Backing Board Calculator — Size & Material
Work out backing board size and material needed for your frame.
How We Calculate This
Backing board = Rebate size - Clearance
The backing board must fit within the frame rebate with a small clearance (typically 2 mm total) to allow for easy fitting. It sits behind the artwork and mat, secured with framer's points or turn buttons.
Frequently Asked Questions
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Last updated: February 2026
All calculations are estimates. Always verify quantities before purchasing materials.