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How To Measure the Size of Your Storage Space

How to Measure the Size of Your Storage Space

Whether you're listing your space on StoreInMySpace.com or trying to understand how much storage you need, the process is easy once you know what to measure.

Below is the step-by-step method for garages, spare rooms, sheds, lofts, basements, and outdoor spaces.

 

✔️ 1. Measure the Floor Area (Length × Width)

This gives you the square footage (sq ft) — the main number renters look for.

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Steps:

  1. Take a tape measure.
  2. Measure the length of the space (in feet or metres).
  3. Measure the width of the space.
  4. Multiply the two numbers together:

Formula:

Length × Width = Total sq ft

Example:

  • Length: 10 ft
  • Width: 6 ft
  • 10 × 6 = 60 sq ft

That means your space is 60 sq ft of usable floor area.

 

✔️ 2. Measure the Height (Optional but Useful)

Some renters want to know if they can stack items.

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Steps:

  1. Measure from the floor to the ceiling.
  2. Note if different areas have different heights (lofts, garages, basements often do).

Example:

  • Height: 8 ft
  • This means the renter can stack boxes or tall furniture.

This helps you describe the space accurately.

 

✔️ 3. Identify Any Areas That Aren’t Usable

Not all floor space counts if it can’t be used.

Subtract or note areas:

  • Sloped ceilings (lofts)
  • Areas blocked by boilers, freezers or fixed equipment
  • Narrow corners that can’t fit boxes
  • Low-height edges
  • Shared walkways
  • Car access lanes (for garages)

Describe these clearly in your listing.

 

✔️ 4. For Garages, Use the Standard Size Guide (If in Doubt)

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If you can’t measure exactly, UK average garage sizes help:

Single garage (UK average)

  • Approx. 8–10 ft wide
  • 16–20 ft long
  • = 128–200 sq ft

Half-garage used for storage

  • Often 30–70 sq ft

You can refine the number if you have a tape measure.

 

✔️ 5. For Lofts & Attics, Measure Only the Flat Usable Area

Lofts usually have sloped sides.

Measure ONLY the areas where:

  • a person can stand
  • boxes can be placed
  • height is at least 1 metre

Describe the rest as “additional low-height space”.

 

✔️ 6. For Sheds or Outdoor Buildings

Measure as you would a room:

  • Inside length
  • Inside width
  • Inside height

✔ Mention if walls or floors are insulated/dry
✔ Note if floorboards are uneven
✔ Mention door width (important for large items)

 

✔️ 7. For Spare Rooms

A normal bedroom in the UK is usually:

  • Small single: 50–70 sq ft
  • Medium: 70–100 sq ft
  • Large: 100–150+ sq ft

But always measure to be sure.

 

✔️ 8. Convert Metres to Feet (If Needed)

If you measure in metres:

1 metre = 3.28 feet

Quick conversions:

  • 1m × 1m = 10.76 sq ft
  • 2m × 2m = 43 sq ft
  • 3m × 3m = 97 sq ft

Formula:
(metres × 3.28)² = sq ft
(or simply multiply total m² × 10.76)

 

✔️ 9. Take Photos From Multiple Angles

Photos help renters understand the true size.
Take:

  • One photo from each corner
  • One of the entrance
  • One of anything that might reduce usable space

This increases trust and bookings.

 

✔️ 10. Add “Approximate Measurements” If Your Space Is Irregular

If it’s not a perfect rectangle (like many lofts, garages, or L-shaped spaces), just describe:

  • “Approx 60–75 sq ft usable floor area.”
  • “Main area 2.5m × 2.5m + small side section.”

Clarity is more important than precision.

 

? Done! That’s your space size.