Authoritative definitions of the International System of Units and SI prefixes.
Unit conversion
Fahrenheit to Rankine Converter
1 °F ≈ 460.67 °R. Enter a value to convert °F to °R, then use the formula and table below. Displayed digits may be rounded.
TemperatureInstant result
Decimals
Formula result = input + 459.67. 1 °F ≈ 460.67 °R
Nonzero results too small for the selected decimal places use scientific notation.
Nonzero results too small for the selected decimal places use scientific notation.
Common examples
One value, several units
Celsius-17.2222 °C
Kelvin255.9278 K
Rankine460.67 °R
Conversion table
| °F | °R |
|---|---|
| 1 °F | 460.67 °R |
| 2 °F | 461.67 °R |
| 5 °F | 464.67 °R |
| 10 °F | 469.67 °R |
| 25 °F | 484.67 °R |
| 50 °F | 509.67 °R |
| 100 °F | 559.67 °R |
Conversion chart
1 °F460.67 °R
5 °F464.67 °R
10 °F469.67 °R
25 °F484.67 °R
50 °F509.67 °R
Worked example
1 °F ≈ 460.67 °R. Apply the selected conversion formula to other input values.
Unit definition
Fahrenheit (°F) This unit is defined through the displayed non-linear relationship to kelvin.
Unit history
Daniel Gabriel Fahrenheit introduced his temperature scale in the early eighteenth century; the modern scale is exactly related to Celsius.
Step by step
1. Parse the value, including fractions.
2. Convert °F to kelvin.
3. Convert the base value to °R and apply your display precision.
Understand the result before using it
Fahrenheit to Rankine converts a value measured in Fahrenheit (°F) into the equivalent value in Rankine (°R). The numerical value changes because the size and definition of the selected unit changes; the underlying quantity does not.
Calculated result
The conversion follows the displayed unit relationship. Display rounding can hide additional digits, and measured inputs cannot become more accurate merely by changing units.
Formula, assumptions, and example
Formula
result = input + 459.67
Assumptions
- Fahrenheit and Rankine represent the same temperature quantity.
- The input is expressed in °F; the output is expressed in °R.
- The unit definitions and conventional relationship shown on this page apply.
Worked example
1 °F ≈ 460.67 °R. For another value, apply the same relationship and round only to the precision your source measurement supports.
When to use it
Good uses
- Read a °F measurement in a document that expects °R.
- Compare a fahrenheit value with a value reported in rankine.
- Check the °F to °R arithmetic before copying the result into another calculation.
Limitations
Common mistakes to avoid
- Temperature scales use offsets as well as scale factors, so a simple multiply-or-divide shortcut is not generally valid.
- Round the output to a precision justified by the original measurement.
- Verify safety-critical, regulated, laboratory, and contractual conversions against the controlling standard.
Sources and further reading
These references explain the underlying standards or provide authoritative context. Your own contract, institution, clinician, product documentation, local code, or governing standard may be the controlling source.
Guidance on unit names, symbols, conversions, and numerical presentation.
Questions about this calculation
How do I convert Fahrenheit to Rankine?
result = input + 459.67. Input is in °F; result is in °R. 1 °F ≈ 460.67 °R. The displayed digits may be rounded.
What is 1 °F in °R?
1 °F ≈ 460.67 °R. The displayed digits may be rounded. Use the full formula for other inputs; offset, reciprocal, and logarithmic scales cannot generally use this example as a multiplier.
Can I reverse the °F to °R conversion?
Yes. Swap the source and target units in the converter. The reverse relationship converts °R back to °F.
Is the Fahrenheit to Rankine result exact?
The conversion follows the displayed unit relationship. Display rounding can hide additional digits, and measured inputs cannot become more accurate merely by changing units.