Geotextile Roll Coverage Calculator
Convert measured rectangular areas into an explicit fabric-strip layout, gross cut fabric, whole-roll purchase quantity, and optional local cost.
Part of the Landscaping & Site Work calculators — see all tools in this category.
Geotextile roll coverage estimate
Lay out rectangular fabric zones as actual strips, then see gross cut fabric, whole rolls, and any unpriced purchase line.
Preparing calculator controls…
| Zone 1 | 2 strips × 10 m; 40 m² gross / 38 m² net |
|---|---|
| Purchased rolls | 1 rolls, 20 m × 2 m |
Current result
Order 1 whole geotextile roll.
- Planned coverage (net)
- 38 m²
- Gross cut fabric
- 40 m²
- Strip linear length before stock rounding
- 20 m
- Actual purchased stock
- 1 whole rolls
Net is the measured rectangular coverage. Gross cut fabric includes strip width, side overlap, and any entered edge extension. This calculator has no percentage allowance: it rounds the strip plan to purchasable roll lengths once. With offcut reuse off, each zone rounds independently; with it on, compatible zones pool before one round-up. Your optional price is USD per actual purchased roll; a blank price is not $0. End joins and end laps are not calculated—if a strip is longer than the roll, split the zone or use a documented project layout.
- Offcut reuse is disabled: each zone is cut and rounded to whole rolls independently; offcuts are not transferred between zones.
- End joins are disabled. A zone requiring a strip longer than one roll is rejected rather than estimated with an unstated lap formula.
| Material | Net need | Order quantity |
|---|---|---|
| User-specified geotextile roll | 40 m² (ordered) | 40 m² (ordered) (1 packs) |
No prices entered
Cost breakdown
No prices entered. This is not a completed zero-cost estimate.
| Line | Purchased quantity / unit / basis | Pricing state | Direct price | Entered line tax |
|---|---|---|---|---|
| Geotextile rolls | 1 count (ordered) | Not priced | — | — |
- Direct priced subtotal
- $0.00
- Selected contingency base
- $0.00
- Contingency rate
- 0%
- Contingency amount
- $0.00
- Before-tax total
- $0.00
- Entered line tax
- $0.00
- Contingency tax (not entered)
- $0.00
- Final total unavailable — enter a price to begin the estimate
- —
Missing price categories: Geotextile rolls.
Cost by category
No entered prices to chart.
| Category | Cost | State |
|---|---|---|
| Geotextile rolls | Not priced | not-priced |
How it works and assumptions
Enter each rectangular coverage zone, choose which dimension each unjoined strip follows, then enter the roll dimensions and the overlap you intend to use. The calculator lays out strips instead of dividing area by a roll area, so it can show the gross cut and whole-roll rounding.
Use the patio bedding, edging, and fabric takeoff guide to keep strip layout separate from material selection and installation decisions. Its companion patio material-order and budget guide explains how to record the whole-roll order without combining it with unrelated quantities.
Worked example
A separate synthetic example appears in the calculator panel: the 10 m × 3.8 m zone needs two 10 m strips from a 2 m × 20 m roll. It is a counting example, not an overlap, material-grade, or installation recommendation.