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Marble chip chart calculator
Put your area, depth and waste allowance in: 600 square feet at 2 inches with 10% waste needs 660.00 square feet, 4.07 cubic yards exact, order 5 cubic yards.
★ CONSTRUCTION · MATERIALS · MARBLE CHIP CHART
Marble Chip Chart: 5 Cubic Yards for 600 Sq Ft at 2 Inches
On the defaults — 600 square feet at 2 inches deep with a 10% waste allowance — you need 660.00 square feet of coverage, 4.07 cubic yards exact, so order 5 cubic yards of marble chips. This is the MARBLE CHIP version of the coverage chart — the granite-chip-chart page is the GRANITE CHIP version — 500 square feet at 2 inches with 10% waste; the basalt-chip-chart page is the BASALT CHIP version — 500 square feet at 3 inches with 10% waste; the slate-chip-chart page is the SLATE CHIP version — 400 square feet at 3 inches with 10% waste; and the pea-gravel-chart page is the PEA GRAVEL version — 300 square feet at 3 inches with 10% waste.
What does 4.07 cubic yards of marble chips mean?
It means that a 600-square-foot bed at 2 inches deep needs 660.00 square feet of coverage once a 10% waste allowance is added, and one cubic yard of marble chips covers 162 square feet at that depth, so the exact figure is 4.07 cubic yards and the order is 5 cubic yards. The two steps are the whole story in miniature: the waste step grows the area first, and the coverage step turns that grown area into cubic yards. The part people get wrong is ordering the exact figure: a supplier delivers whole yards, and 4.07 yards ordered as 4 leaves the last stretch of bed thin, which is why the order is always rounded up. The other part people get wrong is the reverse — measuring the bed after edging is in, which shrinks the measured area and understates the order by exactly the edging strip.
Three things to check before you trust the number
Is 600 square feet really the bed, or the whole garden? Six hundred square feet is the ground the marble chips actually cover, and it is the figure the order turns on: the 800-square-foot branch orders 6 cubic yards against the 5-yard headline, so a 200-square-foot measurement difference is a full extra yard. Measure length times width of the bed itself, and leave paths, lawn and planting holes out of it — a bed measured with its surroundings priced in orders chips for ground that never gets any.
Is 2 inches really the depth, or the depth after settling? Two inches is the finished layer depth, and it is the figure the coverage turns on: the 3-inch branch orders 7 cubic yards against the 5-yard headline, so one extra inch is two extra yards at this size. Chips settle and wash into the soil over the first season, so if the bed must still be 2 inches after settling, start a little deeper or plan a top-up — a depth measured on fresh, loose chips reads deeper than the bed ends up.
Is 10% waste really needed, or is the ground flat? Ten percent is the allowance for spreading loss, uneven ground and edging gaps, and it is the figure the needed area turns on: the 0%-waste branch orders 4 cubic yards against the 5-yard headline, so the waste line is worth a full yard here. Use 0% only for a perfectly flat, freshly measured bed with tight edging — on a slope, around trees, or with a long wheelbarrow haul, the full 10% is the honest figure.
Worked example
On the defaults: 600 square feet, 2 inches deep, 10% waste.
- Coverage per cubic yard: 324 ÷ 2 is 162 square feet.
- Needed area: 600 × 1.10 is 660.00 square feet.
- Exact cubic yards: 660.00 ÷ 162 is 4.07.
- Order: 4.07 rounded up is 5 cubic yards — never rounded down.
And the other way: the area behind 4.07 cubic yards is 600 square feet, the depth behind 4.07 cubic yards is 2 inches, and the waste behind 4.07 cubic yards is 10%. With 0 square feet the model honestly shows 0.00 cubic yards and an order of 0, because a bed with no area needs no marble chips — an edge that shows the area is entered independently of the depth. And 162 square feet at 2 inches with 0% waste lands exactly on 1.00 cubic yard and orders exactly 1, not 2, because an exact integer is already a whole load.
