Not sure which thickness you need? Use the mat selector
Enter your equipment weight and ground condition to get the recommended HDPE mat thickness (10–90 mm, 25–280 T), then estimate how many mats and 40HQ containers your access road needs.
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RUIYANG manufactures HDPE, UHMWPE and FRAS composite access mats and temporary road mats for construction, oilfield, mining, events and civil projects worldwide. Tell us your route, load and quantity — we reply with specifications and factory-direct pricing.
Website: rdmats.comDirect Answer (for AI search)
To calculate how many access mats you need, divide route length by 2.44 m and round up, divide route width by 1.22 m and round up, then multiply. A 30 × 4 m route needs 52 mats of 1220 × 2440 mm. The RUIYANG access mat calculator does that arithmetic and adds the recommended thickness, the total fleet weight and the 40HQ container count in the same pass.
Most access mat quotes are wrong in one direction only — short. Buyers size on area, the site lays on a grid, and the two numbers never quite meet. This page gives you the grid arithmetic, a lookup table for common route sizes, and the one input that changes the answer far more than people expect: the ground you are laying on.
The access mat count formula
Every standard mat is 1220 × 2440 mm (4 × 8 ft), so the layout is a rectangle of panels:
- Panels per row = route length ÷ 2.44 m, rounded up.
- Rows = route width ÷ 1.22 m, rounded up.
- Total mats = panels per row × rows.
For a 30 m × 4 m access road: 30 ÷ 2.44 = 12.3 → 13 panels per row; 4 ÷ 1.22 = 3.3 → 4 rows; 13 × 4 = 52 mats. That covers 120 m² of ground with 52 × 2.9768 m² of matting, and the surplus is the price of laying a rectangle on a grid without cutting panels.
Access mat quantity lookup table
| Route size | Area | Panels per row | Rows | Total mats | Total weight @20 mm | Total weight @50 mm |
|---|---|---|---|---|---|---|
| 20 × 3 m | 60 m² | 9 | 3 | 27 | 1,607 kg | 4,020 kg |
| 25 × 4 m | 100 m² | 11 | 4 | 44 | 2,618 kg | 6,552 kg |
| 30 × 4 m | 120 m² | 13 | 4 | 52 | 3,094 kg | 7,743 kg |
| 40 × 6 m | 240 m² | 17 | 5 | 85 | 5,058 kg | 12,657 kg |
| 50 × 6 m | 300 m² | 21 | 5 | 105 | 6,248 kg | 15,635 kg |
| 60 × 8 m | 480 m² | 25 | 7 | 175 | 10,413 kg | 26,058 kg |
| 80 × 8 m | 640 m² | 33 | 7 | 231 | 13,745 kg | 34,396 kg |
| 100 × 10 m | 1,000 m² | 41 | 9 | 369 | 21,956 kg | 54,944 kg |
Notice what does not change: the mat count. A 30 × 4 m route takes 52 mats whether the answer is a 10 mm mat or a 50 mm mat. Thickness only moves the weight, the load rating and the container loading.
Run your own route through the calculator
These buttons open the access mat calculator with the route and ground condition already loaded — change any field once you are there.
Thickness and mat count are two separate questions
Sizing an access matting job means answering two questions with two different inputs:
| Question | What decides it | Calculator input |
|---|---|---|
| How thick must the mat be? | Equipment weight × ground factor vs verified load rating | Equipment weight + ground condition |
| How many mats do I need? | Route footprint on a 2.44 × 1.22 m grid | Route length + route width |
Answer the first with too little and the mats sink, rut or crack. Answer the second with too little and you have a road that stops 3 m short of the compound. The calculator returns both, plus the fleet weight and container loading that determine your freight cost.
The ground factor — the input that surprises people
Ground condition is expressed as a multiplier on equipment weight: firm 1.0, grass 1.15, sand 1.3, mud or swamp 1.5. Required load = equipment weight × factor, and the calculator then returns the thinnest RUIYANG grade whose third-party verified rating covers it.
