Sock Yarn Calculator

Plan a pair of socks down to the yard. Pick a size and cuff height, choose your sock yarn weight, and get a per-pair yardage and skein estimate — plus a one-skein check so you know whether that single 100g skein or self-striping cake is enough.

1. Sock size
Cuff height
Yarn weight
Craft
Refine with gauge (optional)
Stitches per inch

Socks are gauge-sensitive — a tighter gauge uses more yarn. Leave blank to use a typical gauge for the weight.

Yarn for one pair

315–426
Yards / pair
288–390
Meters
1
Skeins (100g)
Fingering
Yarn weight

Estimate for one pair of Women M crew socks in fingering weight. One 100g skein is plenty. Skein counts assume a 100g sock skein (about 437 yds in fingering) — check your yarn’s label, as yardage varies by brand.

One-skein check: is my yarn enough?

Got a single skein or a self-striping cake and not sure it covers a pair? Enter the yardage you have, then pick the socks you want to make. Sock yarn often comes in 100g skeins of roughly 400–460 yards.

Yarn you have (yds)
Sock size
Cuff height
Yarn weight
Enough for a pair
about 30 yds to spare

How much yarn for socks?

Sock typeApprox. yardage (per pair, fingering)
Baby socks50–100 yds
Ankle socks200–350 yds
Crew socks350–500 yds
Knee-high500–800+ yds

Adult averages. Larger feet, longer cuffs, and tighter gauge push toward the high end.

Sock yarn weight guide

Yarn weightCommon sock style
FingeringStandard everyday socks
SportCushier socks
DKThick house socks
WorstedSlipper socks

Sock fiber blends

FiberSock characteristics
Wool / nylonDurable — the classic sock blend
MerinoVery soft; pair with nylon for wear
AlpacaWarm, but less hard-wearing
CottonBreathable and cooler
BambooSmooth with lovely drape

Frequently asked questions

How much yarn do I need for socks?

A pair of adult crew socks in fingering weight typically needs 350–500 yards. Smaller feet and shorter cuffs use less; knee-highs and large sizes use more.

Can I make socks with one skein?

Usually yes. A 100g fingering skein (about 400–460 yards) covers most adult pairs up to crew height. Knee-highs and large men’s sizes may need a second skein. Use the one-skein check above for your exact yarn.

Does sock height change yarn usage?

A lot. A knee-high uses roughly 1.7 times the yarn of a crew sock, while no-show socks use about a third less. Set the cuff height above to see the difference.

What yarn weight is best for socks?

Fingering is the standard for everyday socks. Sport gives a cushier sock, while DK and worsted make thick house socks and slipper socks.

What is the most durable sock yarn?

Wool blended with nylon (often 75/25) is the classic hard-wearing choice. Pure merino is soft but wears faster, so it is usually blended with nylon for socks.

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The calculators and tools on Formula Factory are provided for general guidance and informational purposes only. Results are estimates based on standard formulas and the values you enter — they do not constitute professional engineering, electrical, or architectural advice. Always verify calculations with a qualified professional before making decisions for any safety-critical, code-compliance, or commercial application. Formula Factory makes no representations or warranties as to the accuracy or completeness of any result, and accepts no liability for errors, omissions, or any outcomes arising from reliance on this information.