Woven vs Knitted Fabric: Key Differences and How to Choose

Woven vs knitted fabric is one of the first decisions in any garment brief, and it affects far more than appearance. A loom makes woven fabric by interlacing two sets of yarn at right angles. A knitting machine makes knitted fabric by pulling yarn into rows of interlocking loops. That one difference in structure decides how much the fabric stretches, how it feels on skin, how it behaves in the wash and how well a functional yarn performs in the finished product.

At VI-TEX we develop and supply functional knitting yarns, mostly for socks, underwear, knitwear and sportswear. We trial new yarns on sock machines and circular knitting machines before we talk about bulk orders, so we deal with these structure effects in daily sample work. This guide covers the practical differences and the checks we run before we recommend a yarn for either fabric type.

Woven vs Knitted Fabric at a Glance

How Looms and Knitting Machines Build Fabric

Woven fabric: two yarn systems at right angles

Weaving uses two sets of yarn. Warp yarns run along the length of the fabric and sit under tension on the loom. Weft yarns run across the width and pass over and under the warp. Every crossing point locks the yarns in place, so a woven fabric has little room to move.

The pattern of crossings gives each weave its character. In plain weave, each weft yarn goes over one warp yarn and under the next, which gives a flat, crisp and stable surface. Twill shifts the crossing by one yarn on each pass and creates a diagonal line with more drape. Satin uses long floats for a smooth, lustrous face that snags more easily. Our guide to woven fabric weave types compares these in more detail, along with honeycomb and jacquard.

Because the crossings hold every yarn, woven fabric keeps a crease, cuts accurately and gives a clean tailored line. The trade-off is stretch. Without spandex in the yarn, most wovens only give a little on the bias.

Knitted fabric: rows of interlocking loops

Knitting builds fabric from loops. Each new loop pulls through the one before it, and the loops can open, slide and close again as the fabric moves. This gives knits their stretch, recovery and soft hand, and it explains why almost every T-shirt, sock and base layer on the market is a knit.

Weft knitting runs the yarn across the fabric width, one course at a time. Circular and flat machines produce most weft knits, including single jersey, rib and interlock, and every sock machine knits this way. Weft knits stretch well, but they can curl at the edge and ladder when a loop breaks.

Warp knitting feeds many yarns at once, and each yarn forms loops along the fabric length. The result holds its width better, resists laddering and lies flat at the edge. On the other hand, it usually stretches less across the width and feels firmer. Mills use warp knits for lace, mesh, linings, sports fabrics and technical textiles.

The Yarn Behind Each Fabric

Looms and knitting machines ask different things of a yarn. A warp yarn has to survive high tension and constant friction on the loom, so weaving yarn needs high strength and very even thickness. Weaving mills usually size the warp to protect it. Knitting yarn runs through needles and sinkers at lower tension. Here buyers want a soft yarn with low hairiness, and spinners usually wax it so it slides cleanly through the knitting zone. We go further into this in our article on the differences between knitting yarn and weaving yarn.

Some yarns can do both jobs. Our 30S ring-spun polyester yarn, for example, goes into woven fabrics as well as knitted T-shirt fabrics. Even so, we ask about the end use before we send samples, because twist and waxing should suit the machine the yarn will run on.

Spinning method matters too. Compact spinning condenses the fibers before twisting, which gives a cleaner yarn surface, less hairiness and higher strength. In knits, more of the yarn surface sits exposed to rubbing, so lower hairiness usually means less pilling.

Stretch, Shape and Washing Stability

Woven fabric is dimensionally stable by nature. It cuts accurately, sews without distortion and usually comes out of the wash close to its original size. Its stretch has to come from the yarn. For stretch denim and other stretch wovens, mills often use core-spun spandex yarn, where staple fiber covers an elastic core.

Knitted fabric stretches because the loops can open, and that same freedom makes it less predictable. Loose stitch density, weak elastic recovery, unbalanced yarn twist or too much tension in finishing can make a knit grow, shrink, twist or lose its shape after washing.

We see this most often at sample approval. A buyer likes the hand of a new knit swatch, then the same fabric comes back from three home washes longer, narrower or limper than expected. For socks and close-fitting knits, a small change in width or length can spoil the fit. So we measure width and length on the first trial roll, wash it, and measure again before anyone signs off.

