Estimate snow load from snow depth, snow density, roof area, and roof pitch. This calculator shows snow load in pounds per square foot, kilograms per square meter, total pounds, total kilograms, and estimated snow water equivalent.
Snow depth:
Enter the snow depth on the roof or surface.
Snow density:
Select the snow type or enter a custom density in pounds per cubic foot.
Roof area:
Enter the surface area carrying the snow load.
Roof pitch factor:
A slope factor can reduce the simple estimate for steeper roofs where snow is less likely to stay evenly in place.
A snow load calculator is useful for estimating roof snow weight, surface load, snowpack weight, storm cleanup planning, shed roofs, decks, carports, barns, and general winter weather planning.
For real structural safety, permits, building design, or roof concerns, use local building codes and contact a licensed structural professional.
Your result estimates the weight of snow per square foot and the total snow weight over the selected area. Higher depth, wetter snow, ice buildup, drifting, or packed snow can greatly increase the load.
Multiply snow depth in feet by snow density in pounds per cubic foot. Then apply a slope factor if needed.
It depends on density. One foot of average 10 lb/ft³ snow is about 10 pounds per square foot. Wet snow can weigh much more.
Yes. Wet snow contains more water and can weigh several times more than dry fluffy snow.
No. This is a rough estimating tool. Structural safety should be checked using local building codes and professional engineering guidance.