Good V-belt conversion and cross-reference charts are available at MainSupplies.com and CrossBelts.com as of 2016. VBelts4Less.com is another website that offers a good conversion tool for V-belt part numbers.
V-belts with identical measurements and dimensions are often sold under different names and categories depending on the brand and manufacturer of the belt. V-belt conversion charts, such as those on CrossBelts.com, list the dimensions of V-belts in addition to their identification codes for various companies, such as GoodYear, Dayco and Gates. The website also organizes its V-belt data into categories such as Kevlar Corded V-belts, Cogged Banded V-belts and Wedge V-belts.