Free tools
Stair runner calculators
Six free stair runner calculators covering length, cost, width, rods, carpet yardage and multi-flight landings. Every tool works instantly in your browser — no account required, and results can be copied, printed or saved to a project if you have a free Stair Runner Calculator account.
Stair runner length calculator
The main calculator: treads, risers, nosing wrap, landings, winders, pattern repeat and waste margin, with a live staircase diagram.
Stair runner cost calculator
Price the job end to end — runner per metre or foot, underlay, fitting labour, rods and delivery, with a clear itemised total.
Stair runner width calculator
Find the right runner width and the reveal of bare tread each side, based on your staircase width and preferred look.
Stair rods calculator
Work out how many rods and brackets you need, the correct rod length for your stairs, and what the set will cost.
Carpet for stairs calculator
Convert your staircase into linear metres and square yards of broadloom carpet, including cutting waste.
Landings & flights calculator
Multi-flight staircases with half landings and quarter landings, added up flight by flight into one purchase length.
Learn before you buy
New to runners? Start with the complete stair runner guide, then measure up properly before ordering.