Microcosm Publishing & Distribution
Math for Knitters
Math for Knitters
Stop letting numbers intimidate you.
In Math for Knitters, Kate Atherley, author of Custom-Fit Hats, breaks down the essential calculations every knitter needs to understand in order to knit with confidence. This practical, approachable guide turns gauge, yardage, shaping, and resizing into straightforward arithmetic you can actually use.
Learn what gauge really means and how to adjust when yours does not match the pattern. Substitute yarns without fear of running short. Resize garments for a better fit by adjusting length, shaping, and edgings with intention. Whether you are modifying a neckline, distributing increases evenly, or recalculating yardage for a different weight of yarn, this book shows you how.
Clear explanations and step-by-step examples make the math manageable, even if numbers are not your favorite part of knitting.
If you want more freedom in your pattern choices and better fitting finished pieces, this is the book that gets you there.
Place a new order anytime and we’ll combine shipments plus refund extra shipping costs when your orders ship.
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Yardage Information
Yardage Information
LACE WEIGHT
VELA LACE
Weight: Lace (0) • 874 yds / 800 m per 100g
Fiber: 75% Extra Fine Superwash Merino Wool (19.5 micron), 25% Mulberry Silk
Needles: US 0–3 (2.0–3.25 mm)
Hook: B–D (2.25–3.25 mm)
Care: Hand wash cold. Lay flat to dry.
PLUMA MOHAIR
Weight: Lace (0) • 1 ply • 459 yds / 420 m per 50g
Fiber: 75% Baby Suri Alpaca, 25% Mulberry Silk
Needles: US 0–3 (2.0–3.25 mm)
Hook: B–D (2.25–3.25 mm)
Care: Hand wash cold. Lay flat to dry.
FINGERING WEIGHT
SNOWDRIFT SELECT SOCK
Weight: Fingering / Sock (1) • 4 ply • 437 yds / 400 m per 100g
Fiber: 75% Superwash Wool (21 micron), 25% Nylon
Needles: US 1–3 (2.25–3.25 mm)
Hook: B–E (2.25–3.5 mm)
Care: Machine or hand wash cold. Lay flat to dry.
SNOWDRIFT SELECT SOCK 50G
Weight: Fingering / Sock (1) • 4 ply • 218 yds / 200 m per 50g
Fiber: 75% Superwash Wool (21 micron), 25% Nylon
Needles: US 1–3 (2.25–3.25 mm)
Hook: B–E (2.25–3.5 mm)
Care: Machine or hand wash cold. Lay flat to dry.
BISQUE FINGERING
Weight: Fingering (1) • 437 yds / 400 m per 100g
Fiber: 100% Fine Superwash Wool (21 micron)
Needles: US 1–3 (2.25–3.25 mm)
Hook: B–E (2.25–3.5 mm)
Care: Machine or hand wash cold. Lay flat to dry.
OPAL FINGERING
Weight: Fingering • 437 yds / 400 m per 100g
Fiber: 50% Fine Superwash Wool (21 micron), 50% Mulberry Silk
Needles: US 1–3 (2.25–3.25 mm)
Hook: B–E (2.25–3.5 mm)
Care: Hand wash cold. Lay flat to dry.
YASMIN FINGERING
Weight: Fingering • 1 ply • 437 yds / 400 m per 100g
Fiber: 80% Extra Fine Superwash Merino Wool 19.5 MIC. 10% Yak (Grey)10% Silk
Needles: US 1–4 (2.25–3.5 mm)
Hook: B–E (2.25–3.5 mm)
Care: Hand wash cold. Lay flat to dry.
MAGNOLIA FINGERING
Weight: Fingering • 1 ply • 383 yds / 350 m per 100g
Fiber: 60% Fine Superwash Merino, 20% Superkid Mohair, 20% Mulberry Silk
Needles: US 1–4 (2.25–3.5 mm)
Hook: B–E (2.25–3.5 mm)
Care: Hand wash cold. Lay flat to dry.
SOLEIL FINGERING
Weight: Fingering (1) • 437 yds / 400 m per 100g
Fiber: 50% Fine Superwash Merino Wool (21.5 micron), 50% Pima Cotton
Needles: US 1–3 (2.25–3.25 mm)
Hook: B–E (2.25–3.5 mm)
Care: Machine or hand wash cold. Lay flat to dry.
SILVER GLITTER SOCK
Weight: Fingering • 437 yds / 400 m per 100g
Fiber: 75% Superwash Wool (21 micron), 20% Nylon, 5% Silver Stellina
Needles: US 1–3 (2.25–3.25 mm)
Needles: US 1–3 (2.25–3.25 mm)
Hook: B–E (2.25–3.5 mm)
Care: Hand wash cold. Lay flat to dry.
GOLD GLITTER SOCK
Weight: Fingering / Sock (1) • 4 ply • 437 yds / 400 m per 100g
Fiber: 75% Superwash Wool (21 micron), 20% Nylon, 5% Gold Stellina
Needles: US 1–3 (2.25–3.25 mm)
Hook: B–E (2.25–3.5 mm)
Care: Machine or hand wash cold. Lay flat to dry.
SPORT WEIGHT
BUTTERCREAM SPORT
Weight: Sport (2) • 3 ply • 328 yds / 300 m per 100g
WPI: 20
Fiber: 100% Superwash Wool (21 micron)
Needle size: 3mm
Gauge: 28 sts & 40 rows
Care: Machine or hand wash cold. Lay flat to dry.
