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Yarn Calculator

Calculate yarn needed for your knitting or crochet project

Unit System

Yarn Needed

1610 yards

Needle size: US 7-9 • ~55 yards/oz

Yarn Needed for Sweater (Adult M)

Recommended (with 15% buffer)

1610

yards

Minimum Yards

1400

Meters

1280

Weight

25.5 oz

722g

Skeins Needed

7

at 220 yds each

Yarn Breakdown

Minimum Yards1,400
With Buffer (15%)1,610
Skeins Needed7
Weight (grams)722

Yarn Weight Guide

#WeightNeedleYds/oz
0LaceUS 000-1~150
1Fingering/SockUS 1-3~100
2SportUS 3-5~80
3DK/Light WorstedUS 5-7~65
4WorstedUS 7-9~55
5BulkyUS 9-11~35
6-7Super BulkyUS 11-17~20

Tips for Buying Yarn

1

Buy all skeins from the same dye lot to ensure color consistency

2

Add 15-20% extra for colorwork, cables, or textured stitches

3

Keep one label with your project notes for reference

4

Lace and fingering weights need more yardage but less total weight

5

Consider buying one extra skein - you can always return unused yarn

What You'll Need

36PCS Bamboo Knitting Needles Set 9 Inches

36PCS Bamboo Knitting Needles Set 9 Inches

$7-$104.5
View on Amazon
Coopay Bamboo Crochet Hooks Comfort Grip Set

Coopay Bamboo Crochet Hooks Comfort Grip Set

$14-$184.6
View on Amazon
Susan Bates Digital Row Counter

Susan Bates Digital Row Counter

$8-$124
View on Amazon
KOKNIT Crochet Hooks Set 71pc with Storage Case

KOKNIT Crochet Hooks Set 71pc with Storage Case

$16-$204.8
View on Amazon
HOMEST XL Yarn Storage Bag with Removable Dividers, Floral

HOMEST XL Yarn Storage Bag with Removable Dividers, Floral

$18-$254.6
View on Amazon
KnitIQ Blocking Mats 9-Pack Double-Sided with 100 T-Pins

KnitIQ Blocking Mats 9-Pack Double-Sided with 100 T-Pins

$25-$354.6
View on Amazon
36PCS Bamboo Knitting Needles Set 9 Inches

36PCS Bamboo Knitting Needles Set 9 Inches

$7-$104.5
View on Amazon
Coopay Bamboo Crochet Hooks Comfort Grip Set

Coopay Bamboo Crochet Hooks Comfort Grip Set

$14-$184.6
View on Amazon
Susan Bates Digital Row Counter

Susan Bates Digital Row Counter

$8-$124
View on Amazon
KOKNIT Crochet Hooks Set 71pc with Storage Case

KOKNIT Crochet Hooks Set 71pc with Storage Case

$16-$204.8
View on Amazon
HOMEST XL Yarn Storage Bag with Removable Dividers, Floral

HOMEST XL Yarn Storage Bag with Removable Dividers, Floral

$18-$254.6
View on Amazon
KnitIQ Blocking Mats 9-Pack Double-Sided with 100 T-Pins

KnitIQ Blocking Mats 9-Pack Double-Sided with 100 T-Pins

$25-$354.6
View on Amazon

As an Amazon Associate, we earn from qualifying purchases.

Example Calculations

1Worsted Sweater (Adult Medium)

Inputs

ProjectSweater (Adult M)
Yarn WeightWorsted (#4)
SizeM
Yards per Skein220

Result

Recommended (with 15% buffer)1,610 yards
Minimum Yards1,400
Meters1,280
Weight25.5 oz (723g)
Skeins Needed7

Base yards for sweater = 1,400. Worsted weight factor = 1.0, size M factor = 1.0. Yards = 1,400 × 1.0 × 1.0 = 1,400. With 15% buffer = 1,610 yards. At 220 yards/skein, you need ceil(1,400/220) = 7 skeins.

2Bulky Throw Blanket

Inputs

ProjectThrow Blanket (50" × 60")
Yarn WeightBulky (#5)
Yards per Skein150

Result

Recommended (with 15% buffer)2,990 yards
Minimum Yards2,600
Meters2,377
Weight74.3 oz (2,106g)
Skeins Needed18

Base yards for throw blanket = 2,000. Bulky weight factor = 1.3, no size factor. Yards = 2,000 × 1.3 = 2,600. With 15% buffer = 2,990 yards. At 150 yards/skein, you need ceil(2,600/150) = 18 skeins.

Frequently Asked Questions

Q

How do I calculate how much yarn I need?

Multiply the finished project area by your gauge (stitches per inch × rows per inch), then multiply by yarn per stitch. Our calculator does this automatically based on project type and size.

