Landscaping Calculators

Planning a landscaping project means answering one question before you pick up a shovel: how much material do you actually need? Whether you are laying a gravel pathway along the side of your house, filling raised garden beds with fresh topsoil, spreading mulch around shrubs, diagnosing runoff from a wet yard, or building a French drain, basin run, or channel-drain branch, every project starts with accurate quantity estimates. Order too little and you stall mid-project waiting for a second delivery. Order too much and you are stuck with expensive leftover piles that take up driveway space for weeks. Our landscaping calculators remove the guesswork by converting your measurements into the exact units that suppliers sell — cubic yards for bulk delivery, tons for weight-priced aggregates, bag counts for smaller pickup-truck runs, and drainage branch counts when the job is no longer just “how much rock.”

Each calculator below is built for a specific material type so the density conversions, waste factors, coverage depths, and buying formats match real-world supplier data. Enter your project dimensions — length, width, desired depth, lawn area, or irrigation layout geometry — and the tool returns a purchase-ready quantity. You can combine multiple areas (rectangular beds, circular tree rings, triangular corner gardens, patch repairs, drainage runs, or drip-ready planting zones) in a single calculation session and see a running total. The results include bulk and bagged options side by side, along with lawn-focused outputs such as seed bags, sod pieces, pallets, and drip-system buying guidance. Use these tools to plan anything from a simple mulch refresh to a full backyard renovation involving gravel bases, decorative stone borders, fresh turf, drainage fixes, and bed irrigation.

If the project is a connected job instead of a one-material question, start with one of the guided planners below. They keep the required path in order, then hand off to the standalone calculators that already power the detailed material takeoffs.

Project Sequence

Bed Refresh Planner

Outline the bed, prep soil, choose mulch or decorative stone, then add planting, edging, fabric, and irrigation details only when you need them.

Step 1
Outline the bed and plan soil prep
Bed outline and soil prep
Step 2
Choose mulch or decorative stone finish
Finish cover
Optional Refinement
Add plant count and spacing if needed
Plant spacing
Add edging takeoff if needed
Edging
Add fabric roll planning if needed
Landscape fabric
Add drip irrigation planning if needed
Drip irrigation
Project Sequence

Lawn Renovation Planner

Measure the lawn, decide whether grade correction needs fill or finish soil, choose seed or sod, then finish with starter-material and watering guidance in one lawn-renovation plan.

Step 1
Measure the lawn and choose the project mode
Lawn measurement
Step 2
Decide whether grade correction needs fill or finish soil
Grade correction
Step 3
Calculate finish soil / lawn soil
Finish soil
Step 4
Choose seed or sod for the finished surface
Seed vs sod
Step 5
Add starter materials for establishment
Starter materials
Step 6
Plan watering / irrigation follow-up
Watering plan
Project Sequence

Yard Drainage Planner

Diagnose the wet area, check runoff and slope, choose the right drainage branch, then finish with discharge planning and surface restoration in one guided sequence.

Step 1
Identify the wet area and what is feeding it
Wet-area diagnosis
Step 2
Estimate catchment and runoff burden
Runoff / catchment
Step 3
Check slope and available drop
Slope / drop
Step 4
Choose the drainage system type
System selection
Step 5
Plan trench excavation and spoil
Trench excavation and spoil
Step 6
Confirm the discharge point
Discharge planning
Step 7
Plan how the surface will be restored
Surface restoration
Project Sequence

Gravel Driveway / Parking Pad / Shed Pad Planner

Measure the footprint, choose the top aggregate, size excavation, decide on separator fabric, carry the same footprint through base and top-course takeoffs, then finish with slope, delivery, and maintenance notes.

Step 1
Measure the footprint and choose the project type
Footprint and project type
Step 2
Choose the surface aggregate family
Surface aggregate choice
Step 3
Estimate excavation and spoil
Excavation and spoil
Step 4
Decide whether separator geotextile is needed
Separator geotextile
Step 5
Calculate the compacted base layer
Compacted base
Step 6
Calculate the top aggregate layer
Top aggregate
Step 7
Check drainage fall and runoff direction
Drainage and slope
Step 8
Plan truckloads and maintenance top-up
Delivery and maintenance

All Landscaping Calculators

Choose a calculator to get started with your landscaping project.

Gravel Calculator

How much gravel do I need?

Calculate cubic yards, tons, and bags for pathways, patios, and drainage bases.

Calculate →

Stone Calculator

How much stone or aggregate do I need?

