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Lay-flat waist measurement converter

Measure pants or jeans flat across the waistband, then convert that centimetre measurement into a measured waist size in inches for resale listings.

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Quick converter

Check one waistband measurement

Measured waist 27.6 in

Nearest listing size: W28

Desk reference

Lay-flat cm to waist inches chart

Use the exact measured waist where possible. The nearest size is a search-friendly guide, not a promise of fit.

Lay-flat waistband measurement in centimetres converted to measured waist inches
Lay-flat Measured waist Nearest size Lay-flat Measured waist Nearest size
28cm 22.0in W22 42.5cm 33.5in W33
28.5cm 22.4in W22 43cm 33.9in W34
29cm 22.8in W23 43.5cm 34.3in W34
29.5cm 23.2in W23 44cm 34.6in W35
30cm 23.6in W24 44.5cm 35.0in W35
30.5cm 24.0in W24 45cm 35.4in W35
31cm 24.4in W24 45.5cm 35.8in W36
31.5cm 24.8in W25 46cm 36.2in W36
32cm 25.2in W25 46.5cm 36.6in W37
32.5cm 25.6in W26 47cm 37.0in W37
33cm 26.0in W26 47.5cm 37.4in W37
33.5cm 26.4in W26 48cm 37.8in W38
34cm 26.8in W27 48.5cm 38.2in W38
34.5cm 27.2in W27 49cm 38.6in W39
35cm 27.6in W28 49.5cm 39.0in W39
35.5cm 28.0in W28 50cm 39.4in W39
36cm 28.3in W28 50.5cm 39.8in W40
36.5cm 28.7in W29 51cm 40.2in W40
37cm 29.1in W29 51.5cm 40.6in W41
37.5cm 29.5in W30 52cm 40.9in W41
38cm 29.9in W30 52.5cm 41.3in W41
38.5cm 30.3in W30 53cm 41.7in W42
39cm 30.7in W31 53.5cm 42.1in W42
39.5cm 31.1in W31 54cm 42.5in W43
40cm 31.5in W31 54.5cm 42.9in W43
40.5cm 31.9in W32 55cm 43.3in W43
41cm 32.3in W32 55.5cm 43.7in W44
41.5cm 32.7in W33 56cm 44.1in W44
42cm 33.1in W33
Listing wording tip: If the tag size and measured waist differ, write both. Example: tagged W32, measures approx W28.
FAQ

Lay-flat measurement questions

How do I convert a lay-flat waist measurement to inches?

Measure the waistband straight across while the pants are laid flat, double that centimetre measurement, then divide by 2.54 to convert the full waist measurement to inches.

Does 35cm lay-flat equal a 32 inch waist?

No. A true 35cm lay-flat waist is about 70cm around, which is about 27.6 inches. That usually rounds to W28. A measured 32 inch waist is about 40.5cm lay-flat.

Should I list the tag size or the measured waist?

Use both where possible. If the tag says W32 but the waistband measures 35cm lay-flat, write something like tagged W32, measures approx W28, so buyers understand the real fit.