Browser-only
Inputs stay on the page while you estimate.
Calculations run after the static page loads. No accounts, saved projects, analytics, ads, or API lookups are used in V1.
Metric-first estimates
Home Project Calculator Hub
A focused starting point for paint, flooring, tile, concrete, gravel, soil, and mulch planning. Enter metric measurements, adjust visible assumptions, and calculate in your browser.
- 5
- browser calculators
- 0
- supplier price feeds
Metric inputs
Metres, millimetres, litres, m2, and m3 first.
Planning estimate
Optional costs use only prices you enter.
Calculators
Measure once,
estimate with clarity.
Five focused metric calculators for the quantities people need before buying materials. Every tool keeps its assumptions visible and runs in your browser.
Walls, coats & coverage
View all calculators Paint calculator
Estimate rectangular-room wall area, paint litres, waste, whole containers, and optional container cost.
Zones, waste & boxesFlooring calculator
Estimate flooring area across one or more rectangular zones, then round waste-adjusted area up to whole boxes.
Area, tile size & boxesTile calculator
Estimate floor or wall tile area, individual tiles, whole boxes, and optional box cost.
Slabs, footings & post holesConcrete calculator
Estimate concrete volume for slabs, footings, or cylindrical post holes, with optional bag rounding.
Volume, tonnes & bagsGravel, soil & mulch calculator
Estimate bulk material volume, tonnes from editable density, and optional litre-bag counts.