113°F. This is extremely hot - about the temperature of a very hot summer day in desert regions. It's dangerous for prolonged human exposure.
1°F equals approximately -17.22°C. However, a 1-degree change in Fahrenheit equals a 0.556°C change in Celsius (multiply by 5/9).
Celsius is more intuitive for scientific use (water freezes at 0°, boils at 100°). Fahrenheit offers more precision for weather (its 180-degree range between freezing and boiling vs. 100° in Celsius). Most of the world uses Celsius; the US primarily uses Fahrenheit.