Know how much to buy before you drive to the store.
15 free calculators for paint, drywall, flooring, concrete, decks, fences, roofs and more. Enter your measurements and get exact quantities, a shopping list and a cost estimate you can print.
Walls and ceilings
Floors
Concrete, pavers and fill
Yard, garden and outdoor
- Mulch, soil and gravel calculatorBags, cubic yards or tons of mulch, topsoil, gravel and sandOpen calculator
- Sod and grass seed calculatorSod pieces and pallets, or pounds of grass seedOpen calculator
- Fence calculatorPosts, rails, pickets and concrete for a wood fenceOpen calculator
- Deck calculatorDeck boards, joists and screws for a rectangular deckOpen calculator
Roofs and stairs
Why Calcupine
Built to fix what people dislike about big calculator sites: clutter, confusing results and answers you can't check.
Calculator first, no clutter
The calculator is the first thing on every page. No pop-ups, no autoplay video, no sign-up.
Answers in store units
Gallons and quarts, bags, boxes, sheets and bundles: the units you actually buy, not just square feet.
Real rooms, not just rectangles
Add L-shapes, circles and triangles, and subtract islands or built-ins. Feet and inches, no converting.
Waste is built in
Each result adds the extra the trades plan for, and rounds up after the waste, so you don't run short.
A shopping list you can print
Quantities, editable prices and a total. Print it, copy it to your phone, or share a link to your exact result.
Every formula is public
We show how each number is worked out, test each calculator against worked examples, and link our sources.