thrift.fit measurement guide

Measure once.
Compare everything.

Measure garments the same way every time so thrift.fit can compare secondhand listings against the clothes that already fit you.

Before you startJump to sections
6 garment families29 measurementsMeasured flat and relaxed
Plate — Shirt anatomyFlat & relaxed
shoulderseam to seamchestpit to pitsleeveshoulder to cufflengthcollar to hem
§ — Preface

Use one setup, then repeat it.

Same tape, same surface, same rules. Consistency is the whole reason two garments can be compared at all.

Tools

  • Flexible tailor tape
  • Flat table or clean floor
  • Reference garment that fits
  • Notes app or thrift.fit reference editor

Rules

  1. 1. Measure flat, relaxed fabric.
  2. 2. Keep flat width and circumference clearly labeled.
  3. 3. Compare like garment types against each other.

Read this first. Every number below is an example, not a recommendation. The bands describe one build; a broader or slimmer body lands outside them. thrift.fit compares listings against the garment you measured, so your reference garment sets your numbers.

§ I — Wovens, overshirts, polos

Shirts

Shirts are easiest to compare when the garment is buttoned, flattened, and measured from stable seam points.

Plate I
shoulderseam to seamchestpit to pitsleeveshoulder to cufflengthcollar to hem

Chest

#shirt-chest

Pit-to-pit width across the front of a buttoned shirt.

How to measure

  1. 1. Button the shirt and smooth the front without stretching.
  2. 2. Measure straight from armpit seam to armpit seam.
  3. 3. Record the number shown on the tape without converting it.

Common mistakes

  • xLetting the tape arc upward
  • xMeasuring below the pit seam
  • xEntering a tagged chest size instead of the tape reading

Why it matters: Chest is the fastest signal for whether the shirt will close and drape cleanly.

Example only Flat width in inches

Example values — a broader or slimmer build will land elsewhere. Your reference garment sets your numbers, not this table.

Trim

e.g. 18-19

Close

e.g. 19-20

Regular

e.g. 20-22

Relaxed

e.g. 22-23

Oversized

e.g. 23+

Shoulder

#shirt-shoulder

Straight distance between the outer shoulder seam points across the back yoke.

How to measure

  1. 1. Flip the shirt face down.
  2. 2. Find where each sleeve joins the shoulder seam.
  3. 3. Measure straight seam point to seam point across the back.

Common mistakes

  • xFollowing the curve of the yoke
  • xStarting at the sleeve edge instead of the seam point
  • xMeasuring across wrinkles

Why it matters: Shoulder width controls sleeve pitch and how structured the shirt feels.

Example only Across back in inches

Trim

e.g. 16-17

Close

e.g. 17-18

Regular

e.g. 18-19

Relaxed

e.g. 19-20

Oversized

e.g. 20+

Neck

#shirt-neck

Straight width across the inside of the collar opening while the shirt lies flat.

How to measure

  1. 1. Button the collar and lay the shirt flat without stretching it.
  2. 2. Let the collar opening keep its natural shape.
  3. 3. Measure straight across the inside opening from side to side.

Common mistakes

  • xMeasuring button to buttonhole around the collar
  • xFollowing the collar curve
  • xEntering the tagged neck size instead of the flat tape reading

Why it matters: Neck width shows whether a buttoned collar will close comfortably.

Example only Flat collar tape reading in inches

Trim

e.g. 6-7

Close

e.g. 7-7.5

Regular

e.g. 7.5-8

Relaxed

e.g. 8-8.5

Oversized

e.g. 8.5+

Sleeve

#shirt-sleeve

Sleeve length from shoulder seam to cuff edge.

How to measure

  1. 1. Lay the sleeve flat with the cuff closed.
  2. 2. Start at the shoulder seam.
  3. 3. Measure along the outside edge to the cuff.

Common mistakes

  • xMeasuring from the collar
  • xStopping at the cuff seam
  • xLetting the sleeve bend under the tape

Why it matters: Sleeve length is a hard comfort check for cuffs, watches, and layering.

Example only Sleeve length in inches

Trim

e.g. 23-24

Close

e.g. 24-25

Regular

e.g. 25-26

Relaxed

e.g. 26-27

Oversized

e.g. 27+

Cuff

#shirt-cuff

The tape reading straight across one closed, laid-flat cuff.

How to measure

  1. 1. Fasten the cuff at the usual button.
  2. 2. Lay it flat without stretching or folding it.
  3. 3. Measure edge to edge and record the number on the tape.

Common mistakes

  • xMeasuring around the cuff
  • xIncluding both cuff layers twice
  • xUsing a different button position

Why it matters: Cuff width determines wrist and watch clearance.

