Measuring for equipment: getting the size right

Why sizing is not a formality

A wheelchair an inch too narrow causes pressure damage; an inch too wide makes self-propelling exhausting. A walker at the wrong height either stoops the user or fails to support them. A bath bench wider than the tub does not go in the tub. Sizing mistakes do not announce themselves in a showroom — they show up at home, as discomfort, skin damage or a fall.

None of this measuring is your job alone — we ask the right questions for the category when you order, and equipment we deliver is fitted at delivery. But knowing what gets measured, and why, makes the questions make sense.

Walkers, rollators and canes

• Handle height: the user stands upright in everyday shoes, arms relaxed at the sides — the grip should sit at the crease of the wrist, so the elbows bend slightly in use. Stooping to reach the grips means the frame is too low.
• For rollators, seat height matters too — sitting down on it and standing up from it should not be a struggle.
• Weight capacity is an engineering limit, not a suggestion; bariatric frames exist and should be used when they apply.
• Width — measure the narrowest doorway the frame must pass through, bathroom included.

Choosing between a walker and a rollator →

Wheelchairs and transport chairs

• Seat width: hip width measured seated at the widest point, plus a little clearance — enough for winter clothing, not enough to slide sideways.
• Seat depth: from the back of the buttocks to behind the knee, leaving a gap so the front edge does not press into the calf.
• Lower-leg length sets the footrests, so feet rest flat rather than dangling or jamming.
• The home has to fit the chair as well as the chair the person — doorway widths, hallway turns and threshold heights decide what can actually be used in the house, and plans expect the equipment to be usable in the home it is ordered for.

For covered wheelchairs, plans require an in-person mobility evaluation by a clinician — the measurements ride along with it. We coordinate both.

Hospital beds and support surfaces

• The user’s height and weight decide the frame — standard, low or bariatric — and every frame carries a manufacturer weight capacity.
• Mattress width and length must match the frame exactly; a surface hanging past a rail edge is an entrapment hazard, not a fitting quirk.
• The room needs measuring too: preparing the home for a hospital bed covers clearances, power and the route in.

Bath safety

• Measure the tub’s interior width where a bench or chair will stand, and the height of the tub wall for a transfer bench.
• Check the weight capacity of anything that will be sat on, leaned on or gripped.
• Most bath equipment has height-adjustable legs — the right setting puts hips level with or slightly above the knees for standing up.

Braces and compression

Braces size from the manufacturer’s chart for that specific product — usually a circumference at a stated landmark — and anything bilateral needs the side on the order. Choosing the right brace →

Compression garments have their own measuring discipline — morning measurement matters more there than anywhere else. How to measure for compression →

If you are not sure

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