Relative humidity to mixing ratio
Type a value in %RH to get it in g/kg instantly.
2.02g/kg
That's 1.21× as humid as desert air, while cold winter air is 1.65× wetter. A 50 m³ room at that level holds about 121.2 mL of water.
What it means
How much water is in the air?
Saturation values come from the Magnus formula, accurate to about 0.1% between −40 and 50 °C.
The math
How to convert %RH to g/kg
Relative humidity is a percentage of saturation, and saturation depends steeply on temperature: g/m³ = RH% × saturation(T) ÷ 100. The figures below use the temperature selected above.
Example: 50 %RH = 2.02036 g/kg.
The table below is for air at 0 °C, freezing.
Every unit
Your humidity in every unit
Tables
%RH to g/kg conversion table
| %RH | g/kg |
|---|---|
| 1 %RH | 0.0404073 g/kg |
| 2 %RH | 0.0808146 g/kg |
| 5 %RH | 0.202036 g/kg |
| 8 %RH | 0.323258 g/kg |
| 10 %RH | 0.404073 g/kg |
| 15 %RH | 0.606109 g/kg |
| 17 %RH | 0.686924 g/kg |
| 20 %RH | 0.808146 g/kg |
| 25 %RH | 1.01018 g/kg |
| 30 %RH | 1.21222 g/kg |
| 50 %RH | 2.02036 g/kg |
g/kg to %RH conversion table
| g/kg | %RH |
|---|---|
| 1 g/kg | 24.748 %RH |
| 2 g/kg | 49.496 %RH |
| 5 g/kg | 123.74 %RH |
| 8 g/kg | 197.984 %RH |
| 10 g/kg | 247.48 %RH |
| 15 g/kg | 371.22 %RH |
| 17 g/kg | 420.716 %RH |
| 20 g/kg | 494.96 %RH |
| 25 g/kg | 618.7 %RH |
| 30 g/kg | 742.44 %RH |
| 50 g/kg | 1,237.4 %RH |
Quick answers
Quick answers
- How many g/kg is 1 %RH?
- 1 %RH is 0.0404073 g/kg.
- How many g/kg is 10 %RH?
- 10 %RH is 0.404073 g/kg.
- How many g/kg is 50 %RH?
- 50 %RH is 2.02036 g/kg.
The units
About these units
Relative humidity (%RH)
A percentage of what this air could hold at its temperature.
Mixing ratio (g/kg)
Grams of water per kilogram of dry air, the meteorologist’s unit.
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