Atmospheres to degrees Celsius
Type a value in atm to get it in °C instantly.
49.93°C
At 49.93 °C water’s vapor pressure is 12.26 kPa (1.778 psi): water boils at that temperature when the pressure is that low.
Convert the other way: °C to atm
What it means
How hot is that?
Antoine equation for pure water, 1 to 374 °C (two sets of constants); within about 0.5 % of steam tables.
The math
How to convert atm to °C
log₁₀ p(mmHg) = 8.07131 − 1730.63 ÷ (233.426 + T) for 1–100 °C; above, A = 8.14019, B = 1810.94, C = 244.485.
Example: 0.121 atm = 49.9256 °C.
Every unit
That point in every unit
Tables
atm to °C conversion table
| atm | °C |
|---|---|
| 0.00855 atm | 5.00105 °C |
| 0.0121 atm | 10.0603 °C |
| 0.023 atm | 20.0062 °C |
| 0.0312 atm | 25.0181 °C |
| 0.0418 atm | 30.0153 °C |
| 0.0618 atm | 37.0057 °C |
| 0.0726 atm | 39.9943 °C |
| 0.121 atm | 49.9256 °C |
| 0.196 atm | 59.9886 °C |
| 0.307 atm | 70.0145 °C |
| 0.466 atm | 79.9741 °C |
| 0.691 atm | 89.9947 °C |
| 1 atm | 99.9968 °C |
| 1.41 atm | 109.895 °C |
| 2.02 atm | 121.064 °C |
| 4.66 atm | 149.97 °C |
| 15.3 atm | 199.952 °C |
°C to atm conversion table
| °C | atm |
|---|---|
| 5 °C | 0.00854937 atm |
| 10 °C | 0.0120511 atm |
| 20 °C | 0.0229911 atm |
| 25 °C | 0.0311663 atm |
| 30 °C | 0.0417634 atm |
| 37 °C | 0.0617807 atm |
| 40 °C | 0.0726222 atm |
| 50 °C | 0.121447 atm |
| 60 °C | 0.196103 atm |
| 70 °C | 0.306807 atm |
| 80 °C | 0.46649 atm |
| 90 °C | 0.69114 atm |
| 100 °C | 1.00011 atm |
| 110 °C | 1.4149 atm |
| 121 °C | 2.01596 atm |
| 150 °C | 4.66373 atm |
| 200 °C | 15.3156 atm |
Quick answers
Quick answers
- How many °C is 1 atm?
- 1 atm is 99.9968 °C.
- How many °C is 10 atm?
- 10 atm is 180.681 °C.
- How many °C is 0.121 atm?
- 0.121 atm is 49.9256 °C.
The units
About these units
Atmospheres (atm)
Vapor pressure in atmospheres.
Degrees Celsius (°C)
Water temperature (or boiling point).
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