What this tool is for
Roofing Calculator is built for daily planning inside daily calculators when you need to turns roof area and waste into shingle bundles. It focuses on roofing instead of making you adapt a broad calculator to a narrow task.
When to use it
Use it when roof area and waste are already known and you want a fast estimate before comparing options, checking a worksheet, or copying the result into another workflow.
Inputs
- Roof area describes the size or distance used in the calculation. Use sq ft for this field.
- Waste controls the percentage part of the roofing calculation. Use % for this field.
Formula
bundles = area x (1 + waste) / 33.3
Example
1,200 sq ft with 10% waste needs about 39.64 bundles.
What the result means
The result labeled "Roofing" is the direct output of bundles = area x (1 + waste) / 33.3. In the worked example, 1,200 sq ft with 10% waste needs about 39.64 bundles.
Before you rely on the result
Use the result for quick planning. Real-world prices, time, people, mileage, and habits can shift the final number.