Existing web appConcreteCalc
Estimate concrete for slabs, foundations, columns and beams, including waste, truckloads and on-site mixing materials.
HAPPYHOME / TOOLKIT
Smart Building Tools
Design precisely. Calculate faster. Build confidently.
Explore by task
Choose a specialty to find the right tool.
Featured tools
Four selected tools to get started. Open directly in your browser.
Existing web app
Existing web appRoof & Rafters Pro
Calculate pitched roof geometry, batten/purlin spacing and tile or metal quantities; live drawings, CAD and material takeoffs.
Existing web appArchStair
Stair & Ramp
Existing web appTile Layout
Count source tiles, compare four centering options and flag small cuts along walls
New & updated
Explore recent additions to HappyHome.
Foundation Pro
Foundation quantities and budgets: concrete, reinforcement, formwork, labor and material orders.
Masonry & Blocks Pro
Estimate bricks, mortar and plaster; deduct openings and lintels, plan costs and export material orders.
Practical guides
Examples with clear inputs, units and limits. Find a guide for your task.
Masonry & Blocks Pro
Brick, mortar and plaster takeoff: a wall with openings
A 6 × 3 m wall with a door and window: check net masonry, lintels, plaster and the material order.
Read guideLuBan Ruler
Overall, frame and clear dimensions: choosing the right input
A 1,200 mm overall opening is not always a 1,200 mm clear opening.
Read guideArchStair
Ramps: distinguish percent slope from angle
Record rise, horizontal run and vehicle data separately.
Read guide