Work out whether a retail unit's rent, rates, and staff costs actually pay for themselves, and exactly how much footfall you'd need to break even. Ballpark numbers are pre-filled below; overwrite them with your own.
weekly passers-by needed just to break even. Stand outside and count for an hour, at the time of day and day of week that matters most. Does that number feel realistic?
This calculator is one part of it. Get all 33 points (footfall, catchment, competition, lease terms, and more) plus this calculator as a spreadsheet, for £10.