For a result that a buyer and a lab can repeat, wash the fabric with an agreed ISO 6330 program and measure dimensional change with ISO 5077, and note the direction of each measurement. Knits also need a check for spirality or skew, plus stretch and recovery.

Hand Feel, Breathability and Warmth

Most buyers notice hand feel first. Woven fabric feels firmer and crisper and holds a clean silhouette, which suits shirts, trousers, uniforms and outerwear. Knitted fabric feels softer and follows the body when you walk, sit or bend, so it dominates underwear, socks, base layers and loungewear.

Structure sets the starting point for hand feel. Yarn count, twist, density and finishing all change the hand, and two fabrics with the same composition can feel quite different for exactly these reasons. We always judge hand on a knitted or woven sample after finishing, never on the yarn cone alone.

Breathability depends on how open the fabric is. A loose cotton-linen weave feels cool and airy, while a dense woven shell blocks wind, even more so once it has a coating. Knits usually have more air space between the loops. That space lets air and moisture pass through, and in a thicker knit it holds still air. Thermal underwear, winter socks, sweaters and fleece-backed sweatshirts all rely on this effect. Density and yarn count shift breathability in both structures, and our article on fabric structure and performance looks at those variables one by one.

How Fabric Structure Changes Functional Yarn Results

A functional yarn shows its effect through the fabric it sits in. The structure decides how much yarn touches the skin, how moisture travels and how fast heat and sweat leave the body. As a result, the same yarn can test well in a single jersey and disappoint in a dense woven shirting.

Cooling yarn

Cooling yarns usually give a stronger cool touch in knits, because the soft loop surface makes close contact with the skin. Our 32S/1 cooling viscose/polyester yarn (60/40, ring spun) is a spring and summer sock yarn with 18G as its development reference, and we evaluate it on the knitted sock. For the first cool touch, labs measure a q-max value, though how cool a fabric feels in wear also depends on its weight and moisture handling. Cooling through sweat evaporation is a separate target with its own tests: wicking, drying rate and evaporative resistance.

Quick-dry yarn

Fiber, yarn structure, fabric density and finishing decide quick-dry performance together. For lightweight knits worn next to the skin, our 30S/1 hydrophilic polyester yarn (compact siro spun) can support faster moisture transfer and a clean fabric surface when density and finishing stay under control. To compare options, knit them in the same construction and weight. Then test moisture management with AATCC 195 and drying rate with AATCC 201 or ISO 17617, before and after washing.

Thermal yarn

Thermal yarns work with the air a knit traps. A brushed or bulky yarn in a loop structure holds still air and adds warmth without making the fabric stiff. In a tight weave, the same yarn has less room to loft.

Antibacterial yarn

Antibacterial claims need the most care. A yarn may carry an antibacterial agent, yet dyeing, finishing, washing and fabric construction can all change the result. When a buyer needs a claim on the finished product, the test belongs on the finished fabric. Use the method in the buyer’s specification, such as ISO 20743, AATCC TM100 or JIS L 1902, and state the wash history. Results from different methods do not replace one another.

Before we start a functional yarn program, we ask three questions:

1. Which fabric structure, weight and gauge will you use?
2. How many washes must the function survive?
3. Which test method and pass level will your buyer apply?

How to Tell Woven From Knitted Fabric by Hand

A quick hand check usually settles the question without a lab.

• Look at the surface. A grid, a diagonal twill line or straight yarn paths point to a woven. Small V-shaped stitches or loops point to a knit.
• Pull it gently. A knit stretches easily, especially across the width. A woven barely moves along the straight grain and gives a little on the bias.
• Check a cut edge. Woven edges fray as warp and weft yarns slip out. Single jersey curls at the edge.
• Pull a loose yarn. A weft knit often unravels row by row, while a woven releases single straight yarns.

End use gives a hint as well. Tailored jackets, shirts and trousers mostly use woven fabric, while socks, base layers, sweaters and sportswear mostly use knits. Exceptions exist, such as knitted blazers and woven running shorts.

Choosing Between Woven and Knitted Fabric

The woven vs knitted fabric decision comes down to what the product has to do. Choose woven fabric when it needs a sharp shape, wind resistance, abrasion resistance or precise tailoring. Formal shirts, suits, trousers, jackets, uniforms, workwear, bags and many home textiles fall into this group.

