Usable interior
Compare the interior height, width, and depth with your largest folder, device, case, or box. Exterior dimensions do not tell you what fits inside.
SIZE PLANNING
Home safe size guide
Use interior capacity for the items you actually own, then add room for the future. The calculator gives a sensible starting size—not an exact product recommendation.
QUICK SIZE CALCULATOR
How much safe space do you need?
Select the closest match. Your answer includes a modest growth allowance, but you must still compare a product’s usable interior dimensions before buying.
Check these four measurements before you buy
Door opening
Allow for the open door, not only the safe body. A tight cupboard or wardrobe can make a well-sized safe frustrating to use.
Delivery route
Measure halls, stairs, doorways, turns, and lifts. Larger safes can be heavy enough that the route matters as much as the final location.
Final location
Leave operating space, consider floor protection and privacy, and review anchoring options before committing to a model.
Size is only one part of the decision.
After you know the approximate size, choose the protection type. Fire protection, burglary protection, lock type, and anchoring should be evaluated separately.