What is thread count?

Egyptian Cotton Bed Linen on a Washing Line | scooms

What does thread count mean for sheets? Thread count refers to the number of threads woven together per square inch of fabric. The more threads woven together means a higher thread count. Read our guide to thread count for all bed linen: bed sheets, duvet covers and pillowcases.

  1. Is thread count a real thing?
  2. Is thread count important?
  3. Is higher thread count better?
  4. What is the best thread count?
  5. Why is Egyptian cotton the best cotton?



Is thread count a real thing?

Yes, thread count is a proper scientific term with strict standards. It's really not a marketing ploy! The thread is counted lengthwise (warp) and widthwise (weft). For example, 100 lengthwise threads woven with 100 widthwise threads equals 200 thread count.

Thread Count Comparison Diagram | scooms


Is thread count important?

Yes, thread count is an important factor to consider when buying bed linen. Typically, cotton materials with a higher thread count are warmer, more durable, softer or soften well over time - up to a point. But don’t just rely on thread count to indicate quality, the type of yarn and the finishing process are also equally important.


Is higher thread count better?

Thread counts for bedding typically range from 200 to 800, though 1,000 and higher thread counts do exist. Thread count is not however, the most important indicator of quality bedding, more important is the quality of the cotton threads that the bedding is woven from. You can have high thread count sheets made from poor quality cotton.

Keep an eye out for suspiciously sounding high thread count. Some manufacturers unfortunately achieve high thread counts by artificial means. Instead of counting individual threads they count each ply spun within each thread and then twist multiple yarns together. They are probably using low quality cotton that is artificially strengthened in this way. 


What is the best thread count?

Assuming that you are looking at bed linen that is made from good quality cotton, here's our guide to the best thread count:

  1. Choose 200 thread count and above - anything less will wear badly, rip and develop holes!
  2. Higher thread counts can feel overly crisp - be wary of really high thread counts over 800. This can produce very stiff sheets and covers that are not very comfortable to sleep on and are really hard to iron! 
  3. scooms picked 600 thread count - After testing various thread counts we picked 600 thread count in 100% Egyptian cotton as our favourite. It gives scooms sheets, duvet covers and pillowcases a dense and silky-soft feel, gets better with each wash and wears really well.


Why is Egyptian cotton the best cotton?

Egyptian cotton is a long staple cotton and feels luxurious while being wonderfully durable. Although it may feel a bit harder when new, Egyptian cotton improves with age and will soften each time you wash it.

Unlike most bed linen, your scooms Egyptian cotton sheet, duvet covers and pillowcases will become more comfortable to sleep with the more you use it. Well worth the investment! See our guide to Egyptian cotton or find out more in  our Egyptian cotton towel guide.




Top thread count faqs:

What is thread count?

Thread count refers to the number of threads woven together per square inch of material.

Is thread count important?

Yes, absolutely. Typically, cotton materials with a higher thread count are warmer, more durable, softer or soften well over time - up to a point.

What is the best thread count for bed linen?

600 thread count. Anything less than 200 is too thin and will wear rapidly, over 800 and it can feel too stiff. 

Author: Emily AttwoodPublished: 26 June 2018Last modified: 11 April 2024

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Bedding size guide


These are standard UK bedding measurements so if you know your mattress size, you can easily work out which duvet size you need. (Width x length.)

UK sizes Duvet size Mattress size
Single 135 x 200cm (53 x 79") 90 x 190cm (36 x 75")
Double 200 x 200cm (79 x 79") 135 x 190cm (53 x 75")
King 225 x 220cm (89 x 87") 150 x 200cm (60 x 78")
Super king 260 x 220cm (102 x 87") 180 x 200cm (72 x 78")

US/CANADA BEDDING SIZES: Approximate matches to UK sizes are US King/UK Super king, US Queen/UK King,  US Full/UK Double and US Twin/UK Single.

EUROPEAN BEDDING SIZES: Each size - Single, Double, King and Grand king - is a little larger than the UK equivalent.

Measure your mattress to see which size bedding you need: our UK v European v US mattress comparison guide.



Young children can overheat so if they are old enough to use a full size bed, we recommend using a single size 4.5 tog duvet.

 Tog rating Season / heat Feel
2.5 tog High summer / hot sleepers Light thermal insulation
4.5 tog Summer Lower thermal insulation
9 tog Spring & Autumn Cosy medium heat
All season 13.5 tog 4.5 tog + 9 tog Very warm
All season 11.5 tog 2.5 tog + 9 tog Warm
All season 7 tog 2.5 tog + 4.5 tog Lower warmth



Our goose down duvets have high 700 fill power. Fill weight is measured in GSM (grams per square metre). For example view our 9 tog king size goose down duvet for more duvet details.

Fill weight (not total duvet weight)
Single All seasons - 788gsm
9 tog - 486gsm 
4.5 tog - 302gsm 
2.5 tog - 220gsm
Double All seasons - 1168gsm
9 tog - 720gsm
4.5 tog - 448gsm
2.5 tog - 320gsm
King All seasons - 1478gsm
9 tog - 911gsm
4.5 tog - 567gsm
2.5 tog - 400gsm
Super king All seasons - 1671gsm
9 tog - 1030gsm
4.5 tog - 641gsm
2.5 tog - 480gsm



Our pillows come in two sizes and two firmness options. (Width x length.)

Standard  50 x 75cm
King 50 x 90cm



Our fitted sheets are deep fit, up to 40cm / 15.7" mattress depth. And our duvet covers fasten with large, easy to use buttons. (Width x length.)

Duvet cover Fitted sheet Flat sheet Pillowcase (pair)
Single 140 x 200cm 90 x 190cm 180 x 275cm
Double 200 x 200cm 135 x 190cm 230 x 275cm 50 x 75cm (Standard)
King 230 x 220cm 150 x 200cm 275 x 275cm 50 x 90cm (King)
Super king 260 x 220cm 180 x 200cm 305 x 275cm



Our mattress protectors are deep fit, up to 40cm mattress depth. Choose the same size topper or protector as your mattress size. (Width x length.)

Topper / protector size Mattress size
Single 90 x 190cm 90 x 190cm
Double 135 x 190cm 135 x 190cm
King 150 x 200cm 150 x 200cm
Super king 180 x 200cm 180 x 200cm 


£10 off your first order over £200!

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