Storage Space Calculator
See the room you reclaim by clearing things out — in litres, cubic feet, moving boxes, and as a share of the space you started with.
Space you free up
Make “less stuff” visible
It’s easy to underestimate what a declutter buys you. Forty items you never use might sound like nothing until you see them add up to a couple of full moving boxes, or a quarter of a wardrobe you can suddenly breathe in. Putting a number on the reclaimed space turns a vague chore into a concrete win, and it makes the case against buying more storage before you’ve cleared what you have.
Use it as a before-and-after: estimate the space a category is costing you now, imagine clearing the items you never reach for, and watch the freed volume climb. Nine times out of ten the answer isn’t another set of bins — it’s fewer things to put in them.
Frequently Asked Questions
How does the storage space calculator work?
It multiplies the number of items you're clearing by the average volume of one item in litres to estimate the total space freed. That figure is then shown three more ways: in cubic feet (about 28.3 litres each), in standard 60-litre moving boxes, and — if you enter the total storage you started with — as a percentage of that space. The model assumes reasonably tidy, stackable packing, so treat it as a good estimate rather than a precise measurement.
How do I estimate an item's volume in litres?
Litres are just cubic decimetres, so a box 30 × 20 × 10 cm holds 6 litres. As rough guides: a folded jumper is about 2–3 litres, a shoebox about 6, a hardback book about 1, and a standard moving box about 60. You don't need precision — an honest average across the items you're removing is enough for a useful estimate.
Why show the space as a percentage?
A raw litre count is abstract, but 'you'll free about 25% of your wardrobe' is motivating and concrete. Entering the total storage you started with — a wardrobe is roughly 900 litres, a chest of drawers about 300 — lets the calculator turn the freed volume into a share of the space, which is often the number that makes a declutter feel worth it.
Should I buy more storage or declutter first?
Almost always declutter first. Buying bins and shelves to hold things you don't use just relocates the clutter and costs money and space of its own. This calculator is designed to show how much room you can reclaim without buying anything — the most minimalist storage solution is fewer things to store.
A rough estimate that assumes tidy, stackable packing. Real reclaimed space varies with shape and how things stow — use it to compare and motivate, not to measure to the litre.