MeasureMint

28 mm in inches

  • Ingredient weights: King Arthur Baking chart
  • Updated Oct 23, 2026
  • Runs in your browser
  • Methodology
  • Instant answers. Results update as you type, with a visual breakdown.
  • Share or print. Copy a link with your numbers, or print a clean summary.
  • Sourced and private. Ingredient weights: King Arthur Baking chart. Nothing you enter leaves your device.

28 mm = 1.1024 in

Worked example

28 ÷ 25.4 = 1.1024 inches. On a ruler marked in sixteenths, that is about 1 1/8″; in thirty-seconds, 1 3/32″; in sixty-fourths, 1 7/64″. The nearest 1/16 mark (1 1/8″ = 28.57 mm) is off by 0.57 mm.

28 mm is also 2.8 cm.

MillimetersInchesNearest 1/16
23 mm0.90557/8″
24 mm0.944915/16″
25 mm0.98431″
26 mm1.02361″
27 mm1.0631 1/16″
28 mm1.10241 1/8″
29 mm1.14171 1/8″
30 mm1.18111 3/16″
31 mm1.22051 1/4″
32 mm1.25981 1/4″
33 mm1.29921 5/16″

Frequently asked questions

How many inches is 28 mm?

1.1024 inches, about 1 1/8″.

What fraction of an inch is 28 mm?

About 1 3/32″ to the nearest 1/32.