Temperature Conversion Chart
Use this printable temperature chart for common Celsius, Fahrenheit, Kelvin, and Rankine reference points. The formulas show the offsets clearly, which is where most temperature conversion mistakes happen.
| Celsius | Fahrenheit | Kelvin | Rankine | Note |
|---|---|---|---|---|
| -40 | -40.0 | 233.15 | 419.67 | Celsius and Fahrenheit meet here. |
| -20 | -4.0 | 253.15 | 455.67 | Common reference point. |
| 0 | 32.0 | 273.15 | 491.67 | Water freezes at standard pressure. |
| 10 | 50.0 | 283.15 | 509.67 | Common reference point. |
| 20 | 68.0 | 293.15 | 527.67 | Common reference point. |
| 25 | 77.0 | 298.15 | 536.67 | Common reference point. |
| 30 | 86.0 | 303.15 | 545.67 | Common reference point. |
| 37 | 98.6 | 310.15 | 558.27 | Common reference point. |
| 40 | 104.0 | 313.15 | 563.67 | Common reference point. |
| 60 | 140.0 | 333.15 | 599.67 | Common reference point. |
| 80 | 176.0 | 353.15 | 635.67 | Common reference point. |
| 100 | 212.0 | 373.15 | 671.67 | Water boils at standard pressure. |
C to F
F = C x 9 / 5 + 32
F to C
C = (F - 32) x 5 / 9
C to K
K = C + 273.15
Temperature chart questions
What is the Celsius to Fahrenheit formula?
Use F = C x 9 / 5 + 32. The multiplication changes the size of the degree interval, and the plus 32 handles the offset between the Celsius and Fahrenheit zero points.
What is the Fahrenheit to Celsius formula?
Use C = (F - 32) x 5 / 9. Subtracting 32 removes the Fahrenheit offset before the degree interval is scaled into Celsius.
Why does temperature need more than multiplication?
Temperature scales have different zero points, so Celsius and Fahrenheit conversions need an offset. Kelvin and Rankine are absolute scales, but they still connect to Celsius and Fahrenheit through interval size and offset.
Where are Celsius and Fahrenheit equal?
Celsius and Fahrenheit are equal at -40 degrees. That point is useful for checking whether a temperature conversion formula is being applied in the right order.
Can I use this chart for scientific calculations?
Use Kelvin for most scientific formulas that require absolute temperature. The chart helps with reference values, while the live converter is better for arbitrary temperatures and exact table output.