Accurate material quantities for the finishing trades. From skirting boards and door frames to kitchen worktops and staircase components - calculate what you need before you order and ensure your fit-out runs smoothly from first fix to final snag.
Interior finishing materials - skirting boards, architrave, worktops, and staircase components - are often sold in fixed lengths and have significant cutting waste due to mitres, joints, and exact-length requirements. Under-ordering by a single length can mean an additional delivery charge and a delay in completing the room.
Our interior finishing calculators account for the specific constraints of each trade. Skirting board calculations include mitre allowances and door openings; worktop calculations work around kitchen layouts with joints and scribing; and the staircase calculator checks UK Building Regulations compliance for every dimension.
Whether you are a joiner fitting out multiple rooms, a builder completing a new build, or a homeowner upgrading a kitchen, these tools help you order accurately the first time.
Select a calculator below to get instant material quantities for your interior fit-out.
Calculate the total linear metres of skirting board needed for any room or series of rooms. Enter room perimeter, number of doorways and their widths, and the standard board lengths you will be buying. The calculator returns total metres required, number of lengths to purchase, and accounts for corner joints and cutting waste. Supports all skirting profiles.
Use CalculatorEstimate door frame liner, door casing, and architrave quantities for any number of doorways. Enter door dimensions, specify single or double doors, and choose whether you need head and jamb liners or a full pre-machined door set. Returns total lengths of each component and the number of standard lengths required. Covers both metric and imperial door sizes.
Use CalculatorCalculate kitchen worktop lengths, joint positions, and total material needed for any kitchen layout. Enter the run lengths for each section of worktop, specify hob, sink, and return positions, and the calculator works out total linear metres, joint count, offcut dimensions, and whether standard worktop lengths will accommodate the layout without additional joints.
Use CalculatorCalculate stair geometry, material quantities, and UK Building Regulations compliance for any staircase. Enter the total rise and going, choose the stair type (straight, quarter-turn, half-turn, or winder), and the calculator checks all Part K compliance requirements and returns riser count, tread board m2, riser board m2, stringer length, baluster count, handrail length, and newel post quantity.
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