Pick one unit, centimetres or inches, before you start measuring, and keep it for every number until your order is confirmed. Mixing the two partway through an order is an easy way to end up with a piece that does not fit. It is also one of the easiest problems to avoid.
Where mixed units go wrong
Bedding sizes reach you from many directions: a mattress label, an old duvet's care tag, a product page, a size chart from another shop. Some give centimetres, some inches, and some give both. A number written without its unit can be read either way. Rounding a conversion to whole inches can lose more than a centimetre. That difference can matter when you are checking whether a cover matches an insert.
Choose your unit and stick to it
Use the unit your tape measure shows most clearly, or the one you are most comfortable reading. What matters is that every measurement on your list uses the same one. When a product page gives both units, compare it using the unit you measured in. If the two figures on a page do not seem to agree with each other, ask before ordering.
Write the unit next to every number
Write "200 cm", not "200". It feels fussy, but a list of bare numbers is hard to check a week later, and hard for anyone else to read with certainty.
Convert once, and exactly
If you do need to convert, one inch is exactly 2.54 centimetres. Multiply inches by 2.54 to get centimetres, or divide centimetres by 2.54 to get inches. Keep the full result while you work. If you shorten the written figure, keep the original measurement alongside it rather than silently rounding to a different size. Then convert back as a check. If you cannot get close to your original number, something has slipped.
A worked example, not a size recommendation
An insert measuring 90 × 90 inches converts to 228.6 × 228.6 cm. It does not become 230 × 230 cm just because that is a nearby listed size. Compare the actual numbers and ask about fit if they differ.
| Recorded measurement | Converted measurement |
|---|---|
| 90 in | 228.6 cm |
| 200 cm | About 78.74 in |
| 12 in mattress depth | 30.48 cm mattress depth |
These are arithmetic examples, not SCANDALINEN product sizes. A mattress depth is also not a finished fitted-sheet pocket measurement; tell us the measured mattress depth and let us confirm the appropriate fit.
Say what each number measures
A unit is only half the information. Label each figure with what it describes:
- mattress width, length and depth, measured with the topper and protector on
- the duvet insert, laid flat and measured edge to edge
- each pillow, width and length
A mattress measurement and a duvet measurement can look similar on paper and mean very different things.
Keep one order note
Put everything in one place: the unit you chose, each labelled measurement, and the pieces you plan to buy. Compare that note with the sizes on each product page before adding anything to your basket. You can browse our French linen bedding with your note beside you.
When you send measurements for a custom size
Use the same note. State the unit once at the top, label every figure, and say whether depth includes a topper. If you are unsure about a number, measure it again rather than estimating. When your list is ready, send us your measurements and we will confirm the details with you before you order.
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