DK WEIGHT
MARSHMALLOW SELECT DK
Weight: DK (3) • 4 ply • 246 yds / 225 m per 100g
Fiber: 100% Superwash Wool (21 micron)
Needles: US 5–7 (3.75–4.5 mm)
Hook: F–I (3.75–5.5 mm)
Care: Machine or hand wash cold. Lay flat to dry.
MARSHMALLOW SELECT DK 50G
Weight: DK (3) • 4 ply • 123 yds / 112 m per 50g
Fiber: 100% Superwash Wool (21 micron)
Needles: US 5–7 (3.75–4.5 mm)
Hook: F–I (3.75–5.5 mm)
Care: Machine or hand wash cold. Lay flat to dry.
VOTIVE DK
Weight: DK (3) • 4 ply • 246 yds / 225 m per 100g
Fiber: 80% Extra Fine Superwash Merino, 10% Cashmere, 10% Recycled Nylon
Needles: US 5–7 (3.75–4.5 mm)
Hook: F–I (3.75–5.5 mm)
Care: Machine or hand wash cold. Lay flat to dry.
FIESTA DK
Weight: DK (3) • 232 yds / 212 m per 100g
Fiber: 85% Extra Fine Superwash Merino Wool (19.5 micron), 15% Donegal Neon Tweed Nep
Needles: US 5–7 (3.75–4.5 mm)
Hook: F–I (3.75–5.5 mm)
Care: Machine or hand wash cold. Lay flat to dry.
SOLEIL DK
Weight: DK (3) • 246 yds / 200 m per 100g
Fiber: 50% Fine Superwash Merino Wool (21.5 micron), 50% Pima Cotton
Needles: US 5–7 (3.75–4.5 mm)
Hook: F–I (3.75–5.5 mm)
Care: Machine or hand wash cold. Lay flat to dry.
WORSTED WEIGHT
MARSHMALLOW SELECT WORSTED
Weight: Worsted (4) • 4 ply • 219 yds / 200 m per 100g
Fiber: 100% Superwash Merino Wool
Needles: US 7–9 (4.5–5.5 mm)
Hook: I–K (5.5–6.5 mm)
Care: Machine or hand wash cold. Lay flat to dry.
BULKY WEIGHT
SALCANTAY BULKY
Weight: Bulky (5) • 2 ply • 109 yds / 100 m per 100g
Fiber: 100% Fine Superwash Merino Wool
Needles: US 9–11 (5.5–8 mm)
Hook: K–M (6.5–9 mm)
Care: Machine or hand wash cold. Lay flat to dry.
How much yarn do I need?
How much yarn do I need?
Lace (800–1200 yds per 100g)
• Lace shawl or wrap: 800–1200 yds
• Lightweight scarf: 600–900 yd
• Laceweight cardigan: 1400–1800 yds
Fingering / Sock Weight (400–465 yds per 100g)
• Socks: 350–425 yds
• Shawlette or small wrap: 350–500 yds
• Hat or mitts: 180–250 yds
• Lightweight sweater (adult): 1000–1600 yds
Sport Weight (320–350 yds per 100g)
• Hat: 150–250 yds
• Cowl or infinity scarf: 250–400 yds
• Baby blanket or garment: 500–900 yds
• Adult sweater: 900–1300 yds
DK Weight (230–280 yds per 100g)
• Beanie: 180–250 yds
• Cowl or scarf: 250–450 yds
• Baby sweater: 400–600 yds
• Adult sweater: 1000–1500 yds
Worsted / Aran Weight (180–220 yds per 100g)
• Beanie: 150–200 yds
• Cowl: 180–300 yds
• Scarf: 400–600 yds
• Adult sweater: 900–1400 yds
• Throw blanket: 1500–2500 yds
Bulky / Super Bulky (100–140 yds per 100g)
• Hat: 90–150 yds
• Cowl: 120–200 yds
• Chunky scarf: 250–400 yds
• Lap blanket: 600–1000 yds
• Oversized cardigan: 800–1200 yds
Care Instructions
Care Instructions
Care Instructions
Non-superwash wool must always be hand washed in cool water with a mild wool wash and laid flat to dry. Do not machine wash, as it will felt and shrink with heat or agitation.
Superwash yarns can be hand washed in cool water for the best longevity, but they may also be machine washed on a gentle cycle inside a garment bag. Always lay flat to dry.
Avoid bleach, fabric softeners, and high heat, as these can damage the fibers.
Blend-Specific Notes
Sock yarns with nylon (such as Snowdrift Select Sock) are more durable and tolerate gentle machine washing, though hand washing will still extend the life of your project.
Glitter yarns with Stellina (such as Gold Glitter and Silver Glitter) should be handled gently; avoid wringing or twisting to protect the sparkle filament.
Bulky yarns (such as Salcantay Bulky) are heavier when wet and should be fully supported while drying flat to prevent stretching.
Hand-Dyed Yarn Notes
Hand-Dyed Yarn Notes
Colors may be slightly different than actual product as computer and device monitor settings can alter the color appearance. We do our best to ensure that the yarns appear as they do in real life.
Our yarns are hand-dyed in small batches, so slight variations may occur between skeins. For larger projects, we recommend alternating skeins every few rows to blend color shifts.
While every effort is made to set dye thoroughly, some color transfer may occur on the first wash, especially with highly saturated shades. Wash separately the first time.
Yarn is dyed in limited lots, and colors may vary slightly from batch to batch. Please be sure to purchase enough for your project at once.
Large orders placed together will be dyed in the same session to ensure the closest possible match.
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