YardTally
Free home & garden material calculators
YardTally estimates concrete bags, mulch yards, gravel tons, grass seed, fertilizer, paint, and outdoor materials from simple dimensions. Enter length, width, and depth (or area and rate) for cubic yards, bags, or product pounds in US or metric units. Math runs privately in your browser—confirm bag yields, local codes, and product labels before you buy.
Popular calculators
Concrete Calculator
Slabs, footings, and solid steps with cubic yards and bag counts.
Concrete Calculator for Post Holes
Fence and sign post hole concrete by diameter, depth, and count.
Sonotube Concrete Calculator
Round column and pier forms by diameter and height.
Mulch Calculator
Bed mulch in cubic yards and bag counts.
Mulch Calculator for Tree Rings
Annular mulch rings around trees by outer and trunk diameter.
Browse by project type
Concrete calculators
Free concrete calculators for slabs, footings, fence post holes, Sonotubes and steps. Get cubic yards and bag counts, plus guides on mixing and waste allowance.
Landscape material calculators
Free landscape calculators for mulch, gravel, topsoil, sand, pavers and raised beds. Enter area and depth for cubic yards, tons and bag counts.
Outdoor structure calculators
Free calculators for fence posts and pickets, deck boards and joists, roof pitch and shingles, paint gallons and retaining wall blocks.
Lawn & garden calculators
Free lawn calculators for grass seed (new lawn and overseed) and fertilizer from nitrogen targets and N-P-K analysis. Rates per 1,000 sq ft.
Guides
How Much Concrete for Fence Posts?
Most residential fence posts need about one to three 60–80 lb bags of concrete each, depending on hole diameter and depth. An 8-inch-wide, 2…
Mulch Depth Guide
Most flower and shrub beds do well with about 2–3 inches of organic mulch. Tree rings use a similar depth in a wide donut, kept off the trun…
How Many Bags of Concrete Do I Need?
An 80 lb bag yields about 0.60 cu ft; you need roughly 45 bags per cubic yard before waste. Divide your project volume in cubic feet by the …
How Much Concrete for a 10×10 Slab?
A 10×10 ft slab at 4 inches needs about 1.23 cubic yards (33.3 cu ft) before waste—roughly 62 bags of 80 lb mix or 82 bags of 60 lb mix afte…
Mulch for Common Garden Bed Sizes
At 3 inches deep, a 4×8 ft bed needs about 8 cu ft of mulch (four 2 cu ft bags). A 10×4 bed needs about 10 cu ft; a 20×5 bed needs about 25 …
Gravel Types for Driveways
Most DIY gravel driveways use about 4–6 inches of compacted angular crushed-stone base (dense grade / crusher run) plus 2–3 inches of surfac…
How to Measure Roof Pitch
Roof pitch is inches of rise per 12 inches of run. Place a level horizontally against a rafter or roof surface, mark 12 inches along the lev…
How Much Grass Seed per Square Foot?
Grass seed is usually sold by pounds per 1,000 square feet, not a universal ounces-per-square-foot number. Multiply (lawn sq ft ÷ 1000) by t…
Fertilizer Nitrogen per 1,000 Square Feet
Product fertilizer pounds equal desired pounds of actual nitrogen divided by the nitrogen percent as a decimal. For 1 lb N per 1,000 sq ft w…
Raised Bed Soil Mix for a 4×8 Bed
A 4×8 ft raised bed filled 12 inches deep needs 32 cubic feet of mix (about 1.19 cubic yards). Volume is interior length × width × depth. Mi…
How Much Paint Do I Need for a Room?
Paint gallons equal paintable wall area times coats divided by coverage. Wall area is roughly perimeter × height minus doors and windows. Ma…
Paver Base Gravel and Sand Depth
Many DIY patio guides use a rule of thumb of about 4–6 inches of compacted gravel base plus about 1 inch of bedding sand under concrete pave…
Deck Material List for a 12×16 Deck
A 12×16 ft deck covers 192 square feet of footprint. Board count depends on face width and orientation; joists are commonly 16 inches on cen…
Retaining Wall Blocks and Base
A 20 ft wall that is 3 ft exposed (about 4 courses of 8-inch-tall blocks) needs roughly 120 face blocks before corners and ~5–10% waste, plu…
Topsoil vs Garden Soil
Topsoil usually means mineral soil for grading and fill, while bagged garden or raised-bed mixes often include compost and amendments. Calcu…