Free online calculators
Building material calculators for renovation projects
Calculate tiles, paint, concrete, decking, drywall, insulation and more with 35+ free calculators — save results into projects with budgets, tasks and floor plans.
How it works
Three steps from sketch to finished project
Draw your floor plan
Sketch rooms and label areas in the visual planner. Dimensions update live as you draw.
Run calculations
Material quantities for tiles, paint, insulation, flooring and more — auto-filled from your room geometry.
Track tasks & budget
Add tasks, log hours, attach photos and watch your budget and timeline come together — per room.
What's included
Everything you need in one place
Floor Planner
Draw rooms to scale, label areas, and get instant perimeter and area measurements. Rooms you draw automatically appear in your project.
Open floor planner35+ Calculators
Tiles, paint, insulation, flooring, concrete, cladding, roofing and more. Pre-filled with your room's exact dimensions when opened from a project.
Project Manager
Tasks, hours, budget and photos — organized by room. Your floor plan is the structure; everything else hangs off it automatically.
Fully integrated
Draw once. Calculate everywhere.
Every room you draw becomes a project room. Open a calculator from that room and your dimensions are already filled in. Save results back to the project — budget and quantities stay in sync automatically.
All calculators
Use standalone or open from within a project room — your choice.
Tile laying
Calculate tiles, adhesive, grout and membrane for bathrooms, kitchens and hallways — with waste and building code requirements included.
Deck / Patio
Plan your deck from the ground up. Calculate decking boards, joists, posts, foundations and all brackets — suited for ground-level or raised construction.
Stud wall
From study to bedroom, or dividing a room. Calculate framing, insulation and plasterboard for interior stud walls.
Insulation
Mineral wool, glass wool or EPS — calculate packs, vapour barrier and total cost. With building code references for walls, roofs and floors.
Boards & drywall
Calculate plasterboard sheets for walls and ceilings, including filler, primer and trims around edges and floors.
Boards & cladding
Count boards, waste and fasteners for exterior cladding, interior panelling or flooring — with adjustable gap spacing.
Concrete
Calculate concrete volume for foundations, pad foundations, columns or slabs. Includes waste allowance and number of bags.
Paint & surfaces
Find the right amount of paint, primer and coats for walls, ceilings and facades. Adjust for coverage and number of coats.
Timber & lumber
Plan any mix of timber by the linear metre — battens, rafters, lekter, trim and more. Add tape and fasteners automatically.
Parquet & laminate
Calculate packs of parquet or laminate with correct waste per laying pattern. Includes underlay and expansion gaps.
Fence & picket
Calculate posts, boards and concrete for a driveway gate, garden fence or picket fence. With timber class guide and frost depth information.
Stairs
Calculate steps, materials and handrails for indoor and outdoor stairs to standard building code dimensions.
Roof & roofing
Calculate roof area, number of tiles, battens and underlay. Area allowance is calculated automatically from roof pitch.
Facade cladding
Calculate boards, battens, wind barrier and screws for external wall cladding — timber, fibre cement or other systems.
Exterior insulation
Calculate insulation boards, mechanical fixings and rail system for external wall insulation.
Render & plaster
Calculate base coat, finish coat, reinforcement mesh and primer for rendered facades — mineral, acrylic or silicone systems.
Paving stones
Calculate stones, bedding layer and jointing sand for driveways or patios. Adjustable for frost depth by region.