Celsius to Réaumur Converter

Enter a value to calculate the result instantly and free of charge.

°C
0.8°Ré

1 °C = 0.8 °Ré

Conversion summary

1 °C = 0.8 °Ré

Formula
Réaumur = Celsius × 4/5
Category
Temperature
Units
°C → °Ré

1 °C in other units

Values update with the converter above. Select a row to open that conversion's detailed page.

How do you convert Celsius to Réaumur?

To convert Celsius to Réaumur, multiply by 4/5. A value of 100 °C equals 80 °Ré.

Conversion formula

Réaumur = Celsius × 4/5

Celsius to Réaumur conversion table

Celsius (°C)Réaumur (°Ré)
-40 °C-32 °Ré
0 °C0 °Ré
20 °C16 °Ré
37 °C29.6 °Ré
100 °C80 °Ré

What is Celsius?

Celsius is one of the most widely used temperature scales in daily and engineering practice.

Short history of Celsius

The Celsius scale became popular because it provides an intuitive reference tied to water phase-change temperatures.

Open the Celsius unit guide

What is Réaumur?

Réaumur is a unit used in temperature conversions and practical measurement work.

Short history of Réaumur

Réaumur became established as a practical temperature unit in technical, commercial or scientific use.

Open the Réaumur unit guide

Frequently asked questions

What is 1 Celsius in Réaumur?

1 C = 0.8 Re. Enter another value in the converter to calculate its equivalent instantly.

How do you convert Celsius to Réaumur?

To convert Celsius to Réaumur, multiply by 4/5. A value of 100 °C equals 80 °Ré.

How precise are the results?

Conversion results are calculated to 12 significant figures. Very large or very small values are shown in scientific notation.

Is the Celsius to Réaumur converter free?

Yes. The conversion tool on BirimCeviri.app is free and requires no sign-up.

Frequently asked questions

What is 1 °C in Réaumur?

1 °C = 0.8 °Ré.

How do you convert Celsius to Réaumur?

To convert Celsius to Réaumur, multiply by 4/5. A value of 100 °C equals 80 °Ré.

What is 1 °Ré in Celsius?

1 °Ré = 1.25 °C.

Sources

The definitions and conversion relationships on this page are aligned with standard metrology and SI reference material.

  1. BIPM: The International System of Units (SI Brochure)
  2. NIST: Guide for the Use of the International System of Units

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