Building Materials Calculators
These building materials calculator tools estimate wood volume in cubic feet (CFT) and floor space index (FSI).
Floor Space Index (FSI) Calculator
This Floor Space Index calculator finds your FSI (also called FAR) from the total built-up area…
Open calculator Building MaterialsWood CFT Calculator
This Wood CFT calculator finds the volume of timber in cubic feet (CFT) for both sawn…
Open calculatorAbout Building Materials Calculators
These building materials calculator tools estimate wood volume in cubic feet (CFT) and floor space index (FSI). Choose a tool below for an instant quantity with the formula and a worked example.
Material and area estimates keep a project on budget. These tools turn dimensions into board feet and floor ratios and show the math so you can order and plan accurately.
Calculators in this category
Frequently Asked Questions
What can I estimate here?
Wood volume in cubic feet (CFT) and the floor space index (FSI) for a plot and building. Each tool covers one task with its formula and an example.
Are these tools free to use?
Yes. Every calculator on this page is free, needs no signup, and works in your browser on mobile and desktop.
Do the tools show the formula?
Yes. Each page states the equation, defines the dimensions, and includes a numeric example.