Temperature conversion

Rankine to Kelvin conversion

Convert Rankine (°R) to Kelvin (K). Exact formula K = °R × 5/9, examples, freeze/boil table, FAQ. Switch °R → K or K → ° Try it free. Try it free.

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Formulas

Core equations used by this converter.

°R → KK = °R × 5/9

Exact anchors491.67 °R = 273.15 K

K → °R°R = K × 9/5

iTemperature conversions are affine (scale + offset), not a single multiply. Absolute zero is 0 K = −273.15 °C = −459.67 °F = 0 °R.

How to use

Choose °R → K or K → °R

Use the tabs to switch direction. Forward mode needs rankine; reverse uses the opposite unit.

Enter the temperature

Type a signed value in the active unit field.

Convert and read the result

Use Convert or let the result update automatically.

Example conversions

Common values with formula and result.

491.67 °R to Kelvin

491.67 × 5/9 = 273.15 K

273.15 K

527.67 °R to Kelvin

527.67 × 5/9 = 293.15 K

293.15 K

671.67 °R to Kelvin

671.67 × 5/9 = 373.15 K

373.15 K

0 °R to Kelvin

0 × 5/9 = 0 K

0 K

Rankine to Kelvin conversion specification

Version 1.1.0 · Engine tested

Calculation status

Engine tested 4 published cases
Named expert review Not performed
Calculation version 1.1.0

Review policy

Definition: Rankine (°R) converts to K using an affine temperature relation. Convert Rankine (°R) to Kelvin (K). Exact formula K = °R × 5/9, examples, freeze/boil table, FAQ.
What it calculates: Temperature between °R and K. Switch direction with the converter tabs.
Inputs: Rankine (°R) or reverse unit (K)
Outputs: Converted value in K or °R
Formula: K = °R × 5/9 · °R = K × 9/5
Rankine to Kelvin conversion table: Rankine (°R) Kelvin (K) Notes
0 °R 0 K Absolute zero
491.67 °R 273.15 K Water freezes
527.67 °R 293.15 K Room temperature
671.67 °R 373.15 K Water boils (1 atm)
Assumptions: Conversion runs locally in the browser; values are not uploaded.
Uses the standard factor/definition for these units.
Units: °R → K
K → °R
Boundary conditions: Empty or non-numeric input yields no valid result.
Negative temperatures are allowed.
Example: 273.15 °R → 151.75 K
Validation cases: 273.15 °R → 151.75 K
293.15 °R → 162.86111 K
310.15 °R → 172.30556 K
373.15 °R → 207.30556 K
Sources: SI / international unit definitions where applicable
CalculatorX conversion factors (local runtime)
Calculation version: 1.1.0

Rankine (°R)	Kelvin (K)	Notes
0 °R	0 K	Absolute zero
491.67 °R	273.15 K	Water freezes
527.67 °R	293.15 K	Room temperature
671.67 °R	373.15 K	Water boils (1 atm)

Background

Interpretation and common distinctions.

Use the converter tabs to switch direction when available. Results for Rankine to Kelvin conversion update locally in your browser.

Frequently asked questions

Key distinctions behind the conversion.

How do you convert using Rankine to Kelvin conversion?

Use K = °R × 0.5555555555555556 + 0. Example: 491.67 °R to Kelvin → 273.15 K.

Can I switch direction?

Use the converter tabs when available, or open the related reverse tool from Related.

Does this run online or locally?

Calculation runs locally in your browser. Values are not uploaded.

How precise are the results?

Results follow the formulas on this page. Round to the precision your use case needs.