TryBuildCalcTurf Calculator (Square Metres) (Metric Slabs / Turf Rolls)
Size your turf order in square metres instantly.
🕒 Last updated: September 21, 2026
Inputs
ℹ️Total lawn area to be sodded or turfed.
Sod Source
ℹ️1 m² is the most common UK/AU turf roll size — confirm with your supplier, since exact dimensions vary by grower.
Cost
Sod Needed
53 slabs
1 m² — standard UK/AU turf roll (≈0.61m x 1.64m)
Lawn Area
538.2 sq ft
50 m²
Order Area
Lawn area: 538.2 sq ft (50 m²)
Order area (+5% cutting/edge waste): 565.11 sq ft
52.5 m²
Slabs
Slab size: 10.76 sq ft (1 m²)
Slabs needed: 53
Assumptions Used
Order area adds a 5% cutting/edge-fitting waste allowance on top of the bare lawn area — this covers scrap from trimming pieces to fit curves, corners, and obstacles, not settling (sod doesn't settle the way loose fill volume does). A heavily irregular or obstacle-dense lawn commonly needs more than this default; consider padding your entered area for those cases. Roll, pallet, and slab sizes are genuinely supplier- and grass-species-dependent (no single fixed industry standard exists for any of the three) — the presets offered are commonly cited reference figures, not guarantees; confirm exact sizes with your supplier before ordering. This calculator estimates material quantity only — it does not verify soil preparation, grading, or irrigation readiness.
Diagram simplified for clarity (not to scale) — lawn area shown schematically, sod grid shown illustratively.
Looking for the verification checklist, reference tables, tips, or common mistakes?See the complete Sod / Turf Calculator.
Turf order in square metres
In the UK, AU, and much of Europe, turf is sold by the slab or turf roll sized in square metres rather than by the US sq-ft roll — a standard turf roll most commonly covers around 1 m².
This page defaults to a 50 m² lawn area with a 1 m² standard turf roll — edit the inputs above to match your actual lawn size and your supplier's confirmed roll dimensions, since these vary slightly by grower.
Sod / Turf Calculator Formula: How Is It Determined?
Lawn area combines with a waste allowance into an order area, which then converts into a roll, pallet, or slab count.
Step 1 — Lawn Area
By Dimensions: Area = Length x Width
By Total Area: Area = entered value (converted to sq ft if entered in m²)
Either enter a rectangular lawn's length and width, or enter its total area directly — useful for an irregular lawn where length x width doesn't apply.
Step 2 — Order Area
Order Area = Lawn Area x (1 + 5% cutting/edge waste)
The 5% allowance covers scrap from trimming pieces to fit curves, corners, and obstacles — this is a cutting allowance, not a settling allowance, since sod doesn't settle the way loose fill volume does.
Step 3 — Roll / Pallet / Slab Count
Units Needed = ceil(Order Area / Unit Size)
Unit size is stored as a canonical sq ft figure internally, so US roll/pallet sizes (sq ft) and UK/AU slab/turf-roll sizes (m²) come from the same underlying calculation, or enter a custom unit size in either unit.
Worked Example
This example walks through your current inputs above, using the same steps as the Formula section.
Input Values Used
| Input | Value | Why it is used |
|---|---|---|
| Lawn Area | 538.2 sq ft (50 m²) | Sets order area |
| Sod Source | Slabs / Turf Rolls (Metric) | Sets unit count divisor |
| Slab / Turf Roll Size | 1 m² — standard UK/AU turf roll (≈0.61m x 1.64m) — 1 m² | Sets the slab-count divisor |
Step 1 & 2 — Area
| Calculation | Result |
|---|---|
| Lawn Area | 538.2 sq ft (50 m²) |
| Order Area = Lawn Area x (1 + 5%) | 565.11 sq ft (52.5 m²) |
Step 3 — Slabs / Turf Rolls
| Calculation | Result |
|---|---|
| Slabs = ceil(565.1 / 10.8 sq ft per slab) | 53 slabs |
Figures above are rounded for display; the roll/pallet/slab count is always calculated from full, unrounded values, so it can occasionally look off by one unit if you redo the division yourself using the rounded figures shown.
Therefore, a 538.2 sq ft lawn needs approximately 53 slabs of sod.
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Disclaimer: This calculator provides approximate results for planning and estimation purposes only. Actual requirements may vary based on site conditions, materials, workmanship, and local building regulations. Always consult a qualified engineer, architect, or construction professional before making final decisions.