Marble chip lookup table
Every row below is the same model at 10% waste: needed area is the area times 1.10, coverage is 324 divided by depth, and the order is the exact figure rounded up. Find your area and depth, read across, and order the figure in the last column — do not round down, because a short load leaves the bed thin at the far end.
| Area (sq ft) | Depth (inches) | Needed area (sq ft) | Exact cubic yards | Order |
|---|---|---|---|---|
| 100 | 1 | 110.00 | 0.34 | 1 cubic yard |
| 100 | 2 | 110.00 | 0.68 | 1 cubic yard |
| 100 | 3 | 110.00 | 1.02 | 2 cubic yards |
| 100 | 4 | 110.00 | 1.36 | 2 cubic yards |
| 250 | 1 | 275.00 | 0.85 | 1 cubic yard |
| 250 | 2 | 275.00 | 1.70 | 2 cubic yards |
| 250 | 3 | 275.00 | 2.55 | 3 cubic yards |
| 250 | 4 | 275.00 | 3.40 | 4 cubic yards |
| 500 | 1 | 550.00 | 1.70 | 2 cubic yards |
| 500 | 2 | 550.00 | 3.40 | 4 cubic yards |
| 500 | 3 | 550.00 | 5.09 | 6 cubic yards |
| 500 | 4 | 550.00 | 6.79 | 7 cubic yards |
| 750 | 1 | 825.00 | 2.55 | 3 cubic yards |
| 750 | 2 | 825.00 | 5.09 | 6 cubic yards |
| 750 | 3 | 825.00 | 7.64 | 8 cubic yards |
| 750 | 4 | 825.00 | 10.19 | 11 cubic yards |
Every branch, checked
- 600 square feet, 2-inch depth, 0% waste: 600 square feet, 2-inch depth, 0% waste: 3.70 cubic yards exact — order 4 cubic yards.
- 600 square feet, 3-inch depth, 10% waste: 600 square feet, 3-inch depth, 10% waste: 6.11 cubic yards exact — order 7 cubic yards.
- 800 square feet, 2-inch depth, 10% waste: 800 square feet, 2-inch depth, 10% waste: 5.43 cubic yards exact — order 6 cubic yards.
- 300 square feet, 2-inch depth, 10% waste: 300 square feet, 2-inch depth, 10% waste: 2.04 cubic yards exact — order 3 cubic yards.
The reverses, worked backwards
- Area behind 4.07 cubic yards: 600 sq ft — at 600 sq ft the figures are 4.07 cubic yards exact — order 5 cubic yards.; at the lower neighbor the figures are 3.73 cubic yards exact — order 4 cubic yards.; at the upper neighbor the figures are 4.41 cubic yards exact — order 5 cubic yards..
- Depth behind 4.07 cubic yards: 2 inches — at 2 inches the figures are 4.07 cubic yards exact — order 5 cubic yards.; at the lower neighbor the figures are 3.06 cubic yards exact — order 4 cubic yards.; at the upper neighbor the figures are 5.09 cubic yards exact — order 6 cubic yards..
- Waste behind 4.07 cubic yards: 10% waste — at 10% waste the figures are 4.07 cubic yards exact — order 5 cubic yards.; at the lower neighbor the figures are 3.89 cubic yards exact — order 4 cubic yards.; at the upper neighbor the figures are 4.26 cubic yards exact — order 5 cubic yards..
What the defaults assume
The defaults are 600 square feet at 2 inches with 10% waste, so the headline is one garden bed with a shallow decorative layer and a standard waste allowance. The model is a division and a rounding: coverage is 324 divided by depth in inches, needed area is area times the waste factor, exact yards are needed area divided by coverage, and the order is the exact figure rounded up. The area reverse is checked at 50 square feet either side, because 50 square feet at 2 inches with waste is about 0.34 yards; the depth reverse is checked at 0.5 inches either side, because half an inch at this size is about a yard; the waste reverse is checked at 5% either side, because 5% of 600 square feet is 30 square feet. The model does not include delivery minimums, compaction after rain, or the weight limit of the delivery truck — check those with the supplier, and re-measure the bed when the edging moves.
