Convert temperatures from Celsius (°C) to Fahrenheit (°F) and Kelvin (K) with our free online calculator. Perfect for converting room temperature (20°C to 68°F), body temperature (37°C to 98.6°F), boiling point (100°C to 212°F), and freezing point (0°C to 32°F). Ideal for cooking temperatures, weather conversion, scientific calculations, and everyday use. Get instant, accurate conversions with detailed explanations of common reference points.
To convert Celsius to Fahrenheit, multiply by 9/5 and add 32. For example, 20°C = (20 × 9/5) + 32 = 68°F. Our converter handles this automatically with high precision.
To convert Celsius to Kelvin, add 273.15. For example, 0°C = 273.15K. Water freezes at 0°C (273.15K) and boils at 100°C (373.15K).
Common reference points in Celsius: Water freezes at 0°C, room temperature is ~20°C, body temperature is 37°C, and water boils at 100°C.
Most countries worldwide use Celsius for everyday temperature measurements. Only the United States commonly uses Fahrenheit for daily life.
Celsius is part of the metric system and is used scientifically worldwide. It's based on water's freezing (0°C) and boiling points (100°C), making it intuitive for many applications.