Baby makes

How much wool for a knitted baby jumper?

Up to about 9 months, the age-sized DK baby jumper patterns we could check list 285–495 m of yarn, which is two 100 g balls of Paintbox Simply DK (276 m a ball). Aran-weight designs list more: a median of 375 m at 3 months and 560–579 m at 12 and 18 months. DK data is thin, with only two age-sized designs, so read the tables as a starting point and check your own pattern’s quantity before buying. All but one of the patterns are from US or Canadian yarn brands. The exception is Sirdar 5486, so these are pattern allocations, not a survey of UK practice.

HazelLoop planning guide · Updated 2 November 2026 · Figures from cited sources

Save to Pinterest

DK baby jumpers: how many metres and balls?

Only two free DK jumper patterns with age sizes and a stated ball length were open to us. Berroco’s Baby Poonam lists 2 (3-3) balls of Comfort DK at 165 m each, so 330 m for newborn (3 months) and 495 m for 6 and 9 months. Berroco classes Comfort DK as a light DK/sport yarn. Sirdar 5486 lists 3 balls of Snuggly Baby Bamboo DK (95 m) up to 9 months and 4 balls from 9–12 to 18–24 months, so 285 m and then 380 m. It is a short-sleeved design (a round-neck and a collared version share the same quantities), so a long-sleeved jumper in the same yarn would need more.

Cascade’s Lopez Island Pullover gives finished chest sizes from 46 to 56 cm but no ages. It lists 2 skeins of Cherub DK (165 m) for every size, so 330 m in each case. That fits within the same 285–495 m band.

One 100 g ball of Simply DK is 276 m, which is just short of the smallest DK quantity here (285 m). Every DK size in the tables comes to two 100 g balls once you round up. Above 18 months we found only Sirdar’s 18–24 months size (380 m), which has short sleeves.

DK patterns checked, quantities as stated. Metres = balls × stated metres per ball. Last column: 100 g balls of Paintbox Simply DK (276 m), rounded up.
Design	Sizes (chest)	Stated quantity	Metres per size	Simply DK balls
Baby Poonam (Berroco)	Newborn (3 months) / 6 months / 9 months; finished chest 48 / 53 / 58 cm	2 (3-3) balls Comfort DK, 50 g / 165 m	330 / 495 / 495 m	2 / 2 / 2
Short Sleeved Baby Sweater 5486 (Sirdar)	0–3 / 3–6 / 6–9 / 9–12 / 12–18 / 18–24 months; finished chest 46 / 50 / 54 / 56 / 58 / 60 cm	3 (3, 3, 4, 4, 4) balls Snuggly Baby Bamboo DK, 50 g / 95 m	285 / 285 / 285 / 380 / 380 / 380 m	2 for every size
Lopez Island Pullover (Cascade)	No age labels; finished chest 46 / 48 / 51 / 56 cm	2 (2, 2, 2) skeins Cherub DK, 50 g / 165 m	330 m for every size	2

Download this table (CSV) · free to reuse with a link to HazelLoop

DK summary by age, using the two age-sized DK designs. Data is thin: one or two patterns per age, and only Sirdar’s short-sleeved 18–24 months size at 2 years. Each pattern’s own figure is shown instead of a median.
Age	Patterns	Metres by pattern	Simply DK balls (100 g, 276 m)
Around 3 months	2	285 m (Sirdar, short sleeves) / 330 m (Berroco)	2
Around 6 months	2	285 m (Sirdar, short sleeves) / 495 m (Berroco)	2
Around 9 months	2	285 m (Sirdar, short sleeves) / 495 m (Berroco)	2
Around 12 months	1	380 m (Sirdar, short sleeves)	2
Around 18 months	1	380 m (Sirdar, short sleeves)	2
Around 24 months (2 years)	1	380 m (Sirdar 18–24 months, short sleeves)	2

Download this table (CSV) · free to reuse with a link to HazelLoop

Aran-weight baby jumpers: more data, bigger numbers

Six free one-colour patterns in aran or US worsted weight gave age sizes and ball lengths. The median is 375 m at 3 months, 440 m at 6 months, 550 m at 9 months, 579 m at 12 months and 560 m at 18 months. In 100 g balls of Paintbox Simply Aran (184 m), that is three balls up to 9 months and four at 12 and 18 months. At the top of the range, that becomes four balls at 6 and 9 months and five at 18 months. At 9 months the median uses almost all of three balls.

