From Kelvin
| Scale | Formula |
|---|
| Celsius | K - 273.15 |
| Fahrenheit | K x 1.8 - 459.67 |
| Rankine | K x 1.8 |
| Delisle | (373.15 - K) x 1.5 |
| Newton | (K - 273.15) x 33/100 |
| Reaumur | (K - 273.15) x 0.8 |
| Romer | (K - 273.15) x 21/40 + 7.5 |
From Celsius
| Scale | Formula |
|---|
| Kelvin | C + 273.15 |
| Fahrenheit | C x 1.8 + 32 |
| Rankine | C x 1.8 + 491.67 |
| Delisle | (100 - C) x 1.5 |
| Newton | C x 33/100 |
| Reaumur | C x 0.8 |
| Romer | C x 21/40 + 7.5 |
From Fahrenheit
| Scale | Formula |
|---|
| Kelvin | (F + 459.67) / 1.8 |
| Celsius | (F - 32) / 1.8 |
| Rankine | F + 459.67 |
| Delisle | (212 - F) x 5/6 |
| Newton | (F - 32) x 11/60 |
| Reaumur | (F - 32) / 2.25 |
| Romer | (F - 32) x 7/24 + 7.5 |
From Rankine
| Scale | Formula |
|---|
| Kelvin | Ra / 1.8 |
| Celsius | Ra / 1.8 - 273.15 |
| Fahrenheit | Ra - 459.67 |
| Delisle | (671.67 - Ra) x 5/6 |
| Newton | (Ra - 491.67) x 11/60 |
| Reaumur | (Ra / 1.8 + 273.15) x 0.8 |
| Romer | (Ra - 491.67) x 7/24 + 7.5 |
From Delisle
| Scale | Formula |
|---|
| Kelvin | 373.15 - De x 2/3 |
| Celsius | 100 - De x 2/3 |
| Fahrenheit | 212 - De x 1.2 |
| Rankine | 671.67 - De x 1.2 |
| Newton | 33 - De x 0.22 |
| Reaumur | 80 - De x 8/15 |
| Romer | 60 - De x 0.35 |
From Newton
| Scale | Formula |
|---|
| Kelvin | N x 100/33 + 273.15 |
| Celsius | N x 100/33 |
| Fahrenheit | N x 60/11 + 32 |
| Rankine | N x 60/11 + 491.67 |
| Delisle | (33 - N) x 50/11 |
| Reaumur | N x 80/33 |
| Romer | N x 35/22 + 7.5 |
From Reaumur
| Scale | Formula |
|---|
| Kelvin | Re / 0.8 + 273.15 |
| Celsius | Re / 0.8 |
| Fahrenheit | Re x 2.25 + 32 |
| Rankine | Re x 2.25 + 491.67 |
| Delisle | (80 - Re) x 1.875 |
| Newton | Re x 33/80 |
| Romer | Re x 21/32 + 7.5 |
From Romer
| Scale | Formula |
|---|
| Kelvin | (Ro - 7.5) x 40/21 + 273.15 |
| Celsius | (Ro - 7.5) x 40/21 |
| Fahrenheit | (Ro - 7.5) x 24/7 + 32 |
| Rankine | (Ro - 7.5) x 24/7 + 491.67 |
| Delisle | (60 - Ro) x 20/7 |
| Newton | (Ro - 7.5) x 22/35 |
| Reaumur | (Ro - 7.5) x 32/21 |
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