Temperature Converter - Celsius, Fahrenheit & Kelvin
Temperature Converter
Instantly convert any temperature between Celsius (°C), Fahrenheit (°F), and Kelvin (K) with Calcon's free Temperature Converter. All three conversions update in real time as you type - no button needed.
Temperature Conversion Formulas
Celsius to Others
°F = (°C × 9/5) + 32
K = °C + 273.15
Fahrenheit to Others
°C = (°F − 32) × 5/9
K = (°F − 32) × 5/9 + 273.15
Kelvin to Others
°C = K − 273.15
°F = (K − 273.15) × 9/5 + 32
Key Reference Points
Water freezes: 0°C = 32°F = 273.15 K
Water boils: 100°C = 212°F = 373.15 K
Body temp: 37°C = 98.6°F = 310.15 K
Absolute zero: −273.15°C = −459.67°F = 0 K
Frequently Asked Questions
How do you convert Celsius to Fahrenheit?
Use the formula: °F = (°C × 9/5) + 32
Example: 25°C = (25 × 1.8) + 32 = 45 + 32 = 77°F
How do you convert Fahrenheit to Celsius?
Use the formula: °C = (°F − 32) × 5/9
Example: 98.6°F = (98.6 − 32) × 5/9 = 66.6 × 0.556 = 37°C
What is 0 Kelvin in Celsius?
0 Kelvin is −273.15°C and −459.67°F. This is called absolute zero - the coldest theoretically possible temperature. Nothing can be colder than 0 K.
At what temperature are Celsius and Fahrenheit equal?
Celsius and Fahrenheit are equal at −40°. That is, −40°C = −40°F. You can verify this using the formula: −40 × 9/5 + 32 = −72 + 32 = −40°F.
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