Stretcher Bar Calculator
Work out stretcher bar lengths, cross braces and corner keys needed for your canvas.
How We Calculate This
Every stretched canvas needs 4 bars (2 width + 2 height). Cross braces add rigidity for larger canvases.
- Under 900mm longest side: No cross braces
- 900-1500mm: 1 cross brace
- Over 1500mm: 2 cross braces
Keys = (4 corners + cross brace junctions) x 2
Frequently Asked Questions
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Last updated: February 2026
All calculations are estimates. Always verify quantities before purchasing materials.