Meters of snow to millimeters of water
Type a value in m snow to get it in mm SWE instantly.
1,500mm SWE
That's 3.8× as deep as a deep mountain pack, while a glacier’s annual layer is 1.33× deeper. On a 10 m by 10 m roof that is about 150,000 liters of water.
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 m 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 m snow = 1,500 mm SWE.
The table below is for Cold powder (5% water).
Every unit
Your snow in every unit
Tables
m snow to mm SWE conversion table
| m snow | mm SWE |
|---|---|
| 1 m snow | 50 mm SWE |
| 5 m snow | 250 mm SWE |
| 10 m snow | 500 mm SWE |
| 25 m snow | 1,250 mm SWE |
| 50 m snow | 2,500 mm SWE |
| 100 m snow | 5,000 mm SWE |
| 200 m snow | 10,000 mm SWE |
| 300 m snow | 15,000 mm SWE |
| 500 m snow | 25,000 mm SWE |
| 1,000 m snow | 50,000 mm SWE |
mm SWE to m snow conversion table
| mm SWE | m snow |
|---|---|
| 1 mm SWE | 0.02 m snow |
| 5 mm SWE | 0.1 m snow |
| 10 mm SWE | 0.2 m snow |
| 25 mm SWE | 0.5 m snow |
| 50 mm SWE | 1 m snow |
| 100 mm SWE | 2 m snow |
| 200 mm SWE | 4 m snow |
| 300 mm SWE | 6 m snow |
| 500 mm SWE | 10 m snow |
| 1,000 mm SWE | 20 m snow |
Quick answers
Quick answers
- How many mm SWE is 1 m snow?
- 1 m snow is 50 mm SWE.
- How many mm SWE is 10 m snow?
- 10 m snow is 500 mm SWE.
- How many mm SWE is 30 m snow?
- 30 m snow is 1,500 mm SWE.
The units
About these units
Meters of snow (m snow)
For mountain snowpacks and avalanche work.
Millimeters of water (mm SWE)
The water the snow holds, which is what actually matters.
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