What is the formula for Fahrenheit to Rankine?

Rankine = Fahrenheit + 459.67. There is no multiplication in it, because a Rankine degree and a Fahrenheit degree are the same size: only the zero point moves. So 0 °F is 459.67 °R, 32 °F is 491.67 °R, 70 °F is 529.67 °R, 212 °F is 671.67 °R and 1,000 °F is 1,459.67 °R. For whole-number Fahrenheit inputs whose output fits the twelve-significant-digit display, the Rankine result ends in .67, which is a quick way to check you read the right line.

Which temperature conversions use only an offset?

Fahrenheit to Rankine and Celsius to Kelvin both preserve degree size and move only the zero point: °R = °F + 459.67 and K = °C + 273.15. Fahrenheit to Celsius or Kelvin changes degree size as well as the zero point, using a factor of 5/9. Kelvin to Rankine changes degree size without an offset: °R = K × 1.8. This converter treats these as absolute temperatures; temperature differences use scale factors without offsets.

Who actually uses Rankine?

Rankine expresses absolute temperature with the Fahrenheit degree size. Formulae such as the ideal-gas law, absolute-temperature ratios and thermal-radiation equations need absolute temperature in a unit consistent with their other quantities. The converter performs scale arithmetic for a stated temperature; it does not solve those engineering equations or judge a system’s performance.

Where is Rankine in this converter, and why is it called uncommon?

Both temperature menus list all four scales, and this page opens with Rankine selected in To. The readout normally lists the common units other than From, so with Fahrenheit selected it shows Celsius and Kelvin. Show 1 more adds Rankine there too. The target stays available in the menus regardless of the switch. A valid deliberate uncommon-unit preference can be saved when storage is usable; restoration itself does not rewrite the saved record.

Is the number exact, or is it rounded?

The defined offset 459.67 is exact. The converter uses decimal-rational arithmetic for the written input, so −459.67 °F gives a clean 0 °R and reversing the pair converts 0 °R to −459.67 °F. The display and copied outputs round to twelve significant digits when needed. Inputs below absolute zero still convert algebraically but are labeled as arithmetic that names no real temperature. Copy complete conversion retains input, units and conventions with selectable recovery.

How do I convert Rankine back to Fahrenheit, or reach it from Celsius and Kelvin?

Subtract: Fahrenheit = Rankine - 459.67. The swap button between the two boxes reverses the pair for you, so the page becomes Rankine to Fahrenheit, where 671.67 °R gives 212 °F and 0 °R gives -459.67 °F. From the metric side the factor is 1.8: Rankine = Kelvin × 1.8, so 1 K is 1.8 °R and 373.15 K is 671.67 °R, while Rankine = (Celsius + 273.15) × 1.8 puts 0 °C at 491.67 °R and 100 °C at 671.67 °R. The To menu converts to any of those without leaving the page.

Why does this page open on Fahrenheit and Rankine when I last converted something else?

This focused page opens on Fahrenheit and Rankine, while preserving the main converter’s saved unit pair. When storage is usable, a saved value and uncommon-unit preference can travel between pages. Its suffix must still match the current From unit. Valid deliberate scalar edits can save those fields after a short delay; invalid or incomplete drafts do not overwrite the saved record. Unusable or conflicting records are kept with an explanation until you use Forget saved settings, which keeps the current conversion on screen.

Fahrenheit to Rankine Converter

Rankine is Fahrenheit's absolute scale: the degrees are exactly the same size, and zero sits at absolute zero rather than 32 degrees below the freezing point of water, so the conversion is a single addition, R = F + 459.67. That makes 1 °F equal to 460.67 °R, 32 °F equal to 491.67 °R, 98.6 °F to 558.27 °R and 212 °F to 671.67 °R. This page opens the converter already set to Fahrenheit and Rankine, so the headline answer needs no menu work, and it lists Celsius and Kelvin for the same reading underneath. Rankine is filed here as an uncommon unit, so it joins that list only once you turn on Uncommon units, Show 1 more, in the strip below the converter.

From

To460.67

Category: Temperature

Base unit: kelvin

Uncommon units: Show 1 more

These are absolute temperatures with scale offsets, not temperature differences. Values below absolute zero are labeled as arithmetic only.

