EmbTools Reference

Millimeter ↔ Inch Converter

Quick reference chart and interactive calculator for common embroidery and fabrication conversions.

Conversion Calculator

Millimeters (mm)

Inches (in)

Tip: type either value and the other updates instantly. Precision is rounded to practical decimals for each unit.

0–100 mm Reference Chart

Values are precise (4 decimal places) to help when planning embroidery hoops, hoop depth, or materials.

mm (1–50)inchesCommon item (approx)

10.0394≈ U.S. dime thickness (1.35 mm)

20.0787≈ U.S. penny thickness (1.52 mm)

30.1181≈ U.S. nickel/quarter thickness (~1.9 mm)

40.1575—

50.1969≈ Two business cards stacked

60.2362—

70.2756—

80.3150—

90.3543—

100.3937≈ Standard pencil diameter

110.4331—

120.4724≈ 1/2" plywood face (12.7 mm)

130.5118—

140.5512—

150.5906≈ 5/8" plywood (15.9 mm)

160.6299—

170.6693—

180.7087≈ U.S. dime diameter (17.9 mm)

190.7480≈ U.S. penny diameter (19.1 mm)

200.7874—

210.8268≈ U.S. nickel diameter (21.2 mm)

220.8661—

230.9055—

240.9449≈ U.S. quarter diameter (24.3 mm)

250.9843≈ 1 inch belt width

261.0236—

271.0630—

281.1024—

291.1417—

301.1811≈ LEGO brick width (31.8 mm)

311.2205—

321.2598—

331.2992—

341.3386—

351.3780≈ Two stacked LEGO bricks

361.4173—

371.4567—

381.4961—

391.5354—

401.5748≈ 4 cm embroidery satin stitch

411.6142—

421.6535—

431.6929—

441.7323—

451.7717—

461.8110—

471.8504—

481.8898—

491.9291—

501.9685≈ Credit card width (54 mm)

mm (51–100)inchesCommon item (approx)

512.0079—

522.0472—

532.0866—

542.1260—

552.1654—

562.2047—

572.2441—

582.2835—

592.3228—

602.3622≈ Business card width (63 mm)

612.4016—

622.4409—

632.4803—

642.5197—

652.5591—

662.5984—

672.6378—

682.6772—

692.7165—

702.7559—

712.7953—

722.8346—

732.8740—

742.9134—

752.9528≈ 3" embroidery hoop inner diameter

762.9921—

773.0315—

783.0709—

793.1102—

803.1496—

813.1890—

823.2283—

833.2677—

843.3071—

853.3465—

863.3858—

873.4252—

883.4646—

893.5039—

903.5433—

913.5827—

923.6220—

933.6614—

943.7008—

953.7402—

963.7795—

973.8189—

983.8583—

993.8976—

1003.9370≈ 4" embroidery hoop inner diameter