Know how much to buy — and what it'll cost.
Enter your dimensions, get the exact quantity, a regional cost estimate, and a ready-to-buy checklist — concrete, drywall, flooring, gravel, paint and more.
Real math, not AI guesses.Real formulas — accurate every time, not made up by a chatbot.
How it works
Pick your material
Choose concrete, drywall, flooring, gravel and more from the grid.
Enter dimensions
Type length, width, and depth in whatever units you use.
Get amount + cost
See how much to buy, a cost estimate, and the related materials you'll need.
The amount and the cost.
Most calculators give you only the quantity, or only labor cost. TallyMaterials gives you both, with prices you can edit to match your supplier.
- › Editable national-average prices
- › Unit converter: sq ft ↔ yards ↔ tons ↔ bags
- › Related materials added automatically
You need
4 sheets
Est. cost
~$60
Estimate only — actual quantities and prices vary by region and supplier.
Why people use it
Prices you can edit
Default prices are national averages — change any to match your local supplier.
Real math, not AI guesses
Every result comes from a real formula — the same inputs always give the same correct answer.
One trip to the store
The material checklist adds what you'll also need, so you don't come up short.
Why it's free
Ads keep the lights on — that's it. No login, no paywall, no "premium" tier. Every calculator, every material, free for everyone. Some material links are affiliate links — if you buy through them we may earn a small commission at no extra cost to you.
FAQ
Is it free?+
Yes — completely. Every calculator and every material is free, with no signup and no account.
How accurate are the cost estimates?+
They're estimates, not quotes. Quantities come from real formulas and are accurate for the dimensions you enter. Prices are national averages you can edit — always confirm with your supplier before buying.
Do I need to sign up?+
No. Open any calculator and use it right away. We don't ask for an email, and we don't collect your personal data.
Will it tell me how much to actually buy, including waste?+
Yes. You get the calculated amount plus a suggested overage so you don't come up short on cuts and mistakes.
Is this an AI tool?+
No. Your numbers come from real math, not a chatbot. The same inputs always give the same correct answer — no AI guessing.
You've got a project to start.
Don't let one store trip turn into three, or a budget guess turn into an overspend. Pick your material, enter your numbers, know exactly what to buy.
Start calculating — Free →