Fahrenheit to Rankine (°F to °R)
Result
460.67 Rankine
Formula
°R = °F × 1 + 459.67
The kelvin is the SI base unit, defined through the Boltzmann constant. A Celsius temperature is the kelvin temperature minus 273.15, and a Fahrenheit degree is 5/9 of a Celsius degree with water freezing at 32 °F. Rankine uses Fahrenheit-sized degrees from absolute zero.
Worked examples
- 1 °F × 1 + 459.67 = 460.67 °R
- 10 °F × 1 + 459.67 = 469.67 °R
- 100 °F × 1 + 459.67 = 559.67 °R
Common mistakes
- Temperature readings and temperature differences convert differently: a reading uses °F = °C × 9/5 + 32, but a change of 10 °C is a change of 18 °F (no +32).
- −40 is the same reading in °C and °F; the popular "double it and add 30" shortcut drifts several degrees away from about 10 °C.
- Kelvin is written without a degree sign (300 K) and cannot be negative.
Fahrenheit to Rankine table
| Fahrenheit (°F) | Rankine (°R) |
|---|---|
| 1 | 460.67 |
| 2 | 461.67 |
| 5 | 464.67 |
| 10 | 469.67 |
| 20 | 479.67 |
| 50 | 509.67 |
| 100 | 559.67 |
| 1,000 | 1,459.67 |
The units
- Fahrenheit (°F)
- Fahrenheit: degrees 5/9 the size of Celsius degrees, with water freezing at 32 °F and boiling at 212 °F at sea level.
- Rankine (°R)
- A unit of temperature.
Sources for these factors
- The International System of Units (SI Brochure), 9th edition — BIPM
- Guide for the Use of the International System of Units (SP 811), Appendix B: conversion factors — NIST
- Handbook 44 (2024), Appendix C: General Tables of Units of Measurement — NIST
Last reviewed against these sources. An automated check recomputes every factor from its definition on each build. How we check accuracy