Example only Flat cuff tape reading in inches

Trim

e.g. 3-3.5

Close

e.g. 3.5-4

Regular

e.g. 4-4.5

Relaxed

e.g. 4.5-5

Oversized

e.g. 5+

Length

#shirt-length

Back length from the top of the back collar to the bottom hem.

How to measure

  1. 1. Keep the shirt face down.
  2. 2. Start at the top edge of the back collar at center back.
  3. 3. Measure straight down to the longest point of the hem.

Common mistakes

  • xStarting at the front collar
  • xMeasuring the front instead of the back
  • xIgnoring a curved tail

Why it matters: Length decides whether the shirt works tucked, untucked, or layered.

Example only Back length in inches

Trim

e.g. 27-28

Close

e.g. 28-29

Regular

e.g. 29-31

Relaxed

e.g. 31-32

Oversized

e.g. 32+

§ II — Blazers, coats, truckers

Jackets

Jackets need relaxed fabric and careful seam selection because padding, lining, and lapels can distort the tape.

Plate II
shoulderseam to seamchestpit to pitsleeveshoulder to cufflengthcollar to hem

Chest

#jacket-chest

Flat width from armpit to armpit with the jacket closed.

How to measure

  1. 1. Button or zip the jacket as it would be worn.
  2. 2. Smooth the body without pulling the lining tight.
  3. 3. Measure straight across at the pit seam.

Common mistakes

  • xMeasuring with the jacket open
  • xIncluding sleeve fabric
  • xPulling padded fronts taut

Why it matters: Chest determines whether the jacket closes and whether the front hangs cleanly.

Example only Flat width in inches

Example values — a broader or slimmer build will land elsewhere. Your reference garment sets your numbers, not this table.

Trim

e.g. 19-20

Close

e.g. 20-21

Regular

e.g. 21-22.5

Relaxed

e.g. 22.5-24

Oversized

e.g. 24+

Shoulder

#jacket-shoulder

Back shoulder width between the outer sleeve head seam points.

How to measure

  1. 1. Turn the jacket face down.
  2. 2. Identify where each sleeve head seam meets the shoulder.
  3. 3. Measure straight seam point to seam point across the upper back.

Common mistakes

  • xIncluding shoulder padding overhang
  • xFollowing a curved seam
  • xMeasuring across the front lapels

Why it matters: Shoulder width is difficult to alter and drives the whole silhouette.

Example only Across back in inches

Trim

e.g. 16.5-17.5

Close

e.g. 17.5-18.5

Regular

e.g. 18.5-19.5

Relaxed

e.g. 19.5-20.5

Oversized

e.g. 20.5+

Neck

#jacket-neck

The tape reading straight across the laid-flat back collar opening.

How to measure

  1. 1. Lay the jacket face down with the collar relaxed.
  2. 2. Find the two points where the collar meets the body.
  3. 3. Measure straight between them and record the tape reading.

Common mistakes

  • xFollowing the collar curve
  • xMeasuring across the lapels
  • xStretching a ribbed collar

Why it matters: Neck width helps explain collar balance and upper-back room.

Example only Flat collar tape reading in inches

Trim

e.g. 6-7

Close

e.g. 7-8

Regular

e.g. 8-9

Relaxed

e.g. 9-10

Oversized

e.g. 10+

Sleeve

#jacket-sleeve

Outside sleeve length from shoulder seam to cuff.

How to measure

  1. 1. Flatten the sleeve without forcing the elbow shape.
  2. 2. Start at the shoulder seam.
  3. 3. Measure to the cuff edge.

Common mistakes

  • xStarting at the collar
  • xMeasuring the inner sleeve
  • xIgnoring working button cuffs

Why it matters: Sleeves are alterable only within limits, especially on finished cuffs.

Example only Sleeve length in inches

Trim

e.g. 23-24

Close

e.g. 24-25

Regular

e.g. 25-26

Relaxed

e.g. 26-27

Oversized

e.g. 27+

Length

#jacket-length

Back length from the top of the back collar to the bottom hem.

How to measure

  1. 1. Lay the jacket face down.
  2. 2. Start at the top edge of the back collar at center back.
  3. 3. Measure straight down to the bottom hem.

Common mistakes

  • xStarting on the front collar
  • xUsing front length on a cutaway jacket
  • xMeasuring over folded vents

Why it matters: Length separates cropped casual jackets from classic tailoring proportions.