  • Step 1: Determine project area (length × width in inches)
  • Step 2: Multiply by stitch gauge (e.g., 18 st/4" = 4.5 st/inch)
  • Step 3: Total stitches × yarn per stitch = total yardage needed
  • Crochet uses ≈30% more yarn than knitting for the same project size
  • Always add 15% buffer for swatching, mistakes, and seaming
Q

How much yarn do I need for a blanket?

A typical throw blanket (50×60 inches) needs about 1,500-2,500 yards of worsted weight yarn. Baby blankets need 800-1,200 yards. Chunky yarn uses less yardage but more weight.

  • Baby blanket (30" × 36"): 800–1,200 yards worsted weight
  • Lap blanket (36" × 48"): 1,200–1,800 yards worsted weight
  • Throw blanket (50" × 60"): 1,500–2,500 yards worsted weight
  • Queen afghan (60" × 80"): 3,000–4,500 yards worsted weight
  • King afghan (76" × 80"): 4,000–6,000 yards worsted weight
Blanket SizeWorsted (#4)Bulky (#5)Super Bulky (#6)
Baby (30"×36")800–1,200 yd600–900 yd400–700 yd
Throw (50"×60")1,500–2,500 yd1,200–2,000 yd900–1,500 yd
Queen (60"×80")3,000–4,500 yd2,400–3,600 yd1,800–2,700 yd
King (76"×80")4,000–6,000 yd3,200–4,800 yd2,400–3,600 yd
Q

How much yarn for an adult sweater?

An adult sweater typically requires 1,200-2,000 yards depending on size and style. A simple pullover in worsted weight needs about 1,400 yards for medium size, more for larger sizes or longer sleeves.

  • Size S pullover: 1,100–1,300 yards worsted weight
  • Size M pullover: 1,300–1,500 yards worsted weight
  • Size L pullover: 1,500–1,800 yards worsted weight
  • Size XL+ pullover: 1,800–2,200 yards worsted weight
  • Cardigan adds 15–20% more yarn than a pullover of the same size
GarmentSize SSize MSize LSize XL
Pullover1,100–1,300 yd1,300–1,500 yd1,500–1,800 yd1,800–2,200 yd
Cardigan1,300–1,600 yd1,500–1,800 yd1,750–2,100 yd2,100–2,500 yd
Vest600–800 yd700–900 yd850–1,050 yd1,000–1,300 yd
Scarf (6"×60")200–300 yd200–300 yd200–300 yd200–300 yd
Q

What does yarn weight mean?

Yarn weight refers to thickness: Lace (0), Fingering (1), Sport (2), DK (3), Worsted (4), Bulky (5), Super Bulky (6), Jumbo (7). Thicker yarns knit faster but need more ounces for the same yardage.

  • Lace (#0): 2,000–2,500 yd/lb, needle US 000–1 (1.5–2.25mm)
  • Fingering (#1): 1,600–2,000 yd/lb, needle US 1–3 (2.25–3.25mm)
  • Worsted (#4): 800–1,000 yd/lb, needle US 7–8 (4.5–5.0mm)
  • Bulky (#5): 500–700 yd/lb, needle US 9–11 (5.5–8.0mm)
  • Super Bulky (#6): 300–500 yd/lb, needle US 11–17 (8.0–12.0mm)
WeightYards/100g SkeinNeedle SizeGauge (st/4")
Fingering (#1)350–450 ydUS 1–3 (2.25–3.25mm)27–32 st
DK (#3)230–270 ydUS 5–7 (3.75–4.5mm)21–26 st
Worsted (#4)200–230 ydUS 7–8 (4.5–5.0mm)16–20 st
Bulky (#5)120–160 ydUS 9–11 (5.5–8.0mm)12–15 st
Super Bulky (#6)60–110 ydUS 11–17 (8–12mm)6–11 st
Q

Should I buy extra yarn?

Always buy 10-15% more yarn than calculated to account for gauge differences, mistakes, and dye lot variations. Running out mid-project with a discontinued dye lot is a common problem.

  • Buy 10–15% extra yarn for buffer (our calculator adds 15% automatically)
  • Same dye lot: All skeins must match – color varies between lots
  • Gauge swatch uses 20–40 yards (account for this in total)
  • Colorwork and cables use 15–20% more yarn than stockinette
  • Keep receipt – most shops accept returns of unopened skeins within 30–60 days

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Last Updated: Mar 26, 2026

This calculator is provided for informational and educational purposes only. Results are estimates and should not be considered professional financial, medical, legal, or other advice. Always consult a qualified professional before making important decisions. UseCalcPro is not responsible for any actions taken based on calculator results.

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