How to Convert Fahrenheit to Rankine (°F to °R)
Temperature conversions help with American oven recipes in Fahrenheit, weather apps set to the wrong unit, and science homework that uses kelvin. This guide shows how to convert fahrenheit into rankine by hand, with examples and a quick-reference table.
The conversion
Temperature scales have different zero points, so you cannot use a single multiplier. Convert through kelvin: °F converted through kelvin: (((°F-32)*5/9+273.15)*9/5).
°F converted through kelvin: (((°F-32)*5/9+273.15)*9/5)
Worked examples
- 15 °F = 474.67 °R
- 32 °F = 491.67 °R
- 100 °F = 559.67 °R
Fahrenheit to Rankine table
| Fahrenheit | Rankine |
|---|---|
| -40 °F | 419.67 °R |
| -10 °F | 449.67 °R |
| 0 °F | 459.67 °R |
| 10 °F | 469.67 °R |
| 20 °F | 479.67 °R |
| 25 °F | 484.67 °R |
| 30 °F | 489.67 °R |
| 37 °F | 496.67 °R |
| 50 °F | 509.67 °R |
| 100 °F | 559.67 °R |
| 200 °F | 659.67 °R |
Common questions
Is °F to °R exact?
The factors used here are the internationally defined values where they exist; results are rounded for display only.
How do I convert back?
Use the Rankine to Fahrenheit converter.
Mistakes to avoid
Rounding the factor too early
Using 3 instead of 3.28 for feet per metre introduces an error of almost 9% before you have started.
Mixing similar-sounding units
US and imperial gallons, pints and tons are different sizes, and decimal kilobytes differ from binary kibibytes.
Dropping the units
A bare number without a unit is easy to misread later. Always write the unit with the result.
Background
Singapore adopted the metric system in the 1970s, replacing imperial units and traditional Chinese measures in most official uses. Metric units are now standard in schools, trade and government, but older units survive in property, markets and imported goods.
Many conversion factors are exact by definition. The inch has been defined as exactly 2.54 centimetres since 1959, and the pound as exactly 0.45359237 kilograms, so conversions involving them can be as precise as you need.
Writing the units next to every number while you work is the simplest way to avoid mistakes. If the units do not cancel to leave the one you want, the calculation is set up wrongly.
For any value, use the Fahrenheit to Rankine Converter or browse all temperature converters.
Run your own numbers: Fahrenheit to Rankine Converter