The spread is wide because patterns allocate whole balls. Berroco’s Simpull and Bob use the same yarn and the same chest sizes, yet at 6 months one lists two balls (386 m) and the other three (579 m). Bob also has cables. Your pattern’s own number is more reliable than any average. Only one design, Red Heart’s Simple Baby Pullover, goes up to 24 months, listing 746 m.

Aran and US worsted-weight patterns checked, quantities as stated. Metres = balls × stated metres per ball.
Design	Sizes (chest)	Stated quantity	Metres per size
Simpull (Berroco)	3 / 6 / 9 / 12 months; chest 48 / 53 / 58 / 64 cm	2 (2-2-3) balls Comfort, 100 g / 193 m	386 / 386 / 386 / 579 m
Bob, jumper quantity only (Berroco)	3 / 6 / 9 / 12 months; chest 48 / 53 / 58 / 64 cm	2 (3-3-3) balls Comfort, 100 g / 193 m	386 / 579 / 579 / 579 m
Baby Athos (Berroco)	Newborn (3 months) / 6 / 9 months; chest 48 / 53 / 58 cm	3 (4-5) balls Love It, 50 g / 110 m	330 / 440 / 550 m
Baby’s Pullover (Bernat)	3 / 6 / 12 / 18 months; finished chest 48 / 51 / 53.5 / 56 cm	2, 2, 2, 3 balls Satin, 100 g / 182 m	364 / 364 / 364 / 546 m
Daniel’s Pullover (Cascade, Melissa Leapman)	6 / 12 / 18 months; chest 56 / 62 / 69 cm	3 (3, 4) skeins 220 Superwash Merino, 100 g / 200 m	600 / 600 / 800 m
Simple Baby Pullover (Red Heart, Heather Lodinsky)	12 / 18 / 24 months; finished chest 58 / 64 / 69 cm	2 (3, 4) skeins Soft Baby Steps, 4 oz / 204 yd (186.5 m)	373 / 560 / 746 m

Download this table (CSV) · free to reuse with a link to HazelLoop

Aran summary by age. Last column: 100 g balls of Paintbox Simply Aran (184 m), rounded up, for the median and for the top of the range.
Age	Patterns	Median metres	Range	Simply Aran balls (median / top of range)
Around 3 months	4	375 m	330–386 m	3 / 3
Around 6 months	5	440 m	364–600 m	3 / 4
Around 9 months	3	550 m	386–579 m	3 / 4
Around 12 months	5	579 m	364–600 m	4 / 4
Around 18 months	3	560 m	546–800 m	4 / 5
Around 24 months	1	746 m	Simple Baby Pullover only	5

Download this table (CSV) · free to reuse with a link to HazelLoop

4 ply and sock-weight jumpers

We found three free one-colour baby jumpers in fine, sock-weight yarns (around 400 m per 100 g). They are too few for a median, so the table lists them pattern by pattern. Cascade’s Prints for Baby lists one 100 g skein (400 m) at 3 months and two (799 m) at 6 and 9 months. Berroco’s Johnny Boy lists two 100 g balls of Sox (812 m) for 9 months, 12 months and 2 years.

These are whole-skein allocations of large balls, so the jump from one skein to two may overstate the extra yarn used. For a UK 4 ply, compare the metres, not the number of balls.

Sock-weight (fine) patterns, quantities as stated. Too few for a median.
Design	Sizes (chest)	Stated quantity	Metres per size
Prints for Baby (Cascade, Susie Bonell)	3 / 6 / 9 months; finished 43 / 48 / 53 cm	1 (2, 2) skeins Heritage Prints, 100 g / 399.6 m	400 / 799 / 799 m
Johnny Boy (Berroco)	9 months / 12 months / 2 years (then 4, 6); chest 51 / 56 / 61 cm	2 (2-2-2-3) balls Sox, 100 g / 406 m	812 m for 9 months, 12 months and 2 years
Little Miss Pullover (Cascade, Cheryl Murray)	2 years (then 4, 6); chest 57 cm	1 (2, 2) skeins Heritage Tie Dye, 100 g / 400 m	400 m at 2 years

Download this table (CSV) · free to reuse with a link to HazelLoop

Crochet baby jumpers

We didn’t find enough free crochet baby jumper patterns with sized quantities and stated ball lengths to give useful figures. The one we saw, Bernat’s crochet Velvet Sweater, allocates one 300 g ball of velvet yarn for every size, which says little about real use. We have left crochet out rather than mix it with the knitted figures.