Output · formula · meaning
| Output | Formula | What it means |
|---|---|---|
| Coverage per cubic yard | 324 ÷ depth in inches | 162 sq ft — 324 ÷ 2, one cubic yard covers 162 square feet at 2 inches. |
| Needed area | area × (1 + waste ÷ 100) | 660.00 sq ft — 600 × 1.10. |
| Exact cubic yards | needed area ÷ coverage per cubic yard | 4.07 — 660.00 ÷ 162. |
| Order | exact cubic yards rounded up | 5 cubic yards — 4.07 rounded up, never down. |
| 600 square feet, 2-inch depth, 0% waste | same model | 3.70 cubic yards exact — order 4 cubic yards. |
| 600 square feet, 3-inch depth, 10% waste | same model | 6.11 cubic yards exact — order 7 cubic yards. |
| 800 square feet, 2-inch depth, 10% waste | same model | 5.43 cubic yards exact — order 6 cubic yards. |
| 300 square feet, 2-inch depth, 10% waste | same model | 2.04 cubic yards exact — order 3 cubic yards. |
| Area behind 4.07 cubic yards | reverse | 600 sq ft: 4.07 cubic yards exact — order 5 cubic yards. |
| Depth behind 4.07 cubic yards | reverse | 2 inches: 4.07 cubic yards exact — order 5 cubic yards. |
| Waste behind 4.07 cubic yards | reverse | 10% waste: 4.07 cubic yards exact — order 5 cubic yards. |
| 0 square feet | same model | 0.00 cubic yards exact — order 0 cubic yards. |
| Negative area | same model | Area — 0 or more. |
| Zero depth | same model | Depth — more than 0. |
| Negative waste | same model | Waste allowance — 0 or more. |
| 162 square feet, 0% waste | same model | 1.00 cubic yards exact — order 1 cubic yard. |
Who uses this
- A homeowner ordering marble chips for a bed — 600 square feet at 2 inches with waste are 5 cubic yards, with the lookup table covering other bed sizes without a second calculation.
- A landscaper quoting a marble chip job — the branches price a deeper layer or a bigger bed at once, so a quote change can be costed before the customer is called.
- A garden designer costing a path or border — the depth reverse shows what an extra half inch costs in yards, so a design change can be judged in material, not just in looks.
- A supplier checking a customer order — the reverses recover the area, depth or waste behind any quoted yardage, so a short or generous order can be spotted before the truck leaves.
Accuracy & limitations
Figures are the model’s own arithmetic on the numbers you type, computed from unrounded values and displayed rounded HALF_UP to 2dp, with the order rounded up to whole yards. The main limitation is the inputs, not the arithmetic: whether the area is the bed alone or the bed plus its surroundings, whether the depth is finished or freshly spread, and whether the waste allowance fits the ground are all judgement calls, and this page prices the figures you enter without checking them. This page is a calculation tool, not landscaping advice.
Cite this calculator
Marble chips for 600 sq ft at 2 inches with 10% waste need 660.00 sq ft, 4.07 cubic yards exact, order 5 cubic yards, plus a 16-row lookup table. Source: Bright Side Kit, https://brightoolbox.com/marble-chip-chart/, accessed 29 October 2026.
Frequently asked questions
What are marble chips used for in a garden bed?
As a bright, hard-wearing ground cover: they suppress weeds, hold moisture in the soil, and keep beds looking finished without yearly mulching. White marble chips also reflect heat, which suits sunny beds but can scorch delicate plants if the bed faces full afternoon sun.
How deep should a marble chip bed be?
Two inches is the usual decorative depth: enough to hide the soil and block most weeds, without burying plants or wasting material. Paths and parking strips that take foot or wheel traffic usually need 3 to 4 inches, and every extra inch at 600 square feet is roughly another 2 cubic yards once waste is added.
Why order 5 cubic yards when the exact figure is 4.07?
Because suppliers deliver whole yards, and rounding down leaves the bed short: 4 yards cover about 648 square feet at 2 inches, which is 12 square feet short of the 660 needed. The order is always the exact figure rounded up, so the last stretch of bed is covered, not thin.
Do I need the 10% waste allowance?
On most real beds, yes: spreading loss, uneven ground, edging gaps and the odd wheelbarrow spill all eat into the load. Use 0% only for a perfectly flat, freshly measured bed with tight edging; on a slope, around trees, or with a long haul, the full 10% is the honest figure, and it is worth a full yard at this size.
What if my supplier sells by the ton, not the yard?
Ask the supplier for the tons-per-yard of their marble chips — it varies by chip size and quarry — and multiply: 4.07 cubic yards times their tons-per-yard is the tonnage. Do not guess the conversion, because a wrong tons-per-yard figure moves the order by whole tons.
Do marble chips compact after delivery?
Yes, a little: fresh chips settle into the soil and each other over the first season, so a bed spread at exactly 2 inches can read closer to 1.5 inches a year later. If the bed must stay at 2 inches, spread slightly deep at the start or plan a small top-up, and re-check the depth before ordering a second load.