Construction materials calculator from your floor plan
Design an apartment or a house, and gardmi counts the materials for you: areas and volumes are taken straight from the plan, multiplied by editable average prices, with a full catalog and a passport behind every line of the estimate.
Building materials calculator for your house
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Auto quantities
Walls, roof, paving and fence measured as you draw
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Prices
Average prices for your country or your supplier’s quote
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Material catalog
A passport for every material: λ, density, strength
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Apartments & houses
Estimate for each floor and for the whole building
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House and floor plan
Walls, doors, windows, stairs, furniture and several floors
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Drainage
Slopes, depths and the outlet checked for you
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Heating
Heat loss per room, radiators, underfloor heating, boiler
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Electrical and lighting
Lights, sockets and cables; breakers picked by load
Automatic material takeoff — quantities from the plan
You don't tally areas by hand. As you draw, gardmi measures every wall, floor, roof slope and paving area, converts them to the right unit — square metres, cubic metres, linear metres or pieces — and sums the material you need across all floors of the project.
- Walls — volume from length × height × thickness.
- Roof, facade and paving — by area in square metres.
- Foundation, screed and columns — by volume in cubic metres.
- Fence — by the running length of the panels.
Change a wall thickness or a roof size and every figure updates instantly — no spreadsheet to keep in sync.
Average prices are built in — or set your own
Every material ships with an average price for your country, so the estimate shows a total from the first minute, in your local currency. Replace any price with your supplier's quote — your prices are saved with the project and kept even if you remove the object later.
The estimate is broken down by floor and by object, so you can see what drives the cost and where to save.
A material catalog with a passport for every material
Behind every estimate line is a material passport: what it is, where it is used, and the technical specifications — thermal conductivity, density, water absorption, vapour permeability, compressive strength, frost resistance and combustibility. Compare insulation by its λ or masonry by strength before you commit to a purchase.
Works for apartments, houses and several floors
Plan a single apartment or a multi-storey house — materials are summed per floor and in total, so you see the estimate for the whole building and for each level. The same drawing powers both the floor plan and the estimate.
Construction estimating app for phone and computer
- An icon on the home screen — back to your plot in one tap
- Full screen without the address bar — more room for the plan
- The same projects on phone and computer — cloud autosave
You are already in the app — gardmi is installed.
Materials estimate — frequently asked questions
Can I install gardmi as an app on my phone?
Yes. gardmi installs straight from the browser, without App Store or Google Play: on Android and in Chrome or Edge on a computer press “Install the app”, on iPhone open the site in Safari and choose Share → Add to Home Screen. The app opens full-screen from its icon and keeps the same cloud projects.
Is the materials estimate free?
Yes — drawing the plan and getting the estimate is free and needs no sign-up.
How are the quantities calculated?
From the plan geometry: wall volume as length × height × thickness, roof and paving by area, and so on — in real metres.
Can I use my own material prices?
Yes. Average prices per country are built in, and you can override any of them; your prices are saved with the project.
Where do the material specifications come from?
Each material has a passport with typical reference values (SP 50.13330 / GOST); the actual figures depend on the manufacturer and grade. Open the material catalog