Temperature Converter
Convert between different temperature scales Convert between 8 different units instantly with our free online tool.
Formula: °C = K - 273.15
Available Temperature Units
8 units supported for instant conversion
About Temperature Conversion
Our free online temperature converter helps you quickly and accurately convert between 8 different units of temperature. Whether you're a student, professional, or simply need everyday conversions, you get instant, precise results with the formula displayed.
Convert between different temperature scales This converter supports both metric and imperial units, making it ideal for international use. All conversions use internationally recognized standards and formulas.
Did You Know?
−40° is the only temperature where Celsius and Fahrenheit give the same reading: −40°C = −40°F.
The coldest natural temperature recorded on Earth was −89.2°C (−128.6°F) at Vostok Station, Antarctica on 21 July 1983.
The hottest temperature ever reliably measured at Earth's surface was 56.7°C (134°F) at Furnace Creek, Death Valley, California on 10 July 1913.
The surface of the Sun is about 5,505°C (9,941°F), but the outer corona reaches over 1,000,000°C — paradoxically hotter the farther you get from the surface.
Absolute zero (0 K / −273.15°C) has never been fully achieved in a laboratory, though scientists have cooled atoms to within a billionth of a degree above it.
Why Use Our Temperature Converter?
Instant Results
Conversions update as you type — no button clicks needed.
High Precision
Uses internationally standardized conversion factors (SI & NIST).
8+ Units
Convert between 8 temperature units used around the world.
API & AI Ready
REST API and MCP server let apps and AI assistants convert programmatically.
Common Temperature Conversion Table
Quick reference: Kelvin (K) to other common units.
| Kelvin (K) | Celsius (°C) | Fahrenheit (°F) | Rankine (°R) | Réaumur (°Ré) |
|---|---|---|---|---|
| 1 | -272.15 | -457.87 | 1.8 | -217.72 |
| 2 | -271.15 | -456.07 | 3.6 | -216.92 |
| 5 | -268.15 | -450.67 | 9 | -214.52 |
| 10 | -263.15 | -441.67 | 18 | -210.52 |
| 25 | -248.15 | -414.67 | 45 | -198.52 |
| 50 | -223.15 | -369.67 | 90 | -178.52 |
| 100 | -173.15 | -279.67 | 180 | -138.52 |
How to Use This Temperature Converter
Enter Value
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Select To Unit
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