How Much Sport Weight Yarn Do I Need To Knit A Sweater? [Answers for 5 Sizes]

By Jodie Morgan

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Our included yarn calculation table gives you quick answers to the question – How much sport weight yarn do I need to knit a sweater? No running out of yarn!

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I reviewed, fact checked and updated this post on May 17, 2023.

Table Of Contents

I recommend using a pattern to knit a sweater. The designer gives the yarn weight and yardage of the yarn they used and often yarn alternatives. The example pattern I’m using is the Keiko Sweater by Sari Nordlund. It’s a great option for beginners.

Note: In this pattern, the sport weight yarn is held double. This creates a thicker fabric. Sock yarn fibers held double creates a sport weight thickness.

Here’s my handy guide to how much yarn for knitting a sweater in 5 sizes and yards of yarn required when using the example pattern in sport weight #3 yarn.

How Much Sport Weight Yarn Do I Need For A Sweater?

Size Extra Small

To knit a sweater with finished chest measurements of 36 inches (93 cm) using the example pattern, you need a minimum of 2012 yards (1840 meters) of sport weight #3 yarn. A total weight of 19.8 oz (550 g). Number of skeins is 11 skeins (each skein weighs 1.8 oz – 50 g).

Size XS Sweater Yarn Estimates
With Sport Weight Yarn (#3)

Final Size (In)

36 inches

Final Size (Cm)

93 cm

Estimated Yardage

2012 yards

Estimated Meterage

1840 meters

Estimated Ounces

19.8 oz

Estimated Grams

550 g

Estimated Skeins

11 skeins

Size Small

To knit a sweater with finished chest measurements of 39 inches (100 cm) using the example pattern, you need a minimum of 2190 yards (2100 meters) of sport weight #3 yarn. A total weight of 21.6 oz (600 g). Number of skeins is 12 skeins (each skein weighs 1.8 oz – 50 g).

Size S Sweater Yarn Estimates
With Sport Weight Yarn (#3)

Final Size (In)

39 inches

Final Size (Cm)

100 cm

Estimated Yardage

2190 yards

Estimated Meterage

2000 meters

Estimated Ounces

21.6 oz

Estimated Grams

600 g

Estimated Skeins

12 skeins

Size Medium

To knit a sweater with finished chest measurements of 41 inches (105 cm) using the example pattern, you need a minimum of 2300 yards (2100 meters) of sport weight #3 yarn. A total weight of 21.6 oz (600 g). Number of skeins is 12 skeins (each skein weighs 1.8 oz – 50 g).

Size M Sweater Yarn Estimates
With Sport Weight Yarn (#3)

Final Size (In)

41 inches

Final Size (Cm)

105 cm

Estimated Yardage

2300 yards

Estimated Meterage

2100 meters

Estimated Ounces

21.6 oz

Estimated Grams

600 g

Estimated Skeins

12 skeins

Size Large

To knit a sweater with finished chest measurements of 44 inches (112 cm) using the example pattern, you need a minimum of 2360 yards (2400 meters) of sport weight #3 yarn. A total weight of 25.2 oz (700 g). Number of skeins is 14 skeins (each skein weighs 1.8 oz – 50 g).

Size L Sweater Yarn Estimates
With Sport Weight Yarn (#3)

Final Size (In)

44 inches

Final Size (Cm)

112 cm

Estimated Yardage

2630 yards

Estimated Meterage

2400 meters

Estimated Ounces

25.2 oz

Estimated Grams

700 g

Estimated Skeins

14 skeins

Size Extra Large

To knit a sweater with finished chest measurements of 48 inches (124 cm) using the example pattern, you need a minimum of 2960 yards (2700 meters) of sport weight #3 yarn. A total weight of 28.8 oz (800 g). Number of skeins is 16 skeins (each skein weighs 1.8 oz – 50 g).

Size XL Sweater Yarn Estimates
With Sport Weight Yarn (#3)

Final Size (In)

48 inches

Final Size (Cm)

124 cm

Estimated Yardage

2960 yards

Estimated Meterage

2700 meters

Estimated Ounces

28.8 oz

Estimated Grams

800 g

Estimated Skeins

16 skeins

How Many Yards Of Sport Weight Yarn Do I Need to Knit A Sweater?

To knit a sweater with finished chest measurements of 41″ (105 cm) using the example pattern, you need a minimum of 2300 yards (2100 meters) of sport weight #3 yarn.

How Many Skeins Of Sport Weight Yarn Do I Need For A Sweater?

To knit a sweater with finished chest measurements of 41″ (105 cm) using the example pattern, you need a minimum of 12 skeins of sport weight #3 yarn. (Each skein weighs 1.8 oz – 50 g).

How Many Balls Of Sport Weight Yarn Do I Need For A Sweater?

To knit a sweater with finished chest measurements of 41″ (105 cm) using the example pattern, you need a minimum of 12 balls of sport weight #3 yarn. (Each skein weighs 1.8 oz – 50 g).

How Many Ounces Of Sport Weight Yarn For A Sweater?

To knit a sweater with finished chest measurements of 41″ (105cm) using the example pattern, you need a minimum of 21.6 oz (600 g) of sport weight #3 yarn. 

Pin For Later

How Much Sport Weight Yarn For Sweater Pin

Conclusion

Now you know how much yarn you need to knit a sweater, it’s time to start your next project! You might even consider a thicker weight option for more information on an aran yarn sweater see here.

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About The Author

Jodie Morgan From Knit Like Granny

Jodie Morgan (Author & Founder)

jodie@knitlikegranny.com | Lives In: Regional Australia

Author: Jodie Morgan is a passionate knitter and blogger with 40+ years of experience currently living in regional Australia. Taught by her mother and wonderful grandmother “Mama”, she fell in love with crafting from a young age. When she’s not knitting, you’ll find her enjoying a cup of coffee with cream, or sharing helpful resources and tips with the online knitting community. Get to know Jodie and the team on our meet the team page.

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