Shed Size for Equipment Calculator
Size a garden shed to your gear — floor area from your equipment plus a walkway allowance — and see which standard shed footprint fits.
How it works
Floor items = footprint·(1 − shelved%) · Floor area needed = floor items·(1 + access%)
A shed has to hold your equipment and still let you reach it. Start from the floor footprint of the gear, subtract whatever hangs on walls or sits on shelves off the floor, then add a walkway allowance so you are not climbing over the mower to get the rake. Matching that to a standard shed footprint keeps you from buying either a cramped box or a shed with wasted, expensive floor.
Worked example
With 3 m² of equipment, 20% of it shelved, 3·0.8 = 2.4 m² sits on the floor. A 40% walkway allowance makes 2.4·1.4 = 3.36 m² needed — so a 1.8×1.8 m (6×6 ft) shed at 3.24 m² is just short and a 2.4×1.8 m (8×6 ft) shed is the smallest that fits.
Frequently asked questions
How much extra space should a shed have beyond the equipment?
Enough to move around and pull items out — commonly 30–50% on top of the gear’s footprint. Too little and everything has to come out to reach the back; too much wastes floor you pay for.
Does shelving really change the shed size?
Yes. Hanging tools and stacking bins on shelves frees floor space, so a smaller footprint can hold the same gear. This calculator lets you set the share stored off the floor.
Should I size for what I own now or later?
Allow for growth — garden and DIY kit accumulates. Sizing to the next standard shed up is often cheaper per square metre than replacing a shed you have outgrown in a year or two.
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This calculator is for educational purposes. Double-check important results before acting on them.