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How to Convert from Reaumur [°r] to Celsius [°C]?
Learn how to convert temperatures from the historical Réaumur scale (°r) to the modern Celsius scale (°C) with clear examples and practical applications.
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Reaumur [°r] to Celsius [°C] Conversion Table
| Reaumur [°r] | Celsius [°C] |
|---|
Custom Unit Conversion Table Generator – Instant Printable Conversion Tables
Enter the starting number (positive decimal or integer ≥ 0). Example: 0.1, 1, 5.
Enter the ending number (positive decimal or integer > Start Value). Example: 10, 50, 100.
Enter the step size (positive decimal > 0 and < End Value – Start Value). Example: 1.0, 2.5.
| Reaumur [°r] | Celsius [°C] |
|---|
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What Is This Tool?
This tool enables users to convert temperature values from the Réaumur scale (°r), a historical temperature measurement, to the widely used Celsius scale (°C). It helps interpret legacy temperature data and adapt antique instrument readings to modern standards.
How to Use This Tool?
- Enter the temperature value in Réaumur (°r) that you want to convert.
- Select the input unit as Reaumur [°r] and the output unit as Celsius [°C].
- Click the convert button to get the equivalent temperature in Celsius.
- Review the result and apply it as needed for historical data interpretation or modern temperature use.
Key Features
- Converts temperature from Réaumur (°r) to Celsius (°C) based on the standard conversion rate.
- Guides users in interpreting temperatures from historical meteorological and scientific records.
- Supports restoration and calibration of antique thermometers using the Réaumur scale.
- Provides examples for easy understanding of the conversion process.
- Browser-based and easy to use with step-by-step instructions.
Examples
- 10 °r converts to 12.5 °C
- 32 °r converts to 40 °C
Common Use Cases
- Interpreting old meteorological and scientific data reported in Réaumur.
- Calibrating and reading antique laboratory thermometers that use the Réaumur scale.
- Converting traditional recipes or legacy industrial notes referencing Réaumur temperatures.
- Translating historical temperature values into Celsius for climate studies or research.
- Applying temperature values from old records to modern chemical or industrial processes.
Tips & Best Practices
- Always confirm the historical context to ensure correct interpretation of Réaumur data.
- Consider that original instruments and records may have rounding or measurement limitations.
- Use the standard atmospheric pressure assumption when applying this conversion.
- Cross-check converted values against modern references for critical applications.
- Utilize examples to validate conversions before applying to larger data sets.
Limitations
- The Réaumur scale is largely obsolete and seldom used in current temperature measurements.
- Conversion accuracy may be impacted by the precision of old instruments or rounding in original records.
- Users must be mindful of the historical basis and atmospheric conditions implicit in the scale.
Frequently Asked Questions
- What is the relationship between Réaumur and Celsius temperatures?
- One degree Réaumur equals 1.25 degrees Celsius, so to convert from Réaumur to Celsius, multiply the Réaumur value by 1.25.
- Why would I need to convert Réaumur to Celsius?
- This conversion is useful for interpreting historical temperature data, restoring antique instruments, or understanding old industrial and scientific records that used the Réaumur scale.
- Is the Réaumur scale still used today?
- The Réaumur scale is mostly obsolete and rarely used in modern applications, with Celsius being the preferred temperature scale.
Key Terminology
- Réaumur scale (°Ré or °r)
- A historical temperature scale where 0°Ré is the freezing point of water and 80°Ré is the boiling point of water at standard atmospheric pressure.
- Celsius scale (°C)
- A temperature scale where 0 °C is the freezing point of water and 100 °C is the boiling point of water at standard atmospheric pressure, defined relative to kelvin.
- Conversion rate
- The factor used to transform temperatures from one scale to another; here, 1 °Ré equals 1.25 °C.