Walk-In Cooler Sizing Calculator

This calculator works backward from how much food you serve to how much cold storage you need to hold it. It starts by estimating daily meals as seats times meal turns per seat, then assigns a storage volume per meal — 0.8, 1.2, or 1.6 cubic feet depending on whether your menu is simple, moderate, or complex, since a diverse menu means more distinct fresh ingredients sitting in inventory at once. That base volume is then scaled by a delivery-frequency factor: daily (7x/week) deliveries carry a factor of 1.0, while weekly deliveries push the factor up to 2.5, reflecting that infrequent deliveries force you to hold several days' worth of product rather than replenishing constantly. The resulting cubic footage is converted to floor area using a 6.5-foot usable shelf height (below the standard 7.5-foot interior ceiling, to account for floor clearance), then inflated by 30% to leave room for aisles and staff access — walk-ins aren't packed wall-to-wall with shelving.

That floor area is matched against a list of common modular walk-in sizes (6x6 up through 12x20); if your needs exceed every standard size, the calculator falls back to a custom square-root-based footprint. Refrigeration load is a rough estimate of 40 BTU per cubic foot of full interior volume for a 35°F cooler — freezers would need substantially more and aren't modeled here. Shelving footage assumes three shelf levels around the interior perimeter, minus roughly 3 feet for the door swing. Treat the delivery-days figure as a planning guide, not a food-safety limit — perishables still have their own shelf-life constraints regardless of how much room is available.