Convert 42 mm to fractional inches

"Millimeters to Fractional Inches" Calculator
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How many fractional inches in 42 millimeters?

Answer

42 mm ≈ 1 21/32″

42 mm ≈ 1.6535″ · decimal inches

Nearest 1/64″ mark: 1 21/32″ = 42.06875 mm, 0.06875 mm over 42 mm. On a tape measure (1/16″): 1 5/8″ = 41.275 mm, 0.725 mm short of 42 mm.

11 1/41 1/21 3/423035404550inmm42 mm1 21/32″

42 ÷ 25.4 ≈ 1.6535″; 42 ÷ 25.4 × 64 ≈ 105.8268 → 106/64″ = 1 21/32″

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Millimeters to Fractional Inches Conversion Table

mmFractional InchesDecimal Inches
27≈ 1 1/16″≈ 1.063″
28≈ 1 7/64″≈ 1.1024″
29≈ 1 9/64″≈ 1.1417″
30≈ 1 3/16″≈ 1.1811″
31≈ 1 7/32″≈ 1.2205″
32≈ 1 17/64″≈ 1.2598″
33≈ 1 19/64″≈ 1.2992″
34≈ 1 11/32″≈ 1.3386″
35≈ 1 3/8″≈ 1.378″
36≈ 1 27/64″≈ 1.4173″
37≈ 1 29/64″≈ 1.4567″
38≈ 1 1/2″≈ 1.4961″
39≈ 1 17/32″≈ 1.5354″
40≈ 1 37/64″≈ 1.5748″
41≈ 1 39/64″≈ 1.6142″
42≈ 1 21/32″≈ 1.6535″
43≈ 1 11/16″≈ 1.6929″
44≈ 1 47/64″≈ 1.7323″
45≈ 1 49/64″≈ 1.7717″
46≈ 1 13/16″≈ 1.811″
47≈ 1 27/32″≈ 1.8504″
48≈ 1 57/64″≈ 1.8898″
49≈ 1 59/64″≈ 1.9291″
50≈ 1 31/32″≈ 1.9685″
51≈ 2 1/64″≈ 2.0079″
52≈ 2 3/64″≈ 2.0472″
53≈ 2 3/32″≈ 2.0866″
54≈ 2 1/8″≈ 2.126″
55≈ 2 11/64″≈ 2.1654″
56≈ 2 13/64″≈ 2.2047″

FAQ

How many fractional inches in 42 millimeters?

42 mm ≈ 1 21/32″

What is the formula to convert 42 mm to fractional inches?

The formula is: inches = mm ÷ 25.4. For 42 mm: 42 ÷ 25.4 ≈ 1.6535″, nearest SAE fraction: 1 21/32″.

What are SAE fractions and why convert mm to fractional inches?

SAE fractions are standard inch sizes with denominators of 2, 4, 8, 16, 32, 