Canvas Stretcher Calculator

Bar lengths, mitre angles and bracing for a stretcher frame, and the canvas to cover it.

Finished canvas length (long side) cm

The outside dimension of the stretcher, which is the size of the canvas face.

Finished canvas width (short side) cm

Bar width (the face you see from the side) cm

Standard bar stock is about 4.5 to 5 cm wide across the face.

Profile depth

Fold allowance at each edge cm

Fabric that folds onto the back and takes the staples.

Bracing

Any dimension over about 60 cm wants a brace, because the bars bow inward under canvas tension.

Price of bar stock per metre

Optional. Used for the bar cost.

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Free calculator by Handcraft worked examples and methodology No account, nothing stored.