What Is This Tool?
This online converter transforms temperature values from the Réaumur scale, a historical temperature measurement, to the Kelvin scale, the SI base unit for thermodynamic temperature. It helps interpret and convert legacy temperature data into a modern absolute scale used widely in science and engineering.
How to Use This Tool?
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Enter the temperature value in Réaumur [°r]
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Select Réaumur as the input unit and Kelvin as the output unit
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Click the convert button to get the temperature in Kelvin [K]
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Use the converted value for scientific analysis or reference
Key Features
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Converts temperatures from Réaumur [°r] to Kelvin [K]
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Based on the defined conversion rate: 1 °r equals 1.25 K
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Supports interpreting historical meteorological and scientific records
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Useful for calibrating antique thermometers and laboratory devices
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Browser-based and easy to use without software installation
Examples
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10 °r converts to 12.5 K
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20 °r converts to 25 K
Common Use Cases
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Interpreting historical climate and meteorological data recorded in °Ré
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Calibrating or reading antique instruments that use the Réaumur scale
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Converting traditional or legacy industrial temperature specifications referencing Réaumur
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Applying thermodynamic temperature measurements in scientific research including cryogenics and astrophysics
Tips & Best Practices
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Ensure the input temperatures are measured at standard atmospheric pressure for accurate conversion
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Use converted Kelvin values in scientific calculations requiring absolute temperature
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Recognize that Réaumur is largely obsolete and conversions serve mainly historical and specialized contexts
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Double-check historical data context when interpreting old temperature records
Limitations
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Réaumur is an outdated scale rarely used in modern measurements
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Conversion assumes standard atmospheric pressure conditions
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Kelvin is an absolute scale; be mindful of zero-point reference shifts when converting from relative scales
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Conversion tool does not account for variations outside standard conditions
Frequently Asked Questions
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What is the Réaumur temperature scale?
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The Réaumur scale is a historical temperature measurement where 0 °Ré is the freezing point of water and 80 °Ré is the boiling point at standard atmospheric pressure.
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How do I convert Réaumur to Kelvin?
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Multiply the temperature in Réaumur by 1.25 to obtain the temperature in Kelvin.
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Why is Kelvin used for temperature measurement?
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Kelvin is the SI base unit for thermodynamic temperature, measured on an absolute scale with 0 K at absolute zero.
Key Terminology
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Réaumur Scale
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A historical temperature scale where 0 °Ré is freezing and 80 °Ré is boiling point of water at standard atmospheric pressure.
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Kelvin
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The SI base unit of thermodynamic temperature, defined with absolute zero as 0 K and equal magnitude to one degree Celsius.
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Standard Atmospheric Pressure
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A reference pressure condition under which the Réaumur scale is defined and conversion assumes validity.