What is the formula to convert Rankine to Fahrenheit?

°F = °R − 459.67. Because Rankine and Fahrenheit use the same degree size, you only need to subtract the Rankine offset (459.67) from the Rankine value to get Fahrenheit.

What is 0 Rankine in Fahrenheit?

0 °R = −459.67 °F, which is absolute zero — the lowest temperature physically possible.

What is 491.67 Rankine in Fahrenheit?

491.67 °R = 32 °F, the freezing point of water.

What is 671.67 Rankine in Fahrenheit?

671.67 °R = 212 °F, the boiling point of water at sea level.

Why does Rankine use 459.67 as its offset?

Absolute zero is −459.67 °F. The Rankine scale starts at absolute zero but keeps the same degree size as Fahrenheit, so any Rankine value equals the equivalent Fahrenheit temperature plus 459.67.

Where is Rankine used?

Rankine is used in some US engineering fields, particularly thermodynamics, aerospace engineering, and certain HVAC calculations where an absolute temperature scale is required but Fahrenheit-unit increments are preferred.

Rankine to Fahrenheit Converter

Name: Rankine to Fahrenheit Converter
Availability: InStock
Author: Nham Vu

Convert temperatures from the Rankine scale (°R) to Fahrenheit (°F) using the exact formula °F = °R − 459.67.

Temperature Conversion

Rankine (°R)

Fahrenheit (°F)

Result

Enter a value in either field to see the result.

Common Reference Values

Description	Rankine (°R)	Fahrenheit (°F)
Absolute zero	0	−459.67
Fahrenheit zero (0 °F)	459.67	0
Water freezing point	491.67	32
Room temperature (68 °F)	528.67	68
Body temperature (98.6 °F)	559.67	100
Water boiling point	671.67	212

Click any row to load that value.

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Summary

Convert temperatures from the Rankine scale (°R) to Fahrenheit (°F) using the exact formula °F = °R − 459.67.

How it works

Enter a Rankine value in the top field — Fahrenheit updates instantly.
Or enter a Fahrenheit value in the bottom field — Rankine updates instantly.
The formula Rankine → Fahrenheit is: °F = °R − 459.67.
The reverse formula Fahrenheit → Rankine is: °R = °F + 459.67.
Results are rounded to four decimal places for precision.
Click any row in the reference table to load that value into the converter.

Use cases

Convert thermodynamic data from US engineering reports that use Rankine.
Cross-check temperature readings in aerospace and HVAC calculations.
Verify absolute zero, freezing point, and boiling point reference values.
Convert Rankine outputs from thermodynamic simulation software to Fahrenheit.
Study the relationship between absolute and relative temperature scales.

Frequently Asked Questions

Last updated: 2026-07-24 · Reviewed by Nham Vu