Example only Back length in inches

Trim

e.g. 24-26

Close

e.g. 26-28

Regular

e.g. 28-30

Relaxed

e.g. 30-32

Oversized

e.g. 32+

§ III — Trousers, denim, fatigues

Pants & Jeans

Bottoms compare best when the waistband, rise, and inseam are measured separately instead of trusting tagged waist size.

Plate III
waistflat, doubledrisecrotch to waistthighbelow the crotchinseamcrotch to hem

Waist

#pants-waist

The tape reading straight across the laid-flat waistband.

How to measure

  1. 1. Fasten the waist closure.
  2. 2. Align front and back waistband edges naturally.
  3. 3. Measure straight across from edge to edge and record that number.

Common mistakes

  • xStretching elastic or denim
  • xMeasuring a dipped waistband unevenly
  • xEntering the tagged waist size instead of the tape reading

Why it matters: Waist decides whether the garment can be worn without tailoring or belt compensation.

Example only Flat waistband tape reading in inches

Example values — a broader or slimmer build will land elsewhere. Your reference garment sets your numbers, not this table.

Trim

e.g. 14-15

Close

e.g. 15-16

Regular

e.g. 16-17

Relaxed

e.g. 17-18

Oversized

e.g. 18+

Hip

#pants-hip

The tape reading across the widest part of the laid-flat seat.

How to measure

  1. 1. Smooth the pants without stretching them.
  2. 2. Find the widest point below the waistband.
  3. 3. Measure straight across and record the number on the tape.

Common mistakes

  • xMeasuring at the waistband
  • xPulling the fabric taut
  • xFollowing the curve of the seat

Why it matters: Hip width shows whether the top block has enough room to sit cleanly.

Example only Flat hip tape reading in inches

Trim

e.g. 17-18

Close

e.g. 18-19

Regular

e.g. 19-20

Relaxed

e.g. 20-22

Oversized

e.g. 22+

Inseam

#pants-inseam

Inside leg length from crotch seam to hem.

How to measure

  1. 1. Fold one leg so the inseam is visible.
  2. 2. Start at the crotch seam intersection.
  3. 3. Follow the inner seam to the hem edge.

Common mistakes

  • xMeasuring outseam instead
  • xStarting below the crotch seam
  • xIgnoring cuff allowance

Why it matters: Inseam determines break, crop, and whether hemming is enough to rescue the fit.

Example only Inseam in inches

Trim

e.g. 26-28

Close

e.g. 28-30

Regular

e.g. 30-32

Relaxed

e.g. 32-34

Oversized

e.g. 34+

Rise

#pants-rise

Distance from crotch seam intersection to top of waistband.

How to measure

  1. 1. Lay the front rise flat.
  2. 2. Start at the crotch seam intersection.
  3. 3. Measure to the top front waistband edge.

Common mistakes

  • xUsing back rise without labeling it
  • xStarting below the seam intersection
  • xPulling the fly into a curve

Why it matters: Rise changes where pants sit and how much room exists through the top block.

Example only Front rise in inches

Trim

e.g. 9-10

Close

e.g. 10-11

Regular

e.g. 11-12

Relaxed

e.g. 12-13

Oversized

e.g. 13+

Thigh

#pants-thigh

Flat thigh width measured just below the crotch seam.

How to measure

  1. 1. Lay the leg flat with the inseam visible.
  2. 2. Start about one inch below the crotch seam.
  3. 3. Measure straight across to the outside leg edge.

Common mistakes

  • xMeasuring too far down the leg
  • xPulling pleats open
  • xComparing thigh width to circumference

Why it matters: Thigh room is the main comfort check for denim, fatigues, and tailored trousers.

Example only Flat thigh in inches

Trim

e.g. 10-11

Close

e.g. 11-12

Regular

e.g. 12-13

Relaxed

e.g. 13-14

Oversized

e.g. 14+

Outseam

#pants-outseam

The tape reading from the top of the waistband to the hem along the outside leg.

How to measure

  1. 1. Lay the outside leg seam flat.
  2. 2. Start at the top edge of the waistband.
  3. 3. Follow the outside leg to the hem and record the tape reading.

Common mistakes

  • xStarting below the waistband
  • xMeasuring the inseam instead
  • xStopping above a cuffed hem

Why it matters: Outseam captures the full trouser length, including the rise.

Example only Outseam tape reading in inches

Trim

e.g. 36-38

Close

e.g. 38-40

Regular

e.g. 40-42

Relaxed

e.g. 42-44

Oversized

e.g. 44+

Leg opening

#pants-leg-opening

The tape reading straight across one laid-flat hem opening.

How to measure

  1. 1. Align the front and back edges of one hem.
  2. 2. Let the fabric lie naturally without stretching.
  3. 3. Measure edge to edge and record the number on the tape.

