Independent UK storage sizing

Storage Volume Calculator

Add your items. Find your storage size.

✓ No postcode✓ No sign-up✓ Free, instant estimates

Presets replace the list with typical belongings. Beds exclude mattresses; mattresses are listed separately. Edit everything to match your load.

126 library items0 belongings selected
Your selected inventory
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Use the same unit for all dimensions. For feet and inches, select inches and enter the total, or use decimal feet (6 ft 6 in = 6.5 ft).

Packing & access options

Saving is optional. Your inventory stays in this browser and is not sent to us.

Inventory floor packing: 86% efficient, 78% balanced, 66% loose. Access adds 0%, 15% or 35%. All estimates include 8% safety space.

When a volume estimate is useful

A measured packed load or a removals inventory can give you an approximate cubic volume. Enter it above, then choose a packing style and access level. The inventory method remains better for assembled furniture or fragile items.

Volume-only efficiency is 75% for efficient packing, 62% balanced and 50% loose, with an 8% safety margin. This substitutes a conservative packing allowance for the individual footprint checks that volume alone cannot perform.

Conversions that matter

1 ft³ = 0.028316846592 m³. 1 yd³ = 0.764554857984 m³. Floor area is volume divided by usable height, with packing and access adjustments. It is not a direct cubic-metre-to-square-foot conversion.

See a worked cubic-metre example →
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Independent UK storage planning. Free estimates, calculated in your browser.

© 2026 WhatSizeStorage.co.uk. Estimates are not a fit guarantee. Check actual unit dimensions and your provider’s rules.