Shingle Weight Calculation Tool
What is Shingle Weight Calculator?
How a shingle weight calculator works is simple. It is a small tool that finds how much shingles will weigh for a roof.
It uses roof area, bundle coverage, and bundle weight. It then gives total weight. It helps roofers, builders, and homeowners plan lifts and transport. It is easy to use and it saves time.
How to calculate shingle weight for a real roof
Why you should check weight is clear. An engineer is teaching a team now. They measure a roof and show them live. The roof area is 1,200 sq ft. They say a common shingle bundle covers 33.3 sq ft. They also say one bundle weighs 80 lbs.
They want to know how many bundles to buy and the total weight. You can do this by hand or use a calculator. It will avoid wrong lifts and extra trips.
Calculate step by step using a formula
First know the formula.
Number of bundles = Roof area ÷ Bundle coverage.
Total weight = Number of bundles (rounded up) × Weight per bundle.
Now compute.
- Roof area = 1,200 sq ft.
- Bundle coverage = 33.3 sq ft.
- Weight per bundle = 80 lbs.
Divide.
1200 ÷ 33.3 = ?
Calculate in parts.
33.3 × 30 = 999.
33.3 × 6 = 199.8.
Add those: 999 + 199.8 = 1198.8.
So 33.3 × 36 = 1198.8.
Remainder = 1200 − 1198.8 = 1.2.
So you need more than 36 bundles.
Round up to 37 bundles.
Multiply to get weight.
Weight = 37 × 80.
30 × 80 = 2400.
7 × 80 = 560.
Add: 2400 + 560 = 2960 lbs.
So total shingle weight is 2,960 pounds.
This method is clear. It is safe. It is fast. It is useful on site.
FAQs
Q: Can bundle coverage change?
A: Yes. It can vary by shingle type. Always check the pack label.
Q: Do I include roof waste?
A: Yes. Add 10% to 15% for waste, hips, and ridges.
Final Words
A quick trick: Divide area by coverage, then round up and multiply by bundle weight. Using a calculator is faster and reduces error.