Common mistakes

  • xMeasuring around the opening
  • xIncluding both pant legs
  • xStretching elastic cuffs

Why it matters: Leg opening distinguishes tapered, straight, and wide silhouettes.

Example only Flat hem tape reading in inches

Trim

e.g. 5-6

Close

e.g. 6-7

Regular

e.g. 7-8

Relaxed

e.g. 8-9

Oversized

e.g. 9+

§ IV — Knits, cardigans, sweatshirts

Sweaters

Knitwear moves under tension, so measure relaxed and note whether the fabric has stretch, ribbing, or drop shoulders.

Plate IV
shoulderseam to seamchestrelaxed pit to pitsleeveshoulder to cufflengthcollar to hem

Chest

#sweater-chest

Relaxed pit-to-pit width across the front of the knit.

How to measure

  1. 1. Lay the sweater flat and let ribbing relax.
  2. 2. Measure from pit to pit without stretching.
  3. 3. Record whether the knit is heavy, ribbed, or elastic.

Common mistakes

  • xStretching the knit while measuring
  • xIgnoring drop shoulders
  • xComparing shrunk wool to tagged size

Why it matters: Sweater chest controls drape and layering room more than the letter size does.

Example only Flat width in inches

Example values — a broader or slimmer build will land elsewhere. Your reference garment sets your numbers, not this table.

Trim

e.g. 18-19

Close

e.g. 19-21

Regular

e.g. 21-23

Relaxed

e.g. 23-25

Oversized

e.g. 25+

Sleeve

#sweater-sleeve

Sleeve length from shoulder seam, or from collar on raglan and drop-shoulder knits.

How to measure

  1. 1. Identify whether the sweater has set-in, raglan, or drop shoulders.
  2. 2. Measure from the clearest sleeve start point.
  3. 3. Note the start point in the measurement label.

Common mistakes

  • xTreating drop shoulders like set-in sleeves
  • xStretching ribbed cuffs
  • xHiding the measurement start point

Why it matters: Knit sleeve measurements need context because shoulder construction changes the number.

Example only Sleeve length in inches

Trim

e.g. 22-23

Close

e.g. 23-24

Regular

e.g. 24-25

Relaxed

e.g. 25-26

Oversized

e.g. 26+

Shoulder

#sweater-shoulder

Straight relaxed distance between the outer shoulder seam points across the back.

How to measure

  1. 1. Lay the sweater face down without stretching the knit.
  2. 2. Find where each sleeve joins the shoulder seam.
  3. 3. Measure straight seam point to seam point across the back.

Common mistakes

  • xStretching the shoulder line
  • xFollowing a curved yoke or raglan seam
  • xLeaving drop-shoulder construction unlabeled

Why it matters: Sweater shoulder width explains where the sleeve starts, especially on boxy or drop-shoulder knits.

Example only Across back in inches

Trim

e.g. 16-17.5

Close

e.g. 17.5-19

Regular

e.g. 19-20.5

Relaxed

e.g. 20.5-22

Oversized

e.g. 22+

Neck

#sweater-neck

The tape reading straight across the relaxed neck opening.

How to measure

  1. 1. Lay the sweater flat and let the neckline relax.
  2. 2. Measure straight across the opening at its widest stable points.
  3. 3. Record the tape reading without stretching the knit.

Common mistakes

  • xStretching ribbing
  • xMeasuring around the opening
  • xIncluding a folded turtleneck height

Why it matters: Neck opening width distinguishes close crewnecks from wider collars.

Example only Flat neck-opening tape reading in inches

Trim

e.g. 5-6

Close

e.g. 6-7

Regular

e.g. 7-8

Relaxed

e.g. 8-9

Oversized

e.g. 9+

Length

#sweater-length

Back length from the top of the back collar to the relaxed bottom hem.

How to measure

  1. 1. Let the hem ribbing relax.
  2. 2. Start at the top edge of the back collar at center back.
  3. 3. Measure straight down without stretching the body.

Common mistakes

  • xPulling ribbing to gain length
  • xStarting on the front collar
  • xIgnoring cropped hems

Why it matters: Sweater length controls layering and whether ribbing lands at the waist or hip.

Example only Back length in inches

Trim

e.g. 23-24

Close

e.g. 24-25

Regular

e.g. 25-27

Relaxed

e.g. 27-29

Oversized

e.g. 29+

§ V — Sneakers, boots, loafers

Shoes

Shoes need both marked size and actual length context because brand lasts and international conversions vary.

Plate V
shoe widthwidest pointmarked sizeread the stampshoe lengthheel to toe

US Size

#shoe-size

The US size printed or stamped on this exact pair.

