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Artificial Grass Calculator

Work out artificial grass rolls, base aggregates, tape, adhesive and pins for any UK lawn.

Inputs

Auto picks the least-waste mix of 2 m and 4 m rolls. Lock to one width if your supplier only stocks it.

4 advanced inputs hidden. Switch to Advanced to fine-tune.

Confidencehigh· 82Complexitylow· 22
Recommended cutting plan
1 × (4 m × 3.0 m) + 1 × (2 m × 3.0 m) — 18.0 m² ordered for 15.0 m² lawn, ~20% waste, 1 seam

Order what you need for this job

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Heads-up: Your widest run is 5.0 m — rolls are 4 m wide, so you'll have a seam. Plan it where foot traffic crosses the seam, not along it, and use joining tape + adhesive — not just pins. Why it matters: Sand infill (kiln-dried) is mandatory for pets, kids and high-traffic — without it the pile flattens within months and the grass slides on the base.

Quantities pre-filled from your calculation (15.0 m²). Partner links — we may earn a small commission if you buy, at no cost to you.

Essentials for this job

Quantities include a ~10% waste allowance. Guide prices are indicative UK ranges (materials only, inc. VAT) — always confirm with the supplier before ordering.

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Ad · Some links are sponsored. We may earn a small commission at no extra cost to you. Suppliers are chosen for fit, not commission.

This app provides general UK guidance and material estimates only. It is not legal, planning, engineering or building-control advice. Always confirm requirements with your local planning authority, building control, utility providers, manufacturers or qualified professionals.

New to artificial grass?

Our step-by-step guide covers laying fake turf on grass, soil or concrete, base prep, joining, pinning and infill.

Read the laying guide

Worked example

A 6.0 m × 4.0 m rear lawn in premium artificial grass.

Inputs

Grass type
Premium
Area
6.0 m × 4.0 m
Roll width
Chosen automatically
Step by step calculation for this example
StepWorkingResult
Area6.0 m × 4.0 m24 m²
Cutting planfit the lawn to 2 m and 4 m roll widths1 × (4 m × 6.0 m) — 24.0 m² ordered for 24.0 m² lawn, ~0% waste, 0 seams
Grass orderedroll pieces, squared off to full roll width24 m²
Wastegrass ordered vs lawn area0 %
Sub-basegranite dust blinding over compacted stone1.48 t
Infill24 m² × 3 kg/m² of kiln-dried silica sand72 kg
What to order for this example
What to orderQuantity
Recommended cutting plan1 × (4 m × 6.0 m) — 24.0 m² ordered for 24.0 m² lawn, ~0% waste, 0 seams
Grass ordered24 m²
Roll waste0 %
Seams0
Granite dust1.48 t
Sharp sand1.06 t
Silica infill72 kg
U-pin packs1

In short: Order 24 m² of grass (0 % waste, 0 seams), 1.48 t of granite dust, 1.06 t of sharp sand and 72 kg of silica infill.

How this calculator works

Enter your lawn's length and width and the calculator plans rolls (artificial grass comes in fixed 2 m and 4 m widths) to fit your shape with the fewest joins and least waste. It also sizes the sub-base and laying-course aggregates, plus joining tape, adhesive and pins , so the whole job lands in one order. For the full method on building the base, joining rolls and brushing in infill, see the how to lay artificial grass guide.

Need the sub-base worked out too?

Estimate MOT Type 1 tonnes and bulk bags for the base under your lawn.

Open MOT Type 1 Calculator

Link to this tool

Found this useful on your site, blog or forum post? Copy the snippet below.

<a href="https://gardensurveyor.com/artificial-grass-calculator">Artificial grass calculator: rolls, joints and waste</a>

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