Science, Tech, Math › Science Temperature Conversion Formulas Celsius, Kelvin, and Fahrenheit Temperature Conversions Share Flipboard Email Print All degrees are not created equal! It's important to be able to convert between temperatures scales. Steven Taylor / Getty Images Science Chemistry Basics Chemical Laws Molecules Periodic Table Projects & Experiments Scientific Method Biochemistry Physical Chemistry Medical Chemistry Chemistry In Everyday Life Famous Chemists Activities for Kids Abbreviations & Acronyms Biology Physics Geology Astronomy Weather & Climate by Anne Marie Helmenstine, Ph.D. Dr. Helmenstine holds a Ph.D. in biomedical sciences and is a science writer, educator, and consultant. She has taught science courses at the high school, college, and graduate levels. Updated November 04, 2019 The three common temperature scales are Celsius, Fahrenheit, and Kelvin. Each scale has its uses, so it's likely you'll encounter them and need to convert between them. Fortunately, the conversion formulas are simple: Celsius to Fahrenheit ° F = 9/5 ( ° C) + 32 Kelvin to Fahrenheit ° F = 9/5 (K - 273) + 32 Fahrenheit to Celsius ° C = 5/9 (° F - 32) Celsius to Kelvin K = ° C + 273 Kelvin to Celsius ° C = K - 273 Fahrenheit to Kelvin K = 5/9 (° F - 32) + 273 Useful Temperature Facts Celsius and Fahrenheit are the same at -40°.Water boils at 100°C or 212°F.Water freezes at 0°C and 32°F.Absolute zero is 0 K.Celsius and Fahrenheit are degree scales. The degree symbol is not used to report temperature using the Kelvin scale. Continue Reading How to Convert Between Fahrenheit and Celsius See an Example of Converting Fahrenheit to Kelvin How to Convert Between Degrees Fahrenheit and Celsius How to Convert Celsius and Fahrenheit How to Convert Celsius to Fahrenheit (First Learn to Spell It) Learn the Temperature Where Fahrenheit and Celsius Are the Same How to Convert Fahrenheit to Celsius Worked Celsius To Fahrenheit Conversion Problems What Is the Kelvin Temperature Scale? How to Convert Fahrenheit to Celcius Convert Temperatures From Kelvin to Celsius Understand What Temperature Means in Science How to Convert Fahrenheit to Kelvin Practice Chemistry with Worked Chemistry Problems Here's How to Convert Temperatures from Celsius to Kelvin Who Gets Credit for Inventing the Thermometer?