Frequently asked questions

Is the calculator free to use

Yes, the calculator on the homepage is free with no account or email required. It covers nine materials and lets you enter multiple zones for L-shaped or multi-section areas.

How accurate is the weight estimate

The weight shown is an estimate based on standard dry density figures for each material. Real weight can vary with moisture content and the specific product a supplier carries, so the figure is meant for planning delivery capacity and truck or trailer limits, not as an exact invoice weight.

Why does the same area need a different amount of gravel than mulch

Volume, cubic yards or cubic feet, only depends on area and depth, so it is the same for any material at the same measurements. Weight depends on density, and gravel is roughly seven times denser than wood mulch, which is why the tool calculates weight separately for each material rather than using one number for everything.

What is the difference between the free cheat sheet and the paid planner

The Depth Cheat Sheet is a one page printable reference covering recommended depths and typical coverage, free after providing an email address. The Landscape Material Planner is a paid, more complete document with coverage tables for all nine materials, a weight reference, an irregular bed measuring method, a budget grid by zone, a delivery checklist, and a bagged versus bulk comparison.

How do I measure an L-shaped or irregular bed

Split the shape into two or more simpler rectangles or circles and enter each as its own zone in the calculator; the tool adds the zones together automatically. The same approach is explained step by step in The Landscape Material Planner.

Should I buy bagged or bulk material

For small areas, generally under about one to two cubic yards, bagged material is usually more convenient despite a higher per cubic foot price, since it avoids bulk delivery minimums and is easier to carry and store. Past that range, bulk delivery is usually cheaper once delivery fees are compared against the bagged total; see how many bags of mulch in a cubic yard for the exact bag math.

Where do I download The Landscape Material Planner after purchase

The download link is provided immediately after a successful payment and also sent by email. See the files page and the order page for details.

Field procedure before you order

Measure after edging is marked, not from memory or from an old plan. Use a tape measure for each straight run and write dimensions to the nearest 0.5 ft. For curved beds, place flags or stakes about every 4 ft to 6 ft along the edge, then split the bed into short rectangles or triangles. This usually keeps the volume error under about 10 percent for a typical home bed.

Check depth with the finished surface in mind. For a 2 inch mulch layer over existing mulch, first scrape one small test spot down to soil and measure how much old material remains. If 1 inch of old mulch is still sound, ordering for another 2 inches may raise the bed edge too high against turf, walkways, or siding. Leave at least 2 inches of visible foundation or siding clearance after the material is placed.

Before entering numbers, decide whether the measured depth is the compacted finish depth or the loose placement depth. Gravel settles less than mulch under normal foot traffic, but both can lose height during raking and wetting. A practical allowance is to order about 5 percent extra for gravel paths with many edges and about 10 percent extra for mulch beds with shrubs, exposed roots, and hand spreading.

Use a 25 ft or 50 ft tape measure for beds, not only a phone map or aerial image.
Use marking paint, flags, or stakes before measuring irregular boundaries.
Use a straight board and ruler to check depth while spreading, especially beside walks and patios.
Keep a wheelbarrow route at least 30 inches wide if bulk material is dumped away from the work area.
Take one photo of the marked area and one photo of the delivery location before ordering.

Reference figures for common site checks

The calculator handles the volume math, but site limits often decide whether the plan is practical. A cubic yard is 27 cubic feet, so even a small depth change can move the order by several bags or by a noticeable part of a bulk delivery. For a quick review, compare the planned depth with the table below before finalizing the quantity.

Job condition	Figure to check	Why it matters
Mulch against house	Keep finished mulch below siding and weep holes by at least 2 inches	Reduces trapped moisture and makes inspection easier
Gravel walkway	Common walking width is 36 inches to 48 inches	A narrow path may look acceptable on paper but feel tight with a wheelbarrow
Wheelbarrow moving distance	Over 75 ft each way becomes slow for one person	Labor time can exceed spreading time when the dump spot is far away
Bag handling	A single person can often move 30 to 50 bags in stages, but fatigue changes accuracy	Later bags are more likely to be dumped unevenly
Bulk pile footprint	Plan several feet of clear space around the pile for shoveling	A pile placed tight to a wall, fence, or car is harder to load cleanly

For depth control, set a few temporary gauge sticks before work starts. Mark 2 inches, 3 inches, and 4 inches on scrap wood, then place the stick vertically on the soil or base layer while raking. This is faster and more reliable than judging depth by eye across a large bed.

Frequent mistakes and recovery steps

The most common measuring mistake is mixing inches and feet. A depth entry of 3 ft instead of 3 inches changes the order by a factor of 12. If the result looks far larger than expected, check the depth unit first, then check whether all zones were entered only once. The FAQ page can be used as a baseline when comparing general calculator behavior.

If too little material was ordered, do not spread the first load thin across the whole property. Finish the most visible or highest priority zone at the correct depth, then measure the unfinished area again. This avoids a shallow layer everywhere, which is difficult to correct evenly later. For mulch, a thin correction layer can be blended with a rake. For gravel, the repair is easier if the first layer has not been compacted or heavily walked on.

If too much material was ordered, keep it clean and separated from soil. Extra mulch can be placed in a low mound on a tarp and used later to refresh bare spots. Extra gravel should be stored where runoff will not carry fines into drains or turf. Do not push unused gravel into planting soil unless the bed was designed for that drainage change.

If delivery is placed in the wrong spot, move the material before it spreads into grass or mixes with mud. A flat shovel works better on pavement, while a square transfer shovel works better on compacted soil. For gravel, scraping the last inch from asphalt or concrete can pick up debris, so stop early and sweep the remainder into a separate container if cleanliness matters.

Special cases that need extra attention

Sloped beds need a different check than flat beds. Measure the surface area along the slope if the grade is noticeable, not only the flat map distance. On a mild slope this may change little, but on a steep bank the true surface can be 5 percent to 15 percent larger than the overhead footprint. Mulch on slopes also needs a conservative depth because thick loose layers can slide during heavy rain.

Tree rings should not be treated as simple circles if the trunk flare is covered or if roots are exposed. Keep mulch pulled back from the trunk, and measure only the ring area that will actually receive material. For a ring with an outside radius of 4 ft and an inside no mulch radius of 1 ft, the covered area is the large circle minus the small circle, not the full 4 ft circle.

Raised beds, planters, and containers need inside dimensions, not outside board dimensions. A box framed with thick lumber can lose several inches in both length and width. Measure from the inside face to the inside face, then confirm whether the fill depth stops below the rim. Leaving 1 inch to 2 inches below the top edge reduces spillover during watering.

For renovation work, remove loose debris before measuring depth. Leaves, old landscape fabric folds, and mounded soil can make a bed look full while still needing material after cleanup. If fabric is exposed or torn, repair that layer before gravel is placed, because fixing it later usually requires removing the new stone.