Free Online Temperature Converter — Celsius, Fahrenheit & Kelvin

How to Use This Temperature Converter

1. Click into any temperature field — Celsius, Fahrenheit, or Kelvin.
2. Type or paste your temperature value.
3. Both remaining fields update automatically in real time.
4. Copy the converted value you need.
5. Enter a new value at any time — no page reload needed.

Key Features

• Three scales in one tool — Celsius, Fahrenheit, and Kelvin.
• Real-time bidirectional conversion — edit any field and both others update instantly.
• Two-decimal precision — results accurate to 0.01 degrees.
• No formulas to remember — the tool handles all the math automatically.
• Works on any device — mobile, tablet, and desktop friendly.
• Completely free — no account, no ads, no usage limits.

Use Cases

Celsius to Fahrenheit Converter for Weather and Travel

When traveling between countries that use different temperature scales, local weather forecasts can be confusing. This converter helps you quickly understand whether to expect warm weather or a cold snap — just enter the local temperature and see its equivalent in your familiar scale.

Oven Temperature Celsius to Fahrenheit for Cooking and Baking

International recipes often list oven temperatures in Celsius while many ovens in the US display Fahrenheit. Enter the recipe's temperature in Celsius and instantly get the correct Fahrenheit setting so your dish comes out perfectly cooked every time. The same international recipes often specify ingredient quantities in grams or ounces — use the weight converter to handle those unit switches too.

Celsius to Kelvin Conversion for Science and Chemistry

Scientists, students, and engineers working with thermodynamic equations frequently need temperatures in Kelvin. This tool converts any Celsius or Fahrenheit value to Kelvin in one step, removing the chance of manual arithmetic errors in calculations.

Body Temperature Converter for Medical Reference

Medical documentation and health devices in different regions use different scales. Whether a thermometer reads in Celsius or Fahrenheit, this converter helps patients and caregivers quickly interpret readings relative to normal body temperature (37°C / 98.6°F).

Fahrenheit to Celsius for HVAC and Industrial Settings

HVAC technicians and industrial engineers working with equipment rated in one temperature scale can instantly verify settings and thresholds against specifications written in the other scale, preventing misconfigurations and equipment damage.

Temperature Scales Explained

There are three primary scales used for measuring temperature. Celsius (°C) is the metric standard used in most of the world. Fahrenheit (°F) is used primarily in the United States. Kelvin (K) is the scientific base unit of temperature, starting at absolute zero — the coldest possible temperature in the universe.

Conversion Formulas

• °C to °F: (°C × 9/5) + 32
• °F to °C: (°F − 32) × 5/9
• °C to K: °C + 273.15
• Absolute Zero: −273.15 °C or −459.67 °F

Frequently Asked Questions