Trade toolkit
Eighteen free tools for the jobs joiners, carpenters and kitchen fitters do every week: worktops, angled cabinets, Gola profiles, Häfele Matrix Box S drawers, floor layouts, doors, archs and skirting, cut lists, stud walls, stairs, door fronts, shelves, board weights and pricing. Built by our workshop, free to use on site or in the office, no sign-up.
Kitchens and cabinets
Kitchens
How many worktop lengths a kitchen needs, where the joints go and the cut length of every piece.
Kitchens
Door and drawer front sizes from your cabinet list, for overlay or inset, ready to order.
Cabinets
Runner length, base and back cutting sizes, and runner and front fixing positions for Häfele Matrix Box S Slim drawers.
Cabinets
Saw bevel and cut sizes for cabinets under sloping ceilings and in angled corners, with over, under or mitred tops.
Kitchens
How many bars of Gola, J-pull or LED profile you need, with a cutting plan you can print for the saw.
Cabinets
What a door, panel or full sheet weighs, with a hinge guide, flap power factor and a job total.
Carpentry
How much a shelf in MFC, MDF, plywood or timber will sag, and the longest span it can take.
Paperwork
Branded A4 spec sheets for kitchens, bedrooms, bathrooms and offices, with your own logo and company name.
On site
Flooring
Lay planks, tiles or herringbone in any room shape, with every cut, the packs to order, skirting, underlay, grout and a cost.
Second fix
Doors, linings, architrave and skirting for a whole job, with a cutting plan for every length and a shopping list.
Setting out
Check a room or frame is square from its diagonals, set out with 3-4-5 and solve any right-angled triangle.
Carpentry
Studs, plates, noggins, openings, timber lengths, plasterboard sheets and screws for a stud partition.
Carpentry
Number of steps, rise, going and pitch for a staircase, checked against UK Building Regulations.
Materials
Running metres, lengths to buy and a cutting plan for liner bar, skirting, plinth, cornice and battens.
Materials
Square metres for floors, walls and ceilings, packs needed, and cubic metres and tonnes for concrete or screed.
Everyday
Millimetres to feet, inches and fractions, square and cubic measures, weights, angles and pitches.
In the office
Pricing
Sheets from a parts list, job pricing with markup and contingency, margin, VAT, CIS and retention.
Kit
A tick-off checklist of hand tools, power tools and fixing kit for joiners and fitters, with your own shopping list.
Why we built it
We are DTJ Interiors, a cabinet maker in the Midlands. We make kitchen, bedroom and office cabinets to measure, cut and edge panels and machine MDF doors for fitters, joiners, builders and kitchen studios across the East Midlands and beyond.
These are the calculators we use ourselves, tidied up so they work on a phone on site. They are free, you do not need to sign up, and anything you type stays in your browser.
Got an idea for a tool that would save you time? Tell us at info@dtjinteriors.co.uk or on WhatsApp and we will look at building it.
Get a price
We cut, edge and build to your sizes in our Long Eaton workshop. Email info@dtjinteriors.co.uk, call 0115 784 8231 or WhatsApp 07956 032306.
DTJ Interiors Ltd
Unit 5 Atlas Mills, Birchwood Avenue
Long Eaton, NG10 3ND
Workshop and collection
Monday to Friday, 8am to 4:30pm
Delivery across the East Midlands for £99 + VAT, and further afield priced per job.
DTJ Interiors Limited · Company no. 15242186 · VAT GB460641310
Registered office: The Mills, Canal Street, Derby DE1 2RJ
Every DTJ cabinet comes with a 5-year guarantee. How it works · FAQs · Samples · Terms of sale
