Metric to Standard V-Belt Conversion Chart

Easily Convert Metric to Standard V-Belts


Finding the right replacement belt is simple with our Metric-to-Standard V-Belt Conversion Chart. This guide helps you match common metric wedge sections (SPZ, SPA, SPB, SPC) to their closest imperial (classical) equivalents (3V, A/4L, B/5L, C). Use the clickable links to search CrossBelts.com for direct purchase options or browse Amazon with our affiliate recommendations. Perfect for maintenance teams, parts managers, and anyone looking to cross-reference belts quickly and accurately.

Metric ↔ Standard V-Belt Cross-Section Conversion
Metric Section Top Width (mm) Height (mm) Approx. Standard Section Top Width (in) Height (in)
SPZ 9.7 8.0 3V 0.38 0.31
SPA 12.7 10.0 A / 4L 0.50 0.39
SPB 16.3 13.0 B / 5L 0.63 0.51
SPC 22.0 18.0 C 0.87 0.71
3V 9.5 8.0 SPZ 0.38 0.31
5V 15.9 13.5 SPB 0.63 0.53
8V 25.4 23.0 — 1.00 0.91<

Not finding the Cross Reference you want?

V‑Belt Finder Search Tool

Enter a belt number (e.g., A88, BX70, 5L600, 3VX560) and hit Search.

Tip: Try the kevlar “K” variant too (e.g., 5L600K) if applicable.
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