Calculating your snow load is straightforward once you know the Snow Load formula and what each input means. This guide explains the method in plain language, walks through a manual calculation, and gives worked examples you can follow — then you can do it instantly with the Snow Load Calculator.
What is Snow Load?
The Snow Load calculation tells you your snow load from a few simple inputs. The figure you are solving for here is the snow load.
The Snow Load formula
The core formula is:
Snow load = Snow depth ÷ 100 × Snow densityHere is what each input means:
- Snow depth — a value measured in cm. Example: 30 cm.
- Snow density — a value measured in kg/m³. Example: 300 kg/m³.
How to calculate it step by step
- Write down the snow depth (for example, 30 cm).
- Write down the snow density (for example, 300 kg/m³).
- Apply the formula above to get your snow load.
- Double-check the result with the Snow Load Calculator.
Worked examples
Example 1
| Input / Output | Value |
|---|---|
| Snow depth | 30 cm |
| Snow density | 300 kg/m³ |
| Snow load | 90.0 |
With snow depth of 30 cm and snow density of 300 kg/m³, the snow load works out to 90.0.
Example 2
With snow depth of 60 cm and snow density of 300 kg/m³, the snow load works out to 180.0.
| Result | Value |
|---|---|
| Snow load | 180.0 |
Example 3
With snow depth of 15 cm and snow density of 300 kg/m³, the snow load works out to 45.0.
| Result | Value |
|---|---|
| Snow load | 45.0 |
Tips for an accurate result
- Keep your units consistent — mixing, say, months with years or grams with kilograms is the most common source of error.
- Round only at the very end. Rounding inputs early can shift the final answer noticeably.
- Re-run the numbers whenever an input changes, rather than estimating from an old result.
Prefer not to do the maths by hand? — the Snow Load Calculator does it instantly, for free, with the formula and a worked example built in.
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