How to Measure Your Bed for a Custom Mattress (Step by Step)
Measure the inside of the frame, edge to edge, at the point where the mattress will sit. Measure width and length twice, note thickness limits and any shape cuts, and never round.
Key points
- What you need. A metal or fabric tape measure, a pencil, a notebook and a phone for photos.
- Measure the inside of the frame. Measure the inner width and inner length of the frame or platform where the mattress rests.
- Thickness and depth. Check how deep the frame is. A very thick mattress can sit above the frame edge, which can be fine, but you may also want it flush.
- Corners, curves and notches. Note any rounded corners, bay-window curves or cut-outs for posts.
What you need
A metal or fabric tape measure, a pencil, a notebook and a phone for photos. Ask a second person to hold the tape on larger beds.
Measure the inside of the frame
Measure the inner width and inner length of the frame or platform where the mattress rests. Do this at two or three points, because old wooden frames are often not perfectly square. Use the smallest measurement that you find, then discuss tolerance with us.
Thickness and depth
Check how deep the frame is. A very thick mattress can sit above the frame edge, which can be fine, but you may also want it flush. Decide this before you order.
Corners, curves and notches
Note any rounded corners, bay-window curves or cut-outs for posts. Draw a simple sketch with dimensions and photograph the frame.
Common mistakes
Measuring the old mattress (which may have shrunk or stretched), rounding to the nearest inch, measuring the outside of the frame, or forgetting about bedposts.
Frequently asked questions
Should I measure in inches or centimetres?
Whichever you prefer. The Studio supports inches, centimetres, feet and millimetres and stores everything in millimetres.
What if my frame is not square?
Give us all the measurements and a photo. We will advise on the best fit and confirm tolerance with you.
Should I leave a gap?
Usually a few millimetres of clearance so the mattress can sit easily, but we will confirm it with your frame details.
Keep reading
Custom Size Mattress: Made to Your Exact Measurements
Everything about made-to-measure mattresses in South India: how sizing works, what shapes are possible, how to measure and what changes the price.
Read more →Custom & sizeWhat Is a Custom Size Mattress and Who Needs One?
A custom size mattress is built to your exact bed measurements. Learn who needs one, what it costs in terms of choices and how ordering works.
Read more →Custom & sizeCustom Mattress for an Antique or Wooden Cot: What to Know
How to get a comfortable, properly fitting mattress for an antique, teak or rosewood cot, including support, ventilation and sizing.
Read more →Custom & sizeStandard Mattress Sizes in India: Single, Queen, King Chart
Standard Indian mattress sizes in inches, centimetres and millimetres, with advice on choosing and when a custom size is better.
Read more →This article is general information, not medical advice. If you have persistent pain or sleep problems, please speak to a doctor.
Related reading
Want this made to your size?
Design it in the Studio and get a factory-checked quote on WhatsApp.
