MAXScanner calculator widget

Poly Bag Size Calculator — Flat & Gusseted Bag Fit

Editable live calculator

Change any input — the result updates immediately

No hidden assumptions. Inputs, units and the working stay visible so you can check the calculation.

Bag construction Measurement unit Product width Product depth / thickness Product length / height Loading / width allowance Added once to the calculated bag width.Gusset depth allowance Used for gusseted bags.Closure / seal allowance Added to bag length for closing or sealing.

Calculated result

17 × 16 in minimum flat bag

431.8 × 406.4 mm equivalent

Layflat opening circumference: 863.6 mm

Product depth uses 152.4 mm of the flat-bag sizing allowance before added loading clearance.

Show the working

1. Width = product width + depth + loading allowance = 10 + 6 + 1 = 17 in.
2. Length = product length + depth + closure allowance = 8 + 6 + 2 = 16 in.
3. Round both minimum dimensions upward to an available supplier size; do not round down.

Planning geometry only. Confirm the supplier’s measurement convention, usable closure length, film specification and physical fit before ordering.

More actions

Shared links reopen these inputs. Recent and saved calculations stay in this browser unless you clear site data.