These free size converters match bed, duvet, pillow, sheet, towel, photo frame and light bulb sizes across UK, EU and US standards, so you can buy bedding or fittings abroad and know they will fit.
Quick answer: Choose the item, enter the size or name you have and pick the region you are buying in. Each converter shows the closest standard size, the gap in centimetres and inches, and a note when sizes vary by brand. Always check the product label before you buy.
Why Do Bed and Bedding Sizes Differ Between Countries?
A UK double mattress is 135 by 190 cm, while a common EU double is 140 by 200 cm and a US full is about 137 by 191 cm, so names alone are not reliable. Our converters compare the actual dimensions rather than the names.
How Should You Measure Before Buying Bedding?
Measure the mattress width, length and depth in centimetres, because fitted sheets and duvet overhang depend on all three. A deep mattress over 25 cm usually needs a deep fitted sheet, which the sheet converter flags for you.
Which Size Converters Do You Need?
Size names change from country to country: a UK king bed is not a US king, and a European pillow is square while a UK pillow is rectangular. Start with the item you are buying and use the size converters below to match it to the size you already own.
| Tool | What it works out |
|---|---|
| Bed Size Converter | Finds the closest UK, EU, US or Australian bed size to any mattress you have. |
| Duvet Size Converter | Matches UK, EU and US duvet sizes and shows the overhang on your mattress. |
| Pillow Size Converter | Finds the closest UK, European or US pillow size to the pillow you have. |
| Bed Sheet Size Converter | Works out the fitted and flat sheets your mattress needs in UK, EU or US sizes. |
| Towel Size Converter | Converts towel names to sizes in cm and inches, or names a towel from its size. |
| Photo Frame Size Converter | Converts photo frame sizes between inches, centimetres and A sizes, and finds the frame to buy. |
| Light Bulb Base Converter | Identifies light bulb bases from a code or measurement and gives UK, EU and US equivalents. |
How Our Size Converters Work
Our size converters match by measurement, not by name. Each one takes the width and length in centimetres or inches and finds the closest standard size, then shows how much bigger or smaller it is, so you can see the fit before you order.
The converters use published standard sizes from retailers and manufacturers, with lengths converted using the exact legal definition of the inch from the Weights and Measures Act 1985 (1 inch equals 2.54 cm).
Tips for Accurate Results With Our Size Converters
- Measure the mattress, not the bed frame. Width and length in centimetres give the most reliable match.
- Add the mattress depth when choosing a fitted sheet: deep mattresses over 30 cm need deep-pocket sheets.
- Pick a duvet at least 40 to 50 cm wider than the mattress so it covers the sides when you sleep.
- Check pillow shape as well as size. European pillows are often square, UK pillows are rectangular.
- Measure the frame aperture, not the outside of the frame, when matching photo and print sizes.
Common Mistakes to Avoid
- Assuming a UK king is the same as a US king. A UK king is 150 by 200 cm, a US king is about 193 by 203 cm.
- Buying sheets by name only. Size converters match by measurement, which avoids most returns.
- Ignoring shrinkage. Cotton bedding can shrink a few per cent in a hot wash.
- Matching light bulbs by wattage instead of the cap code, such as E27 or GU10.
Bed and Home Size Converters FAQs
Are UK and EU bed sizes the same?
No. UK sizes follow National Bed Federation dimensions such as 135 by 190 cm for a double, while most EU beds are 140 by 200 cm. Bedding for one may be slightly too small or loose on the other, so compare dimensions.
Do sizes vary by brand?
Yes. Duvet, towel and pillow sizes have no single legal standard, so brands differ by a few centimetres. The converters use published charts from major makers and say when a size is an example rather than a fixed standard.
Can I convert light bulb bases with these tools?
Yes. The light bulb base converter matches codes such as E27, E14, B22 and GU10 and explains which regions use each, so you can find a bulb that fits a lamp bought abroad.
For flooring under the bed, try the carpet calculator, and see every category on our home calculators page.