Results round to 12 significant digits using the listed unit definitions. Input must have a finite numeric magnitude and at most 512 significant digits. Type a single decimal or scientific number; a matching From unit suffix is accepted. Commas and grouped spaces separate thousands; decimal commas, fractions and compound measurements are refused.

1 °F in every temperature unit

Celsius°C
-17.2222222222
KelvinK
255.927777778

Selectable complete conversion

Unit Converter — Temperature
Input: 1 (Fahrenheit, °F)
Result: 460.67 °R (Rankine)
Displayed values round to 12 significant digits.
These are absolute temperatures with scale offsets, not temperature differences. Values below absolute zero are labeled as arithmetic only.
All other units:
Celsius (°C): -17.2222222222
Kelvin (K): 255.927777778
Rankine (°R): 460.67

Common questions

What is the formula for Fahrenheit to Rankine?: Rankine = Fahrenheit + 459.67. There is no multiplication in it, because a Rankine degree and a Fahrenheit degree are the same size: only the zero point moves. So 0 °F is 459.67 °R, 32 °F is 491.67 °R, 70 °F is 529.67 °R, 212 °F is 671.67 °R and 1,000 °F is 1,459.67 °R. For whole-number Fahrenheit inputs whose output fits the twelve-significant-digit display, the Rankine result ends in .67, which is a quick way to check you read the right line.
Which temperature conversions use only an offset?: Fahrenheit to Rankine and Celsius to Kelvin both preserve degree size and move only the zero point: °R = °F + 459.67 and K = °C + 273.15. Fahrenheit to Celsius or Kelvin changes degree size as well as the zero point, using a factor of 5/9. Kelvin to Rankine changes degree size without an offset: °R = K × 1.8. This converter treats these as absolute temperatures; temperature differences use scale factors without offsets.
Who actually uses Rankine?: Rankine expresses absolute temperature with the Fahrenheit degree size. Formulae such as the ideal-gas law, absolute-temperature ratios and thermal-radiation equations need absolute temperature in a unit consistent with their other quantities. The converter performs scale arithmetic for a stated temperature; it does not solve those engineering equations or judge a system’s performance.
Where is Rankine in this converter, and why is it called uncommon?: Both temperature menus list all four scales, and this page opens with Rankine selected in To. The readout normally lists the common units other than From, so with Fahrenheit selected it shows Celsius and Kelvin. Show 1 more adds Rankine there too. The target stays available in the menus regardless of the switch. A valid deliberate uncommon-unit preference can be saved when storage is usable; restoration itself does not rewrite the saved record.
Is the number exact, or is it rounded?: The defined offset 459.67 is exact. The converter uses decimal-rational arithmetic for the written input, so −459.67 °F gives a clean 0 °R and reversing the pair converts 0 °R to −459.67 °F. The display and copied outputs round to twelve significant digits when needed. Inputs below absolute zero still convert algebraically but are labeled as arithmetic that names no real temperature. Copy complete conversion retains input, units and conventions with selectable recovery.
How do I convert Rankine back to Fahrenheit, or reach it from Celsius and Kelvin?: Subtract: Fahrenheit = Rankine - 459.67. The swap button between the two boxes reverses the pair for you, so the page becomes Rankine to Fahrenheit, where 671.67 °R gives 212 °F and 0 °R gives -459.67 °F. From the metric side the factor is 1.8: Rankine = Kelvin × 1.8, so 1 K is 1.8 °R and 373.15 K is 671.67 °R, while Rankine = (Celsius + 273.15) × 1.8 puts 0 °C at 491.67 °R and 100 °C at 671.67 °R. The To menu converts to any of those without leaving the page.
Why does this page open on Fahrenheit and Rankine when I last converted something else?: This focused page opens on Fahrenheit and Rankine, while preserving the main converter’s saved unit pair. When storage is usable, a saved value and uncommon-unit preference can travel between pages. Its suffix must still match the current From unit. Valid deliberate scalar edits can save those fields after a short delay; invalid or incomplete drafts do not overwrite the saved record. Unusable or conflicting records are kept with an explanation until you use Forget saved settings, which keeps the current conversion on screen.

Results round to 12 significant digits using the listed unit conventions. Many factors are exact definitions; psi and parsec use rounded coefficients. Temperature includes scale offsets. Days and weeks are fixed-duration units, and unit conversion does not determine calendar dates, ambient pressure or a software label’s convention.