Calculate aggregate quantities for driveways, retaining wall backfill, and decorative borders.

Calculate →

Mulch Calculator

How many bags or yards of mulch do I need?

Calculate bags and bulk cubic yards for garden beds, tree rings, and walkway borders.

Calculate →

Topsoil Calculator

How much topsoil do I need?

Calculate soil volume for new lawns, raised beds, and garden grading projects.

Calculate →

Sand Calculator

How much sand do I need?

Calculate leveling sand, play sand, and fill sand in cubic yards, tons, and bags.

Calculate →

Sod Calculator

How much sod do I need?

Plan sod pieces, rolls, and pallets for full lawns or patch repairs with waste and supplier-size guidance.

Calculate →

Grass Seed Calculator

How much grass seed do I need?

Estimate seed pounds, bag counts, and overseeding rates using species guidance or product-label coverage.

Calculate →

Artificial Turf Calculator

Which turf roll layout and accessories do I need?

Compare roll widths, seam layouts, weed barrier, base, infill, seam tape, and fastener counts for synthetic grass installs.

Calculate →

Fill Dirt Calculator

How much fill dirt do I need to order?

Plan loose-order cubic yards, approximate tons, and truckloads for pads, low spots, circles, and wedge fills.

Calculate →

Landscape Fabric Calculator

How many rolls and staple packs do I need?

Compare roll widths, seam overlap, and staple counts for gravel beds, weed barriers, and planting zones.

Calculate →

Plant Spacing Calculator

How many plants fit in this bed or run?

Compare row and staggered layouts for beds, hedge lines, and foundation runs while checking mature spread.

Plan layout →

Edging Calculator

How much edging, how many stakes, and what corner allowance do I need?

Turn a planting-bed or open-edge perimeter into sections, coils, stones, stake packs, and connector planning.

Plan edging →

Drip Irrigation Calculator

How much drip tubing, how many zones, and what head assembly do I need?

Plan dripline, emitter tubing, drippers, fittings, and runtime guidance for beds, raised beds, rows, containers, and hedge runs.

Calculate →

French Drain Calculator

How much drain rock, pipe, and fabric do I need?

Size trench excavation, rock, pipe, filter fabric, and gravel-free bundles for yard or foundation drainage.

Calculate →

Runoff Catchment Calculator

What is really feeding this wet area?

Estimate contributing area, runoff burden, and the right drainage family before you size trench or inlet materials.

Check runoff →

Catch Basin & Downspout Calculator

How much pipe and how many fittings does this basin run need?

Count basins, downspout adapters, solid pipe, elbows, branch fittings, and outlet pieces for roof and inlet capture branches.

Plan branch →

Channel Drain Calculator

How many channel sections, outlets, and end caps do I need?

Size hardscape-intercept runs with section counts, outlet layouts, and optional concrete surround allowance.

Plan channel run →

Shared planning utilities

Use these compact utility tools when a landscaping or drainage job needs a quick slope, spoil, spacing, or perimeter check before you jump into the full material takeoff.

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Frequently Asked Questions

Which calculator should I use first? +
Use a guided planner first when the job has connected steps, like a lawn renovation that moves through grade correction, finish soil, seed or sod, starter materials, and watering, or a planting refresh that chains soil, spacing, edging, and cover. Jump straight into a standalone calculator when you already know the single material answer you need, such as bulk topsoil, mulch, gravel, or sod. If you are still deciding between branches, start with the planner; if you already know the one material you are ordering, start with the calculator.
What's the difference between gravel and crushed stone? +
Gravel refers to naturally rounded rock that has been screened to a uniform size, while crushed stone is mechanically broken rock with angular edges. The angular edges of crushed stone make it lock together better, so it is the preferred choice for driveway bases and paver sub-bases. Round gravel drains faster and is easier to walk on, making it ideal for garden paths and decorative ground cover. Both materials are sold by the cubic yard or by the ton — our Gravel Calculator and Stone Calculator handle the volume-to-weight conversion for either type so you can order confidently.
How do I measure an irregular yard area? +
Break the space into simple shapes — rectangles, triangles, and circles — then add their areas together. For curved garden beds, approximate the shape as a series of rectangles or use the "irregular area" option available in each calculator. Measure each section in feet (length and width), record the numbers, and enter them one at a time. The calculators let you add multiple areas before generating a combined total, so you do not have to do the math yourself. For very complex shapes, lay a garden hose along the border, measure the bounding rectangle, and subtract the corners you do not need.