Fahrenheit to Rankine Converter
Temperature · unit-converter
Convert Fahrenheit to Rankine with offset-aware formulas (not simple ratio scaling), step-by-step lines, and reference tables. Uses 273.15 for Celsius–Kelvin offsets, R = (9/5) × K for kelvin–rankine, and °F–R offset 459.67.
About Fahrenheit
Fahrenheit is common in the United States for weather and cooking. Water freezes at 32 °F and boils at 212 °F at standard pressure. Convert via Celsius or direct offset formulas.
About Rankine
Rankine is an absolute scale with the same degree size as Fahrenheit (1 R interval = 1 °F interval). 0 R is absolute zero. Relationship: R = °F + 459.67, and R = (9/5) × K (exact ratio to kelvin).
How to convert Fahrenheit to Rankine
From Fahrenheit to Rankine: R = °F + 459.67 (same degree size; rankine starts at absolute zero).
0 °F = 459.67 R; each °F step is one rankine step on the absolute scale.
Unlike units with a single fixed ratio (meters to feet), absolute temperatures include an offset. Always use the full formula for this pair—do not “multiply only” by a scale factor unless you are computing a temperature difference (interval), where offsets cancel.
Examples
Example #1: Convert 491.67 f to Rankine
(255.372222°C + 273.15) × 9/5 = 951.340000 R
→ 951.34 r
Example #2: Convert 671.67 f to Rankine
(355.372222°C + 273.15) × 9/5 = 1,131.340000 R
→ 1131.34 r
Summary
From Fahrenheit to Rankine: R = °F + 459.67 (same degree size; rankine starts at absolute zero).
Relationship context
Converting Fahrenheit to Rankine uses different zeros and step sizes. You cannot multiply by a single ratio alone for every pair—you first express the same physical temperature in an intermediate form (Celsius is used inside this tool), then map to Rankine. Unlike length or energy units, offsets matter for Celsius and Fahrenheit; kelvin and rankine are absolute scales linked by the exact factor 9/5.
Conversion tables
| Fahrenheit (f) | Rankine (r) |
|---|---|
| -40 | 419.67 |
| 0 | 459.67 |
| 32 | 491.67 |
| 68 | 527.67 |
| Fahrenheit (f) | Rankine (r) |
|---|---|
| 86 | 545.67 |
| 100 | 559.67 |
| 212 | 671.67 |