Common Temperatures
About Temperature Conversion
Convert temperatures between Celsius, Fahrenheit, Kelvin, and Rankine scales. Essential for cooking, weather forecasting, scientific research, and international communication.
Frequently Asked Questions
How do I convert Celsius to Fahrenheit?
To convert Celsius to Fahrenheit, multiply by 9/5 (or 1.8) and add 32. The formula is: °F = (°C × 9/5) + 32. For example, 20°C = (20 × 1.8) + 32 = 68°F.
How do I convert Fahrenheit to Celsius?
To convert Fahrenheit to Celsius, subtract 32 and multiply by 5/9. The formula is: °C = (°F - 32) × 5/9. For example, 68°F = (68 - 32) × 5/9 = 20°C.
What is the Kelvin temperature scale?
Kelvin is the absolute temperature scale used in science, starting at absolute zero (-273.15°C). To convert Celsius to Kelvin, add 273.15. Water freezes at 273.15 K and boils at 373.15 K.
What temperature does water freeze and boil?
Water freezes at 0°C (32°F, 273.15 K) and boils at 100°C (212°F, 373.15 K) at standard atmospheric pressure (1 atmosphere or 101.325 kPa).
What is the Rankine temperature scale?
Rankine is an absolute temperature scale like Kelvin, but uses Fahrenheit-sized degrees. To convert Fahrenheit to Rankine, add 459.67. Absolute zero is 0°R, which equals -459.67°F.
What is normal human body temperature?
Normal human body temperature is approximately 98.6°F (37°C or 310.15 K). However, normal body temperature can range from 97°F to 99°F (36.1°C to 37.2°C) depending on the individual and time of day.