Roofing unit converter
Every roofing conversion in one place. Pick a category, choose your from and to units, and enter a value. Conversions are grouped by what they measure — area, length, pitch, shingles, underlayment, and edge accessories — so every pairing is real.
Everything it converts
| Category | Units |
|---|---|
| Area | roofing squares · sq ft · m² · sq yd · sq in · acres |
| Length | feet · inches · yards · metres · cm (for eave, rake, ridge, valley) |
| Roof pitch | rise:12 · degrees · percent grade · slope multiplier |
| Shingles | squares · bundles (by type) · sq ft · pieces |
| Underlayment | sq ft · squares · rolls (synthetic / 15 lb / 30 lb) |
| Edge accessories | linear feet · starter bundles · ridge cap bundles · drip edge sticks |
Why conversions are grouped
Roofing units measure different things, and not every unit converts into every other. A pitch in degrees has no meaningful conversion to bundles of shingles, and bundle counts depend on whether the shingle is 3-tab (3 per square) or architectural (4 per square). Grouping by category keeps every result honest instead of letting you pick a pairing that produces a fabricated number. The material and accessory figures — 33.3 sq ft per bundle, 120.33 linear feet per starter bundle, 25 per ridge bundle, 10 ft per drip-edge stick, roll coverages — are the same sourced constants the full calculator uses; see the methodology.
Single-purpose pages
Prefer a focused page for one conversion? Each pairing has its own, with a reference table and the formula:
Need a non-roofing unit (general length, weight, temperature, pressure)? Try the universal converter at unitcheatsheet.com.