WoodCalcs.uk
Lining Calculator — Fabric & Felt for Boxes
Calculate fabric or felt quantities for lining boxes and cases.
How We Calculate This
This calculator estimates the fabric or felt needed to line the interior surfaces of a box.
Area calculation
Base = Length x Width
Sides = 2(L x D) + 2(W x D)
Lid = Length x Width
Each piece includes an overlap allowance (default 20mm) added to every cut edge for folding under and trimming.
Fabric length
Each interior face is a flat rectangle of fabric. The calculator nests these pieces across your roll width — piecesAcross = floor(roll width ÷ piece width), then rows = ceil(pieces ÷ piecesAcross) — and sums the linear run pulled down the roll, plus a 12% hand-cutting waste allowance. If a face is wider than the roll it is flagged, since it would need seaming. Pile fabrics (velvet, ultrasuede) are not rotated, because the pile must lie the same way on every piece, so they use slightly more length than plain felt or baize.
Frequently Asked Questions
Velvet or flocked fabric is the traditional choice for jewellery boxes as it protects delicate items and looks luxurious. Self-adhesive felt is easier to work with for beginners. Ultrasuede is a durable modern alternative that does not snag on jewellery.
Self-adhesive materials peel and stick directly. For non-adhesive fabrics, use spray adhesive (3M 77 or similar) applied evenly to the wood surface. PVA glue works but can soak through thin fabrics. Cut pieces slightly oversize and trim with a sharp blade after fitting.
Lining the lid interior gives a professional finish, especially for presentation boxes and jewellery boxes. For the lid, pad it with a thin layer of foam or wadding before covering with fabric for a cushioned look. Tool boxes and utility boxes do not need lid lining.
Allow 10-20mm extra on each piece for folding under the edges or for overlap at corners. This calculator includes overlap allowances automatically. Cut pieces slightly oversize and trim to fit for the neatest finish.
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Box Dimension Calculator
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Last updated: February 2026
All calculations are estimates. Always verify measurements and material quantities before cutting or purchasing.