Centimeters of snow to millimeters of water
Type a value in cm snow to get it in mm SWE instantly.
That's 1.5× as deep as a good covering, while a good ski base is 6.7× deeper. On a 10 m by 10 m roof that is about 1,500 liters of water.
Convert the other way: mm SWE to cm snow
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 cm snow to mm SWE
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 cm snow = 15 mm SWE.
The table below is for Cold powder (5% water).
Every unit
Your snow in every unit
Tables
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 |
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 |
Quick answers
Quick answers
- How many mm SWE is 1 cm snow?
- 1 cm snow is 0.5 mm SWE.
- How many mm SWE is 10 cm snow?
- 10 cm snow is 5 mm SWE.
- How many mm SWE is 30 cm snow?
- 30 cm snow is 15 mm SWE.
The units
About these units
Centimeters of snow (cm snow)
The depth on the ground, which depends on the snow type.
Millimeters of water (mm SWE)
The water the snow holds, which is what actually matters.
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