Loading page
About this tool
Estimate how long flat-pack furniture takes to build from part and fastener counts, skill, tools and helpers.
This estimator predicts how long a flat-pack furniture build will take by costing the work that is actually in the box: about 0.8 minutes to handle each panel, 0.4 to drive each screw, 0.6 per cam lock and 0.2 per dowel, on top of a base time for the item. That work content is scaled by experience and tools, divided by an effective team size — two people are worth about 1.6 builders once handing and holding are counted — and, when you are building several identical items, reduced by Wright's 90% learning curve. It also lists the tools to have on the floor before the carton is opened.
Open Furniture Assembly Time Estimator on AltFTool — it loads instantly in your browser.
Add your input to the workspace.
Adjust the options until the result looks right.
Copy or download the output and put it to work.
Part, screw, cam lock and dowel counts drive the estimate, so a heavy chest of drawers is not treated like a bedside table.
Extra people are worth less than one each; the model uses 1.6× for two and 2.0× for three rather than pretending help is linear.
Repeated identical items follow Wright's 90% curve, so the batch total is not just the single-item time multiplied out.
Most single items land between 30 minutes and 3 hours: a dining chair is around 20–30 minutes, a bookshelf 60–90, a desk about an hour and a two-door wardrobe often 2.5–4 hours for one person. Part count and cam-lock count predict it better than the price or the brand.
Yes, but not twice as fast — expect roughly a 35–40% saving rather than 50%, because one person is often waiting, holding or reading. A second pair of hands helps most on wardrobes and beds where large panels must be held upright, and least on small items where two people simply get in each other's way.
It typically cuts total time by around 25–35% compared with hand tools, mostly on items with many screws. Set the clutch low and finish by hand — chipboard strips easily, and an over-driven cam bolt or hinge screw is far slower to fix than it was to drive.
Because you have already read the manual, learned the part names and worked out the sequence. This is the learning curve first described by T. P. Wright in 1936: at a 90% rate, every doubling of the number built cuts the unit time to 90% of the previous figure, so six chairs take about 5.1 times the first chair rather than 6 times.