tier_2 conversion

Convert Rankine to Delisle

Convert Rankine to Delisle with a verified formula, worked example, conversion table, precision guidance, and reverse conversion.

Rankine to Delisle

Delisle—

Quick answer

1 Rankine = -508.891736083 Delisle.

Formula

Delisle = (Rankine × 0.8333334388185787534065932582) − 509.7250695221606990076834187

Precision

Keep the offset and scale at full precision during calculation, then round the final temperature or scale value once.

How to convert Rankine to Delisle

Enter a value in Rankine.
Use the affine rule y = x × 0.8333334388185787534065932582 + -509.7250695221606990076834187; both scale and zero point can change.
Round the displayed Delisle value only when needed.

About these units

Rankine is a unit used in temperature conversions. Temperature scales express thermal state using different scale sizes and zero points. Its recorded symbol is °R. Delisle is a unit used in temperature conversions. Temperature scales express thermal state using different scale sizes and zero points. Its recorded symbol is °De.

Explore related conversions

Rankine to Delisle conversion table

Rankine	Delisle
-40 Rankine	-543.058407075 Delisle
-20 Rankine	-526.391738299 Delisle
0 Rankine	-509.725069522 Delisle
20 Rankine	-493.058400746 Delisle
37 Rankine	-478.891732286 Delisle
100 Rankine	-426.391725640 Delisle

Frequently asked questions

How do I convert from Rankine to Delisle?

Use the affine rule y = x × 0.8333334388185787534065932582 + -509.7250695221606990076834187; both scale and zero point can change.

What formula does CalculatorHQ use for Rankine to Delisle?

Delisle = (Rankine × 0.8333334388185787534065932582) − 509.7250695221606990076834187

How should I round the result?

Keep the offset and scale at full precision during calculation, then round the final temperature or scale value once.

Can I convert Delisle back to Rankine?

Yes. Use the linked reverse conversion, whose formula is validated against this pair with round-trip tests.