Rankine to Celsius Converter
Convert temperatures between Rankine and Celsius instantly. Enter a value in either field for live two-way conversion.
Temperature Conversion
Result
Enter a value in either field to see the result.
Rankine
—
R
Celsius
—
°C
Common Reference Values
| Description | Rankine (R) | Celsius (°C) |
|---|---|---|
| Absolute zero | 0 | −273.15 |
| Fahrenheit zero | 459.67 | −17.7778 |
| Water freezing point | 491.67 | 0 |
| Room temperature (68 °F) | 528.67 | 20 |
| Water boiling point | 671.67 | 100 |
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Summary
Convert temperatures between Rankine and Celsius instantly. Enter a value in either field for live two-way conversion.
How it works
- Enter a Rankine value in the top field — Celsius updates instantly.
- Enter a Celsius value in the bottom field — Rankine updates instantly.
- The formula Rankine → Celsius is: C = R × 5/9 − 273.15.
- The reverse formula Celsius → Rankine is: R = (C + 273.15) × 9/5.
- Results are rounded to four decimal places for precision.
Use cases
- Convert thermodynamic data from US engineering specs to metric.
- Verify temperature readings when working with Rankine-based equations.
- Cross-check absolute zero and steam-point reference values.
- Convert legacy HVAC or aerospace data reported in Rankine.
Frequently Asked Questions
Last updated: 2026-07-22 ·
Reviewed by Nham Vu