Turning the figures into a shopping list

Start with your pattern’s quantity and the metres on its ball band. Multiply balls by metres per ball, then divide by the metres on the ball you plan to buy and round up. A 50 g ball of a long-length DK and a 50 g ball of a cotton or bamboo DK can differ by 70 m or more, as Comfort DK (165 m) and Snuggly Baby Bamboo DK (95 m) show.

Check tension before you swap yarns. Baby Poonam and Sirdar 5486 are both knitted at 22 stitches to 10 cm on 4 mm needles; Red Heart’s Simple Baby Pullover is at 17 stitches and Bernat’s Baby’s Pullover at 20. A tighter or looser tension, longer sleeves or a hood all change the amount. Weigh any leftovers you plan to use and buy the rest from one dye lot.

Our sources and calculation method

We checked these free published patterns on 2 November 2026 and recorded each quantity as written. We multiplied balls or skeins by the metres stated in the pattern or on the maker’s yarn page, converting yards at 0.9144 m. Each size is grouped by the age it names; for a range we use the upper age. Berroco’s “Newborn (3 mos)” counts as 3 months; Sirdar’s 0–3, 3–6, 6–9, 9–12, 12–18 and 18–24 months sizes count as 3, 6, 9, 12, 18 and 24 months. Lopez Island gives no ages, so it is left out of the age summaries. We give medians and ranges and round ball counts up. We have not knitted or weighed any of these jumpers.

Some sources were left out. We couldn’t open DROPS pattern pages, and several UK free patterns can only be downloaded after logging in. A Red Heart set gives one quantity for jumper and hat together. A Caron design allocates 240 g balls, two balls even for 6 months. Other designs were two-colour, pinafore-style or near-copies of the same base pattern. The Sirdar quantities come from a retailer’s copy of the pattern details (Yarn.com), not from Sirdar’s own site. All the patterns except Sirdar 5486 are from US or Canadian brands, so the yarns may be hard to find in the UK. Use the metres, not the brand.

Check before you move on

Choose the pattern first, then note its quantity and ball length
Multiply balls by metres per ball for your size
Divide by your chosen yarn’s metres per ball and round up
Check tension and sleeve length before swapping yarns
Weigh usable leftovers and buy the rest from one dye lot

Try it with your own numbers.

Calculate whole balls or packs for every colour. Subtract your stash and add UK delivery.

Build my list ↗

Common questions

How many balls of DK do I need for a newborn jumper?

The two age-sized DK designs we checked list 285 m (short sleeves) and 330 m for their smallest sizes. That is two 100 g balls of Paintbox Simply DK (276 m each), rounded up.

Is one 100 g ball of DK enough for a baby jumper?

Not on the figures we found. The smallest stated amount was 285 m, for Sirdar’s short-sleeved 0–3 months size, and a 100 g ball of Simply DK has 276 m. Patterns allocate whole balls, so real use may be a little lower, but buy two.

How much aran-weight yarn does a 12-month baby jumper need?

Five aran or US worsted-weight designs with a 12-month size list 364–600 m, with a median of 579 m. That is four 100 g balls of Paintbox Simply Aran (184 m).

Why do two patterns for the same age ask for such different amounts?

Patterns allocate whole balls, and stitch patterns use different amounts. Berroco’s Simpull and Bob use the same yarn and chest sizes, but at 6 months one lists 386 m and the other 579 m.

How much yarn for a jumper for a 2-year-old?

Data is thin above 18 months. Red Heart’s Simple Baby Pullover lists 746 m of worsted-weight yarn at 24 months. Sirdar’s short-sleeved 5486 lists 380 m of DK for 18–24 months. Two sock-weight designs list 400 m and 812 m at 2 years.

Sources and scope

Patterns and yarn pages checked 2 November 2026. Quantities are the designers’ allocations, not weighed yarn. Patterns remain with their designers; the linked instructions control the project. Label facts come from the linked references; worked purchase examples and arithmetic are our own illustrations. Original pattern and product names retain their source spelling.

How much yarn do I need? All UK wool quantity guides

Keep planning

These are planning estimates, not claims of projects we have made. Read our method and editorial approach.