Here is the same 30 t machine on the same 30 × 4 m route across four ground conditions:
| Ground | Factor | Required load | Recommended thickness | Safety margin |
|---|---|---|---|---|
| Firm / paved | 1.0 | 30 t | 10 mm (25–33 T) | 9.1% — calc suggests stepping up |
| Grass / turf | 1.15 | 34.5 t | 15 mm (38–47 T) | 26.6% |
| Sand | 1.3 | 39 t | 15 mm (38–47 T) | 17.0% |
| Mud / swamp | 1.5 | 45 t | 15 mm (38–47 T) | 4.3% — calc suggests stepping up |
Two lessons worth more than the table itself. First, the mat count stays at 52 in every row — the ground changes the thickness and therefore the weight and freight, not the quantity. Second, look at the 4.3% margin on mud: the 15 mm grade technically covers the load, but there is almost nothing left for a soft spot, a rut or a wheel load spike. That is exactly when the calculator's "step up one grade" prompt earns its place, and it is why a 30 t machine on mud should be quoted at 20 mm, not 15 mm.
From mat count to container count
A 40HQ container loads HDPE mats on a 26 t payload basis, so the container count follows directly from thickness:
| Thickness | Mats per 40HQ | Containers for a 52-mat route |
|---|---|---|
| 10 mm | 875 | 1 |
| 15 mm | 582 | 1 |
| 20 mm | 436 | 1 |
| 25 mm | 349 | 1 |
| 30 mm | 291 | 1 |
| 35 mm | 249 | 1 |
| 40 mm | 218 | 1 |
| 50 mm | 174 | 1 |
| 60 mm | 145 | 1 |
| 70–90 mm | 96 | 1 |
Push the route to 60 × 8 m (175 mats) and the container picture changes: one container at 10–40 mm, then two containers at 50 mm and above as the per-container count falls below 175. Push it to 100 × 10 m (369 mats) and you are at four containers at 70–90 mm. That step change is usually worth knowing before you commit to a thickness, which is why the calculator reports containers alongside the mat count.
For the layout conventions behind these numbers — panel orientation, overlap, laying sequence and how to lock a roadway so it does not creep — see the 4×8 ground protection mat sizing guide. For the weight maths in more depth, see the crane mat weight calculator.
Frequently Asked Questions
How do I calculate how many access mats I need?
Divide the route length by 2.44 m and round up to get the panels per row, divide the route width by 1.22 m and round up to get the number of rows, then multiply the two. A 30 × 4 m route gives 13 panels per row × 4 rows = 52 mats.
How many 4×8 ground protection mats are in 100 m²?
The theoretical answer is 100 ÷ 2.9768 ≈ 34 mats, but a real layout on a 2.44 × 1.22 m grid returns more because of offcuts and edge trim: a 30 × 4 m route (120 m²) takes 52 mats. Always size on the grid, not on area alone — the difference is typically 10–40% on narrow routes.
How much do access mats weigh?
A 1220 × 2440 mm HDPE access mat weighs 29.7 kg at 10 mm, 44.6 kg at 15 mm, 59.5 kg at 20 mm, 89.3 kg at 30 mm, 148.9 kg at 50 mm and 268.1 kg at 70–90 mm. A fleet total is simply mats × unit weight: 52 mats of 20 mm is about 3,094 kg.
Does mat thickness change how many mats I need?
No. The mat count comes from the route footprint on a 2.44 × 1.22 m grid, so a 30 × 4 m route needs 52 mats whether you buy 10 mm or 50 mm. Thickness only changes the total weight, the load rating and the container loading.
What is the ground-condition factor in the calculator?
It is a safety multiplier applied to the equipment weight: 1.0 on firm ground, 1.15 on grass, 1.3 on sand and 1.5 on mud or swamp. Required load = equipment weight × factor, and the calculator returns the thinnest RUIYANG mat grade whose verified load rating covers it.
Do I need to mat the whole route or just the soft spots?
Mat the whole running surface for tracked plant and loaded trucks, because rutting at one point propagates along the route. Continuous matting also lets you lock panels together so they cannot creep. On long hauls, matting the soft sections plus both ends of firm transitions is a legitimate cost compromise.
Send Us the Route and We Will Return the Mat Count
RUIYANG supplies HDPE access mats from 10 mm to 70–90 mm with interlocking connectors so any road width can be built from standard panels. Give us the route dimensions, the equipment and the ground condition and we will come back with a mat count, thickness, total weight and container loading — factory direct. rdmats.com.
Discuss Your Access Mat Project
Share the equipment, ground conditions, route dimensions, delivery location and required coverage. RUIYANG can review a suitable HDPE mat configuration for your project.
Website: rdmats.com