Choose knitted fabric when the product needs softness, stretch, body fit, warmth or all-day skin contact. T-shirts, underwear, socks, sweaters, sportswear, base layers, leggings and loungewear belong here.

Many products combine the two. An outdoor jacket might pair a woven shell for wind and abrasion with a knitted lining or base layer for comfort.

Where the real cost sits

When buyers compare quotes, the yarn price per kilo gets most of the attention. In production, the larger costs tend to come from elsewhere: yarn breaks that stop machines, shade differences between lots, a failed wash test or pilling complaints after shipment. A slightly pricier yarn that runs cleanly often costs less by the time the order ships. For that reason we follow a fixed sequence: yarn confirmation, lab dip or shade approval, machine trial, wash test, fabric measurement and then follow-up on the bulk lot.

What to include in a sample brief

A sample brief with these details helps us suggest the right yarn the first time:

• End use and target hand feel, such as crisp, soft, dry, cool or warm
• Fabric structure and machine: weaving, circular, flat, sock or warp knitting, plus the gauge
• Stretch level: none, comfort stretch or high recovery
• Tests and pass levels for dimensional change, pilling, colorfastness and any functional claim
• Documents your buyer requires, such as OEKO-TEX STANDARD 100 or GRS paperwork
• Bulk needs: shade lots, count tolerance, delivery schedule and repeat orders

If you are still weighing woven vs knitted fabric for a new sock, underwear, knitwear or sportswear program, send us these details and we will suggest yarns to trial on your machines.

Four Mix-Ups We Hear From Buyers

Thickness says little about structure

A heavy sweatshirt fabric is a knit. Chiffon and voile are thin wovens. You need to look at the structure itself.

Knits cover far more than sweaters

T-shirts, socks, underwear, polo shirts, leggings and most base layers are knits too.

Wovens can breathe very well

A loose cotton-linen weave breathes freely, while a dense knit can feel warm or even stuffy. The openness of the fabric matters more than its structure type.

Wovens pill too

Knits often show pilling sooner because their surface moves and rubs more, but wovens pill as well. Fiber type, yarn hairiness, twist, fabric density and abrasion decide how much. Ask for a pilling grade by ISO 12945-2 (Martindale) on the finished fabric instead of relying on a yarn name.

FAQ: Woven vs Knitted Fabric

What is the main difference between woven and knitted fabric?

Woven fabric interlaces two sets of yarn, warp and weft, at right angles on a loom. Knitted fabric forms yarn into interlocking loops on a knitting machine. The loops let knits stretch and recover, while the fixed crossings give wovens more stability and a crisper hand.

Is jersey woven or knitted?

Jersey is a knitted fabric. Single jersey is the basic weft-knit structure behind most T-shirts. It shows smooth V-shaped stitches on the face and small loops on the back, and its cut edges curl.

Is denim woven or knitted?

Denim is a woven fabric, usually a warp-faced cotton twill with an indigo-dyed warp and an undyed weft. Knit denim also exists. It is a knitted fabric dyed or printed to look like denim, and it stretches more than the woven original.

Which stability checks differ between knitted and woven fabric samples?

For knitted samples, check dimensional change, spirality or skew, stretch and recovery, and bursting strength (ISO 13938). For woven samples, check dimensional change, tensile strength (ISO 13934), tear strength (ISO 13937) and seam slippage (ISO 13936). Both fabric types need pilling and colorfastness checks.

Is knitted fabric more comfortable than woven fabric?

For skin-contact products, usually yes. Knits stretch with the body and feel softer, so they suit socks, underwear and base layers. Comfort still depends on fiber, yarn count, stitch density and finishing. In hot weather, a light woven in a breathable fiber can feel better than a dense synthetic knit.

Why does knitted fabric shrink or grow after washing?

Water, heat and tumbling let the loops relax and shift. Yarn twist, stitch density, elastic recovery and the tension the fabric saw during finishing decide how far the size moves. Measure washed samples in both length and width before you approve bulk production.

Can one yarn work in both woven and knitted fabric?

Yes, as long as its strength, twist and finish suit both machines. Weaving calls for a strong, even yarn that survives loom tension, while knitting calls for a soft, low-hairiness yarn that runs smoothly through the needles. Functional effects can change between the two structures, so test the final fabric as well as the yarn.