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How to sew a giant blanket

sew huge fleece blanket

Weather is kind of freezing right now…yep even here in Mexico!!! So a huge, fluffy and comfy bedcover sounds like heaven! Maybe it will make it even harder to wake up in the morning…

The blanket is quite easy to sew, but does take a lot of time! It’s a simple design, perfect if you’re a novice sewer. Basically you have to cut a bunch of triangles a sew them together to make rows and then sew the rows together.

Cutting the fleece into triangles allow you to create the blanket the size you need, you are not limited by the fabric width. And instead of having a plain boring blanket you will have a nice textured cover.

Lay the blanket on your bed, add a few cushions and your bedroom will instantly be transformed into the most comfortable place in the house.

How to sew a huge fleece blanket

The materials you will need:

  • 7 yards of fleece fabric for the top side
  • 7 yards of fleece fabric for the liner
  • Matching thread
  • Scissors
  • Sewing machine
  • A ruler and a pencil to make the template

fleece blanket pattern


The blanket dimensions are made for a king-size bed. You have to choose two fabric, one for the outside and one for the liner. I picked a grey fluffy fleece and a white polar fleece as a liner. You will need 7 yard / 6 meters of each fabric (for 5 ft. / 1.5 meter wide fabric).

The first big job is cutting all the triangles, which means 120 pieces! Trace a 20 inches side equilateral triangle on a cardboard piece and use it as a template to report the shape on the fabric.

triangle template for blanket

Cut out all your triangles. You will need 60 triangles and 10 half triangles in both fabrics. It’s time consuming and quite messy but don’t give up it totally worth it!

fleece pieces

Start sewing the triangles together to make a row (like the yellow shape on the sketch). Place a fabric triangle right side down, and on top a liner triangle right side up. Then put a second liner triangle wrong side up and finish with a fabric triangle right side up. Pin and sew one side.

sewing blanket pieces

Open the triangles and sew the next ones. A liner triangle right side down and on top a fabric triangle right side up. Pin the edge and sew.

sew blanket

And repeat until you completed a row of 10 triangles (fabric and liner). Finish the row with half triangles on each side to have straight edges.

blanket first row

From this point, you have to do the same thing to sew the second row of 10 triangles. Once your two first rows are sewn, place them on top of each other with the liner inwards, pin and sew one side lengthwise.

diy fleece blanket

Then sew a third, fourth, fifth and sixth row of 10 triangles (don’t forget the half triangles at each end). And sew all the rows side by side to complete your bed cover. Once you are done, you can trim each triangle tip for a nicer finish.

Tadaaaaaam! My giant blanket! You can imagine how warm it is with the two fleeces layers. It’s soft, cozy and nice looking. It makes it harder to get out of bed! I share some other pic in the bedroom below.

diy giant fleece balnket

Looking for more sewing ideas?

You will find all the tutorials featured in this video on my Best off-page.

DIY fleece blanket cover

I love it!!! You can find all the DIY from this pic (and more) in the bedroom makeover post.

sew fleece blanket

diy warm blanket

diy fleece blanket

Have fun sewing!



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    • * * * / * * *

      Thanks Maria! I had a look at your blog, very nice and awesome pictures!

  1. * * * / * * *

    I love this! Got a few questions: would it work to use fleece for the liner, what size seams would you use, and could it be done by starting with large squares sewn and then cut into triangles?

    • * * * / * * *

      It can be a good idea! Or you can also sew the squares together. I think it will makes an interesting pattern too. I used white fleece as liner and the seam size is about 1/2 inch.

  2. * * * / * * *

    Did you finish the outside edges? I just made a fleece blanket,using a similar technique, but am wavering on how to finish the edges(if at all).

    • * * * / * * *

      Hello Anne, I didn't sewn the outside edges. The two fleece fabrics kind of stick together so I choose the lazy option: no sewing.

  3. * * * / * * *

    This rocks! thks so much for the tutorial…

  4. Anonymous
    * * * / * * *

    H! I love this blanket!I would love to make one but am having a hard time finding fleece similar to yours. What kind is it and where did you find it? Thanks for your help!

    • * * * / * * *

      It's like a fur fleece. I live in Mexico so I bought it at Moda Tela…I'm not sure it's gonna help you. Now that cold winter is back, it's maybe easier to find fleece at fabric store. Good luck!

  5. Jennie Richardson
    * * * / * * *

    I love this blanket will be trying in a queen size

    • amaryllis
      * * * / * * *

      Hello Jennie, I’m glad you like it! Having a cozy warm blanket is absolutely necessary, in my opinion, to survive winter time! Let me know how it turns!

  6. Shelly
    * * * / * * *

    Would be nice done with denim and fleece. Great way to use up old jeans

    • amaryllis
      * * * / * * *

      Hello Shelly, using denim can be a great option too…but you gonna need a lot if you want to make a king size blanket!

  7. Makayla Gross
    * * * / * * *

    Love this! Is the blanket technically double sided? White on one side and grey on the other? Or does the pattern have you sewing the grey triangles together on both sides? Just got a bit confused — may be I need to reread once I’m more awake 🤦🏼‍♀️😂

    • amaryllis
      * * * / * * *

      Hello Makayla, yes the blanket is double-sided. The seams with the edges popping up are only visible on the grey side. You can still appreciate the triangle shapes on the white side but the design is flat.