Millimeters of water to centimeters of snow
Type a value in mm SWE to get it in cm snow instantly.
That's 3× as deep as a good covering, while a good ski base is 3.3× deeper. On a 10 m by 10 m roof that is about 3,000 liters of water.
Convert the other way: cm snow to mm SWE
What it means
How much water is that?
Snow density changes as a pack settles, so a measured depth converts differently on the day it falls and a week later.
The math
How to convert mm SWE to cm snow
Depth becomes water through the density: water in mm = snow depth in mm × density fraction. The figures below use the snow type selected above.
Example: 30 mm SWE = 60 cm snow.
The table below is for Cold powder (5% water).
Every unit
Your snow in every unit
Tables
mm SWE to cm snow conversion table
| mm SWE | cm snow |
|---|---|
| 1 mm SWE | 2 cm snow |
| 5 mm SWE | 10 cm snow |
| 10 mm SWE | 20 cm snow |
| 25 mm SWE | 50 cm snow |
| 50 mm SWE | 100 cm snow |
| 100 mm SWE | 200 cm snow |
| 200 mm SWE | 400 cm snow |
| 300 mm SWE | 600 cm snow |
| 500 mm SWE | 1,000 cm snow |
| 1,000 mm SWE | 2,000 cm snow |
cm snow to mm SWE conversion table
| cm snow | mm SWE |
|---|---|
| 1 cm snow | 0.5 mm SWE |
| 5 cm snow | 2.5 mm SWE |
| 10 cm snow | 5 mm SWE |
| 25 cm snow | 12.5 mm SWE |
| 50 cm snow | 25 mm SWE |
| 100 cm snow | 50 mm SWE |
| 200 cm snow | 100 mm SWE |
| 300 cm snow | 150 mm SWE |
| 500 cm snow | 250 mm SWE |
| 1,000 cm snow | 500 mm SWE |
Quick answers
Quick answers
- How many cm snow is 1 mm SWE?
- 1 mm SWE is 2 cm snow.
- How many cm snow is 10 mm SWE?
- 10 mm SWE is 20 cm snow.
- How many cm snow is 30 mm SWE?
- 30 mm SWE is 60 cm snow.
The units
About these units
Millimeters of water (mm SWE)
The water the snow holds, which is what actually matters.
Centimeters of snow (cm snow)
The depth on the ground, which depends on the snow type.
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