How to measure

  1. 1. Find the size marking on the tongue, lining, or sole.
  2. 2. Record the US size exactly as shown, including half sizes.
  3. 3. Do not convert from another size system.

Common mistakes

  • xGuessing a US conversion
  • xUsing the box when it differs from the shoe
  • xDropping a half size

Why it matters: The marked size is useful identity evidence, while tape measurements reveal last differences.

Example only Marked US size

Example values — a broader or slimmer build will land elsewhere. Your reference garment sets your numbers, not this table.

Trim

e.g. 7-8

Close

e.g. 8-9

Regular

e.g. 9-10

Relaxed

e.g. 10-11

Oversized

e.g. 11+

Shoe Length

#shoe-length

The heel-to-toe tape reading along the bottom of the outsole.

How to measure

  1. 1. Place the shoe sole-down beside a straight tape.
  2. 2. Measure from the rearmost heel point to the longest toe point.
  3. 3. Record the tape reading without converting it.

Common mistakes

  • xMeasuring a removable insole instead
  • xFollowing the curve of the upper
  • xStopping before a projecting toe or heel

Why it matters: Length evidence makes tagged shoe sizes easier to compare across brands and lasts.

Example only Outsole tape reading in inches

Trim

e.g. 10-10.5

Close

e.g. 10.5-11

Regular

e.g. 11-11.5

Relaxed

e.g. 11.5-12

Oversized

e.g. 12+

Shoe Width

#shoe-width

The tape reading straight across the outsole at its widest forefoot point.

How to measure

  1. 1. Find the widest part of the shoe near the ball of the foot.
  2. 2. Measure straight across the bottom of the outsole.
  3. 3. Record the number shown on the tape.

Common mistakes

  • xMeasuring the toe cap
  • xWrapping the tape around the upper
  • xUsing a width letter as a tape measurement

Why it matters: Width often explains why the right length still feels wrong.

Note. Width is taken at the widest point — across the ball of the foot — not the toe cap or the heel.

Example only Outsole width tape reading in inches

Trim

e.g. 3.5-3.75

Close

e.g. 3.75-4

Regular

e.g. 4-4.25

Relaxed

e.g. 4.25-4.5

Oversized

e.g. 4.5+

§ VI — Belts, hats, bags

Accessories

Accessories usually need one decisive usable dimension rather than a full garment profile.

Plate VI
start herethe buckle prongusable rangetightest to loosestbelt lengthprong to hole

Belt Length

#belt-length

Usable belt range from buckle prong to the adjustment holes.

How to measure

  1. 1. Start at the buckle prong, not the buckle end.
  2. 2. Measure to the tightest and loosest usable holes.
  3. 3. Record the range rather than total leather length.

Common mistakes

  • xMeasuring total belt length only
  • xIgnoring buckle allowance
  • xRecording only one hole

Why it matters: Accessory sizing fails when decorative length is confused with usable fit range.

Example only Waist range in inches

Example values — a broader or slimmer build will land elsewhere. Your reference garment sets your numbers, not this table.

Trim

e.g. 28-30

Close

e.g. 30-32

Regular

e.g. 32-34

Relaxed

e.g. 34-36

Oversized

e.g. 36+

Hat Circumference

#hat-circumference

Inside band circumference where the hat sits on the head.

How to measure

  1. 1. Measure around the inside sweatband.
  2. 2. Keep the tape level and relaxed.
  3. 3. Record inches or centimeters with the tagged size.

Common mistakes

  • xMeasuring outer brim width
  • xMixing diameter and circumference
  • xIgnoring adjustable closures

Why it matters: Hat fit depends on circumference, not brim or crown dimensions.

Example only Hat circumference

Trim

e.g. 21.5

Close

e.g. 22

Regular

e.g. 22.5

Relaxed

e.g. 23

Oversized

e.g. 23.5+

Bag Dimensions

#bag-dimensions

Exterior width, height, and depth plus strap drop when relevant.

How to measure

  1. 1. Measure width across the widest structured point.
  2. 2. Measure height and depth separately.
  3. 3. Add strap drop for shoulder and crossbody bags.

Common mistakes

  • xCombining depth with width
  • xIgnoring strap drop
  • xMeasuring collapsed soft bags inconsistently

Why it matters: Bag dimensions decide what actually fits inside and how the bag carries.

Note. All three dimensions are measured at the bag body — never the handles, straps, or opening flare.

Example only Common capacity

Trim

e.g. pouch

Close

e.g. small

Regular

e.g. daily

Relaxed

e.g. travel

Oversized

e.g. oversize