Reaumur to Rankine Converter
Enter a Reaumur temperature and get the Rankine equivalent instantly, with the step-by-step formula and a reference table.
Temperature Converter
Enter a value in either field. Conversion is instant.
Common Reference Values
| Description | °Ré | °R |
|---|
Formulas
°R = (°Ré × 1.25 + 273.15) × 9/5
°Ré = (°R × 5/9 − 273.15) ÷ 1.25
Reaumur sets water's freezing point at 0 and boiling at 80. Rankine is absolute — 0 °R = absolute zero. One Rankine degree equals one Fahrenheit degree.
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Summary
Enter a Reaumur temperature and get the Rankine equivalent instantly, with the step-by-step formula and a reference table.
How it works
- Type a Reaumur temperature into the top input field.
- The converter applies °R = (°Ré × 1.25 + 273.15) × 9/5 and shows the Rankine result instantly.
- Or type a Rankine value in the bottom field to reverse the conversion.
- The formula panel below the inputs shows the exact calculation.
- Click any row in the reference table to load that temperature into the converter.
Use cases
- Interpret historical scientific documents that used the Reaumur scale alongside Rankine thermodynamic tables.
- Cross-check absolute temperature values between old European measurements and US engineering specs.
- Convert dairy or fermentation temperatures from 19th-century manuals to Rankine for engineering calculations.
- Study the relationship between the 80-degree Reaumur scale and the absolute Rankine scale.
- Quick sanity checks when working with both legacy and modern temperature references.
Frequently Asked Questions
Last updated: 2026-07-24 ·
Reviewed by Nham Vu