Flex Bend-Radius & Stackup Thickness Calculator

Estimate board thickness and minimum bend radius for a 4–12 layer flex circuit.

Approx. board thickness
Min bend radius
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Estimate only: thickness ≈ layers × 0.0055″; static ≈ 6–10×, multilayer dynamic ≈ 10–15×, strong dynamic ≈ 25× thickness. PCBark confirms on DFM review.