Editorial standards

Methodology & sources

YardTally turns project dimensions into material quantities, shopping counts, and planning notes. The goal is practical buying guidance with visible assumptions, not a hidden black-box number.

Last reviewed: .

How we build calculator pages

We show the formula

Material estimates start from explicit area, volume, coverage, and waste formulas. The page explains how the quantity, bag count, and bulk order figure are derived.

We round for buying decisions

Most project materials cannot be bought in fractions. We round up where appropriate and label waste or compaction assumptions so visitors understand why the buy count is higher than raw volume.

We separate presets from quotes

Scenario pages and product-size assumptions are planning presets, not supplier quotes. Real coverage varies by brand, moisture, compaction, site conditions, and installation quality.

We keep ordinary inputs local

The public calculators run in the browser and do not require an account. Normal calculator inputs are not uploaded to our servers.

Tool-by-tool source notes

Tool Source basis Known limits
Raised bed soil Volume formulas, common bed dimensions, bag sizes, bulk cubic-yard conversion, and mix ratios. Settling, compost density, actual bed depth, and supplier bag sizes can change the order quantity.
Drywall Wall area, sheet coverage, opening deductions, and common compound/tape/screw assumptions. Layout, ceiling height, waste, openings, corner bead, and finish level can change the final material list.
Mulch, gravel, and concrete Area-depth volume math, density or bag-yield assumptions, and common project scenarios. Compaction, grading, spillage, moisture, sub-base prep, and supplier yield figures can change real orders.
Paint Wall area, coats, coverage per gallon, and practical gallon/quart buying splits. Surface texture, primer, color change, application method, and paint brand coverage can change usage.
Planting calendar USDA zone and frost-date planning data plus crop timing windows. Microclimate, cultivar, weather, elevation, and seed packet instructions can move planting dates.

Corrections

Send corrections to [email protected]. Include the page URL, the expected value, and the source you are referencing.

FAQ

Are YardTally material quantities exact?

No. They are planning estimates based on standard formulas and clearly labelled assumptions. Always confirm against supplier coverage, project conditions, and local practice.

How do I report a wrong bag size or coverage assumption?

Send the calculator URL, the current value, the expected value, and a source such as a supplier product page or manufacturer data sheet.