How is boot volume measured?

Manufacturers use the VDA method, filling the boot with 200mm x 50mm x 100mm blocks. This gives a more realistic figure than simple L x W x H. Our calculator shows both the full rectangular volume and an estimated usable figure (70% of rectangular).

What is a good boot size?

Small city cars: 200-300L. Hatchbacks: 300-450L. Saloons: 400-550L. Estates: 500-700L (up to 1800L seats down). SUVs: 400-700L.

How many suitcases fit?

A standard cabin bag is about 40L. A medium suitcase is about 65L. A large suitcase is about 90L. Divide your usable boot volume by these figures for a rough guide.

How much boot space do I need for a weekly shop?

A typical weekly food shop for a family of four fills about 150-200 litres of boot space. A pushchair adds 100-150 litres. Most hatchbacks with 350+ litres handle a weekly shop easily. Estate cars and SUVs offer 500-700 litres for larger families or bulky items.

What is a good boot size for a family car?

A typical family hatchback has 350-450 litres of boot space. Estate cars offer 500-700 litres. For a family of four, aim for at least 400 litres. A pushchair needs about 100-150 litres depending on size.

CarCalcs

Boot Volume Calculator

Calculate usable boot space volume in litres.

Boot Length

Floor depth front to back

Boot Width

Narrowest usable width

Boot Height

Floor to parcel shelf

How We Calculate This

Calculates rectangular volume from length x width x height, then estimates usable volume at 70% (accounting for irregular boot shapes, wheel arches, etc).

Frequently Asked Questions

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Last updated: February 2026

All calculations are estimates. Actual figures may vary based on driving conditions, vehicle specifications, and other factors.