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此计算器目前以英文显示，翻译正在准备中。

单位转换

已验证计算器，公式透明

单位转换

Réaumur to Celsius Converter.

Converts a temperature from the Réaumur scale to Celsius. The Réaumur scale sets the freezing point of water at 0°Ré and boiling point at 80°Ré.

结果随输入实时更新。
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您的输入

工作原理

  1. 1

    Enter the temperature in degrees Réaumur.

  2. 2

    Multiply the Réaumur value by 1.25.

  3. 3

    The result is the temperature in degrees Celsius.

reaumur * 1.25

常见问题

What is the Réaumur scale?

The Réaumur scale is a temperature scale where water freezes at 0°Ré and boils at 80°Ré. It was widely used in Europe in the 18th and 19th centuries.

How do I convert Celsius to Réaumur?

To convert Celsius to Réaumur, divide the Celsius temperature by 1.25. For example, 25°C ÷ 1.25 = 20°Ré.

Is the Réaumur scale still used today?

It is rarely used today, but it appears in historical documents and some old recipes, especially in France and Germany.

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结果

公式已检查

Temperature in Celsius

25°C

询问任何问题

估算仅供参考——重要决策请咨询专业人士。

工作原理

Converts a temperature from the Réaumur scale to Celsius. The Réaumur scale sets the freezing point of water at 0°Ré and boiling point at 80°Ré.

  1. Enter the temperature in degrees Réaumur.
  2. Multiply the Réaumur value by 1.25.
  3. The result is the temperature in degrees Celsius.

公式

此计算器背后的数学公式，供您核对结果。

Réaumur to Celsius

°C = °Ré × 1.25

Since 80°Ré equals 100°C, each degree Réaumur is 100/80 = 1.25 degrees Celsius.

Example:

Input: °Ré = 40

Calculation: 40 × 1.25

Result: 50°C

实际应用场景

此计算在日常生活中的应用。

Historical temperature records

Convert old temperature readings from Réaumur to Celsius for research or genealogy.

Example: A diary entry says 30°Ré, which is 37.5°C.

Old recipes

Some vintage recipes specify oven temperatures in Réaumur; convert to Celsius for modern cooking.

Example: A recipe calls for 25°Ré, which is 31.25°C.

Educational purposes

Learn about historical temperature scales and their relationships.

Example: Understand why water boils at 80°Ré.

提示与常见错误

Tips

  • Remember that 0°Ré is the freezing point of water, and 80°Ré is the boiling point.
  • For quick mental conversion, multiply Réaumur by 1.25 or add 25% of the value.
  • Use the calculator for precise conversions, especially for negative temperatures.

Common Mistakes to Avoid

  • Forgetting that the Réaumur scale has 80 degrees between freezing and boiling, not 100.
  • Using the wrong conversion factor, such as 1.8 (which is for Fahrenheit).
  • Confusing Réaumur with Rankine or other temperature scales.

假设与限制

  • Use the stated inputs and units.
  • Results are estimates for planning and education.
  • Check measurements and source data before making an important decision.