Children are sized by height far more reliably than by age, and every trouser style needs its own amount of ease: the room between body and cloth. This lesson gives a typical children’s chart from toddler to teen, and an ease table for every main trouser style, so that the blocks and silhouettes later in the module have numbers to work from.

Seven child outlines of increasing height, 92, 104, 116, 128, 140, 152 and 164 cm, standing on a baseline in front of a height scale, each labelled with its age band from the chart and its waist and hip in inches and cm
Children sized by height: seven outlines on one height scale, with the chart’s waist and hip.
Ease ladder: eight front-view trouser outlines from leggings to palazzo, each drawn over the same faint body outline so the gap at hip, thigh, knee and hem shows, with the total hip ease from the lesson’s table under each: leggings minus 10 to 15 percent, skinny 0 to 1 inch, cigarette 1 1/2 to 2 inches, block 2 inches, tailored 3 to 4 inches plus pleats, jogger 3 to 4 inches, wide leg 3 to 4 inches, palazzo 6 inches or more
Illustration: the ease ladder. The same body, eight trousers, from negative ease to a full palazzo.

What you’ll learn

  • A typical children’s trouser chart by height and age band.
  • How children’s proportions change, and what that means for the block.
  • How much ease each trouser style needs at waist, hip, thigh, knee and hem.
  • Wearing ease and design ease, and negative ease for stretch.

Children: a typical chart

Age band Height Waist Hip
2–3 years 92–98 cm (36–38 1/2 in) 19 1/2 in (49.5 cm) 21 in (53.5 cm)
3–4 years 98–104 cm 20 in (51 cm) 22 in (56 cm)
4–5 years 104–110 cm 20 1/2 in (52 cm) 23 in (58.5 cm)
5–6 years 110–116 cm 21 in (53.5 cm) 24 in (61 cm)
6–7 years 116–122 cm 21 1/2 in (54.5 cm) 25 in (63.5 cm)
7–8 years 122–128 cm (48–50 1/2 in) 22 in (56 cm) 26 in (66 cm)
8–9 years 128–134 cm 22 1/2 in (57 cm) 27 in (68.5 cm)
9–10 years 134–140 cm 23 in (58.5 cm) 28 in (71 cm)
11–12 years 146–152 cm 24 1/2 in (62 cm) 30 1/2 in (77.5 cm)
13–14 years 158–164 cm 26 in (66 cm) 33 1/2 in (85 cm)

Each 6 cm (about 2 1/2 in) step in height adds, typically, about 1/2 in (1.3 cm) to the waist, 1 in (2.5 cm) to the hip, 1/4 in (6 mm) to the seated rise and 1 1/2 in (3.8 cm) to the trouser length. From about 11 years, girls’ and boys’ hips and waists start to differ, so teen charts split. Our worked-example child (127 cm, waist 22, hip 26) sits in the 7–8 years band. For babies (under 2) use height and weight, and measure over the nappy.

Ease: the two kinds

  • Wearing ease lets the body sit, bend, walk and breathe. A woven trouser block has about 1 in (2.5 cm) at the waist and 2 in (5 cm) at the hip.
  • Design ease creates the style: the volume of a palazzo, the pleats of a trouser, the drop of a harem.
  • Negative ease is a pattern smaller than the body, for stretch fabrics (leggings, jeggings). See Troubleshooting a first draft: toiles, stretch and asymmetry.
Ease for every style: the full table
Style Hip ease (total) Knee and hem Waist
Leggings (4-way stretch) –10 to –15% of hip Negative, to ankle Elastic
Skinny or jeggings (stretch woven) 0 to 1 in (0–2.5 cm) Close; hem 11–12 in (28–30.5 cm) 1/2 in (1.3 cm)
Cigarette or slim 1 1/2–2 in (4–5 cm) Knee +3 in; hem 13–14 in (33–35.5 cm) 1 in (2.5 cm)
Block / straight 2 in (5 cm) Knee +4 in; hem 17–18 in (43–46 cm) 1 in (2.5 cm)
Tailored, pleated 3–4 in (7.5–10 cm) plus pleats Knee 20–21 in; hem 18–19 in 1 in (2.5 cm)
Wide leg 3–4 in (7.5–10 cm) Hem 24–30 in (61–76 cm) 1 in or elastic
Palazzo 6 in (15 cm) or more Hem 30–40 in (76–101.5 cm) Elastic or faced
Jogger 3–4 in (7.5–10 cm) Rib cuff = ankle + 1 in Elastic and cord
Harem / drop-crotch 8 in (20 cm) or more Gathered to a cuff Elastic
Salwar, Patiala 20 in (50 cm) or much more Mohri 13–16 in (33–40.5 cm) Nada, gathered
Churidar (bias) 2–3 in (5–7.5 cm) Calf +1 1/2 in; ankle +1 in Nada
Children’s play 3–4 in (7.5–10 cm) Knee +3 1/2 in; easy hem Elastic, adjustable

All figures are typical, not a standard; they change with fabric, body and taste. A standard method: a D&D teacher checks the figures before you rely on them.

In more depth: how children’s proportions change
  • Toddlers: round tummy, little or no waist, short legs, deep back curve. Patterns need more front rise over the tummy, more back rise, and room for a nappy until about 3.
  • Children (3–8): legs grow faster than the body. The tummy flattens slowly; the waist and hip stay close (about 4 in, 10 cm, apart at 7–8 years in our example).
  • Pre-teens (9–12): long and narrow, with the hip starting to pull away from the waist, earlier in many girls.
  • Teens: adult proportions arrive at different ages; use the women’s or men’s block with teen measurements.

