Temperature Converter
The temperature converter shows all four major temperature scales simultaneously — Celsius, Fahrenheit, Kelvin, and Rankine — updating in real time as you type. Temperature conversion requires formulas rather than simple multiplication, which is why a dedicated converter is useful. Whether you are reading a weather forecast, following a recipe, or working with scientific data, this tool gives you all scales at once for instant comparison.
Thermometer
Key Temperature Reference Points
| Description | °C | °F | K |
|---|---|---|---|
| Absolute zero | −273.15 | −459.67 | 0 |
| Dry ice (CO₂) | −78.5 | −109.3 | 194.65 |
| Water freezes | 0 | 32 | 273.15 |
| Room temperature | 22 | 71.6 | 295.15 |
| Human body | 37 | 98.6 | 310.15 |
| Water boils | 100 | 212 | 373.15 |
| Oven (baking) | 180 | 356 | 453.15 |
| Oven (roasting) | 220 | 428 | 493.15 |
| Lead melts | 327 | 621 | 600.15 |
| Sun surface | 5500 | 9932 | 5773 |
FAQ
What is the formula to convert Celsius to Fahrenheit?
Multiply Celsius by 9/5, then add 32.
What is absolute zero and what is Kelvin?
Absolute zero is 0 K, or −273.15°C, where thermal motion is at its theoretical minimum.
Why do the US and UK use different temperature scales?
The US commonly uses Fahrenheit for weather. The UK uses Celsius for most public weather and scientific contexts, though Fahrenheit may still appear informally.
What is a normal human body temperature in Celsius and Fahrenheit?
A commonly cited normal body temperature is about 37°C or 98.6°F, though healthy readings vary.
At what temperature are Celsius and Fahrenheit equal?
Celsius and Fahrenheit are equal at −40 degrees.