Start with a list of what you're storing: your whole household (a move, a renovation) or just less-used items (decluttering, seasonal)? Walk room by room past the big pieces — sofa, bed, wardrobes, table — and the boxes. That difference decides everything: clearing a few rooms is very different from storing a whole house.

Storage is about volume, not floor area. A cubic metre (m³) is 1 by 1 by 1 metre — about ten moving boxes fit in it. By stacking smartly and filling hollow spaces (cupboards, drawers) you store far more than you'd expect. At Inbox you combine units of 4, 6 or 8 m³, so you only pay for the volume you actually use.

Only storing loose, less-used items? Reckon roughly on 8 to 12% of your living area in volume. Storing your whole household? Use the guide by home type below. An average unit with us is around 18 m³; a complete household runs towards 38 m³.

The fastest and most precise way is our storage calculator. You pick per room or per item what you're storing — sofa, wardrobe, fridge, boxes — and instantly see how many m³ you need and what it costs. Still unsure? Our advisors can estimate it over the phone based on what you store.

A student room, a single bedroom or the contents of one space. Think a bed, a wardrobe, a desk and a stack of boxes. Also ideal for freeing up space while decluttering, or for seasonal items like garden furniture and Christmas boxes.

The contents of a studio up to a two-bedroom apartment. Sofa, bed(s), dining table and chairs, cupboards and the matching boxes. A popular size for an apartment move or renovation.

The complete contents of a terraced or family home. Several bedrooms, a spacious living room, the kitchen contents and what's in the attic. Our average customer is around 18 m³, but a whole house quickly reaches this size.

A large or detached house with full contents, including garage and attic. Above 50 m³ is rare for households; if you do need more, the calculator simply works it out up to large volumes.

About ten standard moving boxes, or for example a washing machine plus a few loose boxes. A cubic metre (1 × 1 × 1 metre) is more than most people think — especially if you stack smartly and fill hollow spaces.

In m³ (volume), not m² (floor area). With storage you use the height too: stacking and disassembling saves a lot of space. That's why we sell in cubic metres, so you pay exactly for your volume.

For a studio or one-room, reckon on 4 to 12 m³; for a 2-3 room apartment, 14 to 24 m³. The calculator gives you an exact figure based on your belongings.

No problem. You combine separate units, so you adjust your storage easily. Scaling up during your storage period costs nothing extra — you only pay for what you use.

A washing machine or fridge is about 1 m³, a double bed 2 to 3 m³, a three-seater sofa 3 to 4 m³ and a wardrobe 2 to 3 m³ (less when disassembled). Add up your big pieces and count some boxes on top.

If you want access to your things in between, allow a little extra space. If you store everything in one go until you get it back, you can fill units compactly. In doubt? Go one size up — scaling up costs nothing extra.