Grams per kilogram of solvent to moles per kilogram (molal)
Type a value in g/kg to get it in mol/kg instantly.
That's 1.56× as concentrated as blood glucose, while medical saline is 18× more concentrated. Dissolved in water, that lowers the freezing point by about 0.01591 °C (twice that for salt).
Convert the other way: mol/kg to g/kg
What it means
How concentrated is that?
Weight percent and grams per kilogram use the solute chosen above. The freezing-point figure is for water and a solute that does not split into ions; salt roughly doubles it.
The math
How to convert g/kg to mol/kg
Weight percent is 100 × m·M ÷ (1000 + m·M), with m in mol/kg and M the molar mass in g/mol. The figures below use the solute chosen above.
Example: 0.5 g/kg = 0.00855578 mol/kg.
Weight percent and g/kg below are for Table salt, NaCl (58.44 g/mol). Change it above and they update.
Every unit
Your molality in every unit
Tables
g/kg to mol/kg conversion table
| g/kg | mol/kg |
|---|---|
| 0.001 g/kg | 1.711×10⁻⁵ mol/kg |
| 0.01 g/kg | 0.000171116 mol/kg |
| 0.05 g/kg | 0.000855578 mol/kg |
| 0.1 g/kg | 0.00171116 mol/kg |
| 0.155 g/kg | 0.00265229 mol/kg |
| 0.25 g/kg | 0.00427789 mol/kg |
| 0.5 g/kg | 0.00855578 mol/kg |
| 1 g/kg | 0.0171116 mol/kg |
| 2 g/kg | 0.0342231 mol/kg |
| 3 g/kg | 0.0513347 mol/kg |
| 5 g/kg | 0.0855578 mol/kg |
mol/kg to g/kg conversion table
| mol/kg | g/kg |
|---|---|
| 0.001 mol/kg | 0.05844 g/kg |
| 0.01 mol/kg | 0.5844 g/kg |
| 0.05 mol/kg | 2.922 g/kg |
| 0.1 mol/kg | 5.844 g/kg |
| 0.155 mol/kg | 9.0582 g/kg |
| 0.25 mol/kg | 14.61 g/kg |
| 0.5 mol/kg | 29.22 g/kg |
| 1 mol/kg | 58.44 g/kg |
| 2 mol/kg | 116.88 g/kg |
| 3 mol/kg | 175.32 g/kg |
| 5 mol/kg | 292.2 g/kg |
Quick answers
Quick answers
- How many mol/kg is 1 g/kg?
- 1 g/kg is 0.0171116 mol/kg.
- How many mol/kg is 10 g/kg?
- 10 g/kg is 0.171116 mol/kg.
- How many mol/kg is 0.5 g/kg?
- 0.5 g/kg is 0.00855578 mol/kg.
The units
About these units
Grams per kilogram of solvent (g/kg)
The weight of solute dissolved in each kilogram of solvent.
Moles per kilogram (molal) (mol/kg)
The SI unit of molality, also written m or molal.
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