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Kitchen fits, staircases, first and second fix — describe the job and get the kit list, the timber list and the sums before you load the van. Stair riser, going and 2R+G worked out so you can check them against Doc K, stud centres and board counts done, fixings on the shopping list.
Free plan, no card needed. Pro is £24/month, with 5 days to try it.
Ask, work it out, buy it, tick it off — each step hands to the next. No app hopping.
"Kitchen fit Monday, what do I need?" The Gaffer lists the kit, the fixings and the bits to check before you leave — plinth heights, service positions, wall plumb.
Stair riser, going and 2R+G for the Doc K check, stud centres for a 4m partition, boards per wall. The numbers go straight into the calculator, nothing retyped.
Timber, plasterboard, screws and glue land on a shopping list with a Travis Perkins, Toolstation or Screwfix link on every line.
The lot sits on the job's checklist. Tick it in the van, send it to the lad doing second fix, invoice when the doors hang.
Free, no account needed. Quantities go straight onto a shopping list.
Stair Calculator
Rise, run, riser count + stringer length
13 risers over 2600mm? Get riser, going, 2R+G and stringer length before you cut a string, then check them against Approved Document K.
Stud Wall
Timber + plasterboard + insulation
Studs, noggins, plasterboard and insulation for a partition, from length, height and centres.
Decking / Roofing
Boards, joists & felt by area
Boards, joists and fixings by deck area — the joist count is the one people get wrong.
AI-generated in under 60 seconds from your job description. Every section editable, shareable, downloadable.
30 years of trade know-how in your pocket. Straight answers to on-site problems, specific to the job you describe — and it reminds you of the bits you'd only remember halfway there.
The Gaffer
Your AI site mate
"13 risers, 2600mm floor to floor — what riser and going do I need to pass Doc K?"
2600 over 13 gives you a 200mm riser, which is inside the 150 to 220 domestic limit. Pair it with a 250mm going: twice the rise plus the going is 650, bang in the 550 to 700 band, and the pitch works out at 38.7 degrees, under the 42 maximum. Keep every riser the same to the millimetre — that is the thing Building Control measures.
Always verify to current regs. On-site conditions may vary.
It gives riser height, going, 2R+G and stringer length for a rise and run, with the Doc K riser limit shown beside the input. The private-stair limits are riser 150 to 220mm, going 220 to 300mm, 2R+G between 550 and 700mm, pitch no more than 42 degrees. It does not stop you entering a stair outside them, so check the numbers against the current document for your job.
Both. First fix, second fix, bench joinery, kitchen fitting, decking and stud work all describe the same way. The checklist and the calculators adapt to the job you describe.
Yes. On Pro you share the checklist by link or add crew to a team, so whoever is doing the fit turns up with the same list you built.