See Module 3, Babies and toddlers and Children, pre-teens and teens, for fit and growth room.

In more depth: where to put the ease

Total ease is only half the story; where it sits matters as much.

  • Back more than front. The block gives the back 1 in (2.5 cm) more width than the front at the hip, because the seat needs room to sit.
  • Crotch before side seam. A trouser that restricts the stride needs room at the crotch curve and inner thigh, not at the side seam.
  • Thigh separately. Check thigh ease (at least 2–3 in, 5–7.5 cm, in a woven trouser) on the pattern at the crotch line; it is often where a slim draft fails.
  • Children’s ease goes to the seat and knees, where they crawl, squat and climb.
Tips, tricks and hacks
  1. Size children by height, then check waist and hip.
  2. Measure a favourite trouser to find the ease a person likes; it beats any table.
  3. Use a hip-to-hem “ease check”: lay the pattern pieces together and measure front plus back at hip, thigh, knee and hem.
  4. Thin, soft cloth needs less ease than stiff cloth for the same comfort.
  5. Linings take up ease; add 1/4–1/2 in (6–13 mm) at the hip for a lined trouser.
  6. Heel-to-instep sets the narrowest hem without an opening; record it.
  7. Professionals write the ease on the pattern beside each line, so the next person knows what was intended.
  8. Elastic waists need the pattern waist to pass over the hip: top of the trouser at least hip plus 2 in (5 cm).
  9. For growing children, add ease at the hip and rise rather than buying two sizes up.
  10. Teens often like trends (wide or baggy) that need more design ease than you would choose; ask first.
Problems and how to fix them

Child’s trousers fit around but are too short

Cause: sized by age; a tall child for their age.

  1. Use the height band, then check the waist.
  2. Lengthen the leg pattern at the knee.
  3. Prevention: measure height every time.

Fitted at the hip but too tight to sit

Cause: too little hip or crotch ease for a woven fabric.

  1. Let out the back crotch and centre back.
  2. Use a fabric with a little stretch.
  3. Prevention: keep at least 2 in (5 cm) hip ease in wovens.

Palazzo looks like a straight trouser

Cause: not enough design ease at the hem, or a stiff fabric.

  1. Slash and spread the leg for more hem width (see From the block: palazzo, harem, culotte and jogger).
  2. Choose a softer, drapier fabric.
  3. Prevention: check hem width against the ease table.

Foot will not go through the hem

Cause: hem narrower than the heel-to-instep loop.

  1. Add a side-hem slit or a zip.
  2. Widen the hem to the heel-to-instep plus 1/2 in (1.3 cm).
  3. Prevention: record heel-to-instep for every tapered style.

Leggings go see-through at the seat

Cause: too much negative ease for the fabric.

  1. Reduce negative ease.
  2. Choose a heavier, better-recovering knit.
  3. Prevention: test the fabric’s stretch before drafting.

Pleated trouser pleats gape open

Cause: not enough hip ease behind the pleats.

  1. Let out the side seams at the hip.
  2. Reduce pleat depth.
  3. Prevention: 3–4 in (7.5–10 cm) hip ease plus the pleats.

Teen girl between children’s and women’s charts

Cause: adult proportions arriving.

  1. Draft from her own measurements with the women’s block.
  2. Use the children’s length with women’s hip.
  3. Prevention: from about 11, always measure, never chart.
Beginner mistakes and myths
  • Adding ease twice: once to the measurement and again to the pattern.
  • Same ease for every fabric. Stiff denim and soft rayon need different amounts.
  • Myth: “More ease is always more comfortable.” Too much at the crotch drags and bags.
  • Myth: “Children’s sizes are standard.” They are as varied as adult sizes.
Practice drills
  1. Easy: place three children you know on the chart by height; check their waist against it.
  2. Medium: measure four trousers of different styles and find their hip and hem ease on a body you know.
  3. Medium: fill an ease table for your own favourite trousers.
  4. Hard: choose a style and fabric and write the full ease plan (waist, hip, thigh, knee, hem) before drafting.
For hobby, earning and teaching

As a hobby: an ease table for your own body is the most useful page in your sewing notebook.

For earning: school-uniform and festive children’s wear come in waves. A clear height chart for your studio speeds up every order.

For teaching: the ease ladder drawing is a good first class on style: one body, eight trousers, the same numbers changing.

Sources and uncertain points
  • Children’s figures are typical working values, rounded; real charts (and Indian children) vary widely. Check against a brand or school chart where one is required.
  • Growth steps per 6 cm height band are approximations.
  • Ease figures are common teaching values for woven fabrics unless marked; schools and brands differ.
  • Negative-ease percentages for knits depend on the fabric’s stretch and recovery; test every fabric.
Check yourself
  1. Do you size children by height first?
  2. Can you explain wearing ease and design ease?
  3. Do you know the hip ease of the basic block?
  4. Can you find the minimum hem width for a tapered trouser?
  5. Would you split a teen onto the women’s or men’s block?
Key terms
  • Wearing ease: room for movement.
  • Design ease: room that creates the style.
  • Negative ease: a pattern smaller than the body, for stretch.
  • Height band: a children’s size defined by height, often 6 cm wide.
  • Mohri: the ankle opening of a salwar, churidar or pyjama.