Structural timber spans, bracing & tie-downs
Project loads, member grades and code limits need a structural design tool and appropriate professional review.
Carpentry tools & calculators
10 tools to prepare measurements, estimate quantities and plan your next conversation with a trade professional.
Carpentry
Decking budget
Build a planning range using measured area and your own installed rates.
Open calculator CarpentryCladding budget
Build a planning range using measured area and your own installed rates.
Open calculator CarpentryCladding sheets
Estimate whole sheets or packs using the coverage on your selected product.
Open calculator CarpentryDecking board quantities
Estimate rows and full-length boards for a straight rectangular deck.
Open calculator CarpentryTimber volume & lineal metres
Convert a timber schedule to volume and a supply budget.
Open calculator CarpentrySquare-up & diagonal
Check the target diagonal for a rectangular set-out.
Open calculator CarpentryStraight stair geometry
Check geometric rise, going and pitch for a specified straight flight.
Open calculator CarpentryStraight wall stud take-off
Count regular studs and plates for a simple uninterrupted wall.
Open calculator CarpentrySkirting & cornice stock lengths
Convert a measured trim run into a minimum stock-length allowance.
Open calculator CarpentrySpecified fastener pack quantities
Turn a fixing schedule into purchasable packs.
Open calculatorPrepare your measurements
Use the actual material dimensions and a dimensioned plan. Allow for offcuts and distinguish nominal timber names from finished sizes.
Confirm before you commit
Prepare a cutting list and check spans, grades, joints and fixings with the project designer.
Bunnings Trade plannersSpecialist resources
Complex roof, stair and set-out geometry
Specialist geometric layouts can help experienced tradespeople; independently check dimensions and local compliance.