Size labels and measured foot length are different quantities. A chart does not establish the fit of every model. There is no verified brand-wide fit offset or reproducible wearer distribution in this dataset.
For the A15958F canvas low top, Converse advises half a size below your usual size because this style runs large. Use the Chuck Taylor All Star / Chuck 70 chart below; this advice does not cover every Converse model. The chart has separate US men’s and women’s labels. At 245 mm it publishes two rows, so the measurement alone does not select one unique size.
For men’s 574 Core ML574EVB, New Balance says the model runs small and suggests considering a larger size, without specifying a universal half-size adjustment. The page lists D, 2E and 4E width options and a suede/mesh upper. Check the exact width before increasing length. The table below is the brand’s label chart; it is not a physical measurement of the 574 interior.
Nike advises starting half a size below your usual Nike size for the Air Force 1. Its guide allows the usual size for wider feet and distinguishes upper materials and editions. Start with the Nike chart below, then check the exact product and width. Do not subtract another half size automatically from a foot-length chart result: these are two different reference methods.