Temperature Converter
Convert between Celsius, Fahrenheit, and Kelvin temperature scales instantly. Real-time conversion as you type with adjustable precision and common reference points. 100% free and private.
Conversion Formulas
From Celsius (°C)
(°C × 9/5) + 32°C + 273.15From Fahrenheit (°F)
(°F - 32) × 5/9(°F - 32) × 5/9 + 273.15From Kelvin (K)
K - 273.15(K - 273.15) × 9/5 + 32Temperature Reference Points
| Reference Point | Celsius | Fahrenheit | Kelvin |
|---|---|---|---|
Absolute Zero The lowest possible temperature | -273.15°C | -459.67°F | 0K |
Water Freezing Water freezes at standard pressure | 0°C | 32°F | 273.15K |
Room Temperature Comfortable indoor temperature | 20°C | 68°F | 293.15K |
Body Temperature Normal human body temperature | 37°C | 98.6°F | 310.15K |
Water Boiling Water boils at standard pressure | 100°C | 212°F | 373.15K |
Real-Time Conversion
Instant conversion as you type in any temperature field.
Precision Control
Adjust decimal precision from 0 to 4 decimal places.
100% Private
All conversions happen in your browser. Your data never leaves your device.
Frequently Asked Questions
How do I convert Celsius to Fahrenheit?
To convert Celsius to Fahrenheit, multiply the temperature by 9/5 (or 1.8) and then add 32. The formula is: °F = (°C × 9/5) + 32. For example, 20°C equals (20 × 9/5) + 32 = 68°F. Our calculator does this instantly as you type.
How do I convert Fahrenheit to Celsius?
To convert Fahrenheit to Celsius, subtract 32 from the temperature and then multiply by 5/9. The formula is: °C = (°F - 32) × 5/9. For example, 68°F equals (68 - 32) × 5/9 = 20°C.
What is the Kelvin scale?
Kelvin is an absolute temperature scale used primarily in scientific applications. It starts at absolute zero (0K), the lowest possible temperature. To convert Celsius to Kelvin, add 273.15. Unlike Celsius and Fahrenheit, Kelvin does not use degree symbols.
What temperature is absolute zero?
Absolute zero is -273.15°C, -459.67°F, or 0K. It is the lowest possible temperature where particles have minimal motion. Nothing can be colder than absolute zero.
At what temperature does water freeze and boil?
Water freezes at 0°C (32°F or 273.15K) and boils at 100°C (212°F or 373.15K) at standard atmospheric pressure. These are the reference points used to define the Celsius scale.
How accurate is the temperature conversion?
Our temperature converter uses precise mathematical formulas and allows you to adjust decimal precision from 0 to 4 decimal places. All conversions are calculated in real-time with full accuracy.