MC360 // Landscaping & Grounds
ROLL OUTTHE NEW LAWN.
How many seed mat rolls do I need? A standard 4×50 ft roll covers 200 square feet — but overlaps eat 10% of that. Enter the area and roll size; the calculator returns roll count and the stakes to pin it down, slopes included.
The Instrument
The Grass Seed Mat Calculator, up close
Inputs
Outputs
Opens the live calculator on matcalc360.pro
Run your own numbersProcess
Three steps. Zero guesswork.
Enter your measurements
Length, width, depth, pitch — the numbers you already pace off on site. No blueprints, no signup, no spreadsheet.
Calculate materials
The calculator applies the right formulas, density factors and waste allowances for your specific material.
Get your results
Squares, yards, tons, boards or sheets — a clean order list you can hand straight to the supplier.
Field Guide
SEED BLANKETS: ROLLS, OVERLAP AND STAKES
Rolls cover less than the label
A 4×50 ft roll is 200 square feet on paper, but edges overlap 3–4 inches and ends tuck — plan 10% overlap in every estimate. A 600 sq ft slope therefore takes four rolls, not three. The calculator builds the overlap in automatically.
- 4×50 roll = 200 ft² nominal
- Plan 10% for overlap
- Odd shapes add another 5%
Where mats beat loose straw
Seed mats and erosion blankets shine where loose cover fails: slopes, swales, windy sites and small patches. The biodegradable netting holds seed and fiber in place through watering and storms — no tackifier, no netting, no chasing straw across the yard.
- Slopes and swales: mat wins
- Windy sites stay covered
- No separate netting needed
Stake it or lose it
Every seam, edge and roll end gets a landscape stake every 2–3 feet — roughly 15 stakes per roll on flat ground, more on slopes. Then water daily until germination: the mat holds moisture, but it cannot create it.
- ≈ 15 stakes per roll, flat
- More stakes on slopes
- Daily water until sprout
Keep calculating
ONE ROLL COVERS
200 ft²
at 4×50 ft before overlap — the unit behind every seed blanket order
Related Calculators
Keep the takeoff going
FAQ
Questions from the field
Straight answers on units, waste factors and ordering — the details that decide whether the job finishes on the first delivery.
Ready when you are
STOP GUESSING.START BUILDING.
Free. No signup. Built for the jobsite.