Converting Sheets

October 20, 2020

We currently own a king bed with many sheet sets. We just purchased an adjustable frame for our new split king. A split king is basically two XL twin mattresses. The only difference between king sheets and split king sheets is the fitted sheet is two twin xl sheets.


The flat sheet and pillow cases are still king. I have some nice sheets that I would like to convert the fitted sheets. I have an idea on how I could do it but I wanted to see if anyone has ever done this or has an idea on how to do it?


Bronze Post Medal for All Time! 105 Posts
October 20, 20200 found this helpful
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I spoke with my sister in law who does a lot of sewing. She suggested that if you wanted to do this you would need to cut the sheet in half and add the elastic band to the sheet. You will need to cut and make the corner of the sheet in order to fit the bed correctly. You should buy some elastic and sew this on the edge of the sheet that you have cut in half. On the corner of the sheet, you will need to cut this up and sew it together to form the corner so that it fits on your bed.


She said that you may need to add a stop of material to the site you are sewing the elastic on so that it fits correctly on the bed and does not pull up. When you cut the sheet and sew the new elastic on the sheet it will make the sheet smaller than the original size. By adding a small piece of material to the corner and side of the sheet before adding the elastic will ensure the sheet fits the bed correctly.

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Silver Post Medal for All Time! 267 Posts
October 21, 20201 found this helpful
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My concern about this idea is that you wouldn't have the overlap in the middle for the sheet sides that wrap around the inner part of the mattresses. You might be able to use flat sheets but the fitted ones haven't taken into account the extra foot or so if you just cut them in half.


I would measure the width + the depth and add about 6 inches for the sheet to tuck underneath. Once you have this measurement, you can see if the original sheets have enough material for this project.

Good luck!

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October 21, 20202 found this helpful
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I believe you would have to add additional material to one whole side to have enough material to cover each twin bed.
Normally these split king beds will need a fitted twin Xl sheet so you can get measurements of this size sheet to determine how much material you would have to add to make it fit.


General measurements of twin Xl fitted sheet:
39 in. x 80 in but not sure exactly.
I think this would be a lot more work than it sounds like and not sure you would like it when finished.
I have never tried this so I'm only doing some 'thinking' here.

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October 22, 20201 found this helpful
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I sew, and I think it would be more work and expense than it's worth. To begin, fabric and elastic prices have gone up significantly and those items are even scarce in some areas, because many have gone into the covid19 mask business. I would buy 2 xl twin fitted sheets to coordinate with your existing flat sheets/pillowcases.


They often go on sale during back to school sales, as they are the size used in dorms. You can recycle your old king fitted sheet to use to cover furniture when painting or in the car when transporting plants, pets or any other thing that might shed.

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2 More Questions

Ask a QuestionHere are the questions asked by community members. Read on to see the answers provided by the ThriftyFun community or ask a new question.

November 14, 2021

How to make a split king adjustable bed using 2 flat sheets? A single king flat sheet gets pulled off from the level side of the bed to the other elevated head. I've tried folding each side along the split (which doesn't always look flat under a king bedspread).

I saw a trick of overlapping onto the other side, but haven't found that website again (did I forget there was a bookmark button?) Any suggestions?


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December 4, 20211 found this helpful
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Because a split king adjustable bed is made up of two separate mattresses, each one needs its own fitted bed sheet for the best results. A split king mattress needs 2 twin fitted sheets and 1 king flat sheet. You can use regulat sheets instead of twin fitted sheets, but then youd have to wrestle your sheets every time you place your adjustable bed in a different position. Regular sheets are designed for beds that remain flat, which is not something adjustable beds are for.


Using regular sheets on an adjustable base would cause the sheets to wrinkle and bulk up in the middle and slip off at the corners. But you can clip flat sheets with sheet straps, or suspenders underneath the mattresses secure your sheets. Make sure the dimensions of the sheets are such that they fit tightly around your mattresses.
Take a sheet and place it over one part of your split king adjustable bed. Take the sides of the sheet and firmly put the elastics or suspenders over the sides of your mattress, so the sheet doesn't move.
Add a regular king-size top sheet.
Add your king bedspread.

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April 13, 2009

How can I decrease a king fitted sheet to a queen?

By Karen from Winona, WV


April 13, 20090 found this helpful

I had a valance which was a king size, my bed was a double, all I done was sew a seam straight up the middle, after I had measured it, then cut off the excess, worked like a charm.

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April 14, 20092 found this helpful

I did it on all of my king sheets when I changed to a queen bed. I made the seam right where it went over the side of the bed. That way you never had to lay on the seam. I just put it on the bed inside out, pulled tight, then folded it to fit and marked with pins. I stitched it on the machine.

I also had an electric mattress pad. For that I just folded the excess under the mattress and pinned it to itself.

It's been about 10 years and all of these are still working fine. I hang my sheets on the line, and they last forever. Even in the winter there are warm days when you can hang them out.

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April 16, 20090 found this helpful

Thanks for sharing,good luck.

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February 1, 20180 found this helpful

I wish I had followed the advice of someone who said to sew the sheet up the middle. I've worked on the sheet off and on for three days and I still can't get the corners right. Clearly you need to reduce the sheet by 16" (the difference in width btwn King and Queen) and I sewed the fold over 8" from corner to corner. That left me with a ton of extra material to deal with at the corners and I still haven't figured out just how to sew them. Maybe I'm being a perfectionist, but when cotton sheets cost $60 and up it doesn't make sense to throw them away, nor do I want to do a lousy job.

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July 5, 20180 found this helpful

E have the same problem and can't figure out the corners. Bummer . Maybe I'll just hem it and tuck all the extra in...

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January 8, 20201 found this helpful

I will be using my extra fabric for making throw pillows.

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February 6, 20211 found this helpful

I make a pair of pillow cases from king size bed sheets to make queen size. Always work for me

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