Temperature Converter
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Temperature Converter

Convert between all temperature scales with precision

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📐 Conversion Formula
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Common Temperatures

Absolute Zero
Water Freezes
Water Boils
Room Temperature
Human Body
Scales
History
Formulas

Temperature Scales

Celsius (°C)

Inventor: Anders Celsius (1742)

Absolute Zero: −273.15 °C

Freezing / Boiling: 0 °C / 100 °C

Most widely used temperature scale worldwide.

Fahrenheit (°F)

Inventor: Daniel Fahrenheit (1724)

Absolute Zero: −459.67 °F

Freezing / Boiling: 32 °F / 212 °F

Primarily used in the United States.

Kelvin (K)

Inventor: Lord Kelvin (1848)

Absolute Zero: 0 K

Freezing / Boiling: 273.15 K / 373.15 K

SI base unit of thermodynamic temperature.

Rankine (°R)

Inventor: William Rankine (1859)

Absolute Zero: 0 °R

Freezing / Boiling: 491.67 °R / 671.67 °R

Absolute scale using Fahrenheit degrees.

Réaumur (°Ré)

Inventor: René Antoine Ferchault de Réaumur (1730)

Freezing / Boiling: 0 °Ré / 80 °Ré

Historically used in parts of Europe.

Delisle (°De)

Inventor: Joseph-Nicolas Delisle (1732)

Freezing / Boiling: 150 °De / 0 °De

Inverted scale — higher values mean colder.

Newton (°N)

Inventor: Isaac Newton (~1700)

Freezing / Boiling: 0 °N / 33 °N

One of the earliest temperature scales.

Rømer (°Rø)

Inventor: Ole Christensen Rømer (1701)

Freezing / Boiling: 7.5 °Rø / 60 °Rø

Inspired Fahrenheit's scale development.

Planck (Tᴘ) Theoretical

Based on: Planck units in physics

Value: ≈ 1.41679 × 10³² K

The highest meaningful temperature in physics.

Conversion History

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All Formulas

Celsius → Others

°F = (°C × 9/5) + 32

K = °C + 273.15

°R = (°C + 273.15) × 9/5

°Ré = °C × 4/5

°De = (100 − °C) × 3/2

°N = °C × 33/100

°Rø = °C × 21/40 + 7.5

Tᴘ = (°C + 273.15) / 1.41679×10³²

Others → Celsius

°F → °C: (°F − 32) × 5/9

K → °C: K − 273.15

°R → °C: (°R − 491.67) × 5/9

°Ré → °C: °Ré × 5/4

°De → °C: 100 − °De × 2/3

°N → °C: °N × 100/33

°Rø → °C: (°Rø − 7.5) × 40/21

Tᴘ → °C: Tᴘ × 1.41679×10³² − 273.15

Ultimate Temperature Converter — All major historical & scientific scales

Planck temperature is theoretical (≈ 1.41679 × 10³² K)

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