Temperature Converter

Convert temperatures between Celsius, Fahrenheit, Kelvin and Rankine with instant results and common reference points like body temperature and boiling points.

100% free No uploads Runs in your browser No signup

Temperature converter

Value

Result

From scale

To scale

All scales

20 in C equals:

Common reference points

Reference	Celsius	Fahrenheit	Kelvin	Rankine
Absolute zero	-273.15	-459.67	0	0
Freezing point of water	0	32	273.15	491.67
Room temperature	21	69.8	294.15	529.47
Human body temperature	37	98.6	310.15	558.27
Fever threshold	38	100.4	311.15	560.07
Boiling point of water	100	212	373.15	671.67

The conversion formulas are exact: °F = °C × 9⁄5 + 32, K = °C + 273.15 and °R = (°C + 273.15) × 9⁄5. Rankine is the Fahrenheit-based absolute scale used in some engineering fields.

How to use the Temperature Converter

1
Open the tool above — it is already running, no install or account needed.
2
Enter your input and adjust the options to match what you need.
3
Copy or download the result — everything was processed locally in your browser.

Private by design

This tool runs 100% inside your own browser using local JavaScript — your input never touches a server. That makes it instant, offline-capable in many cases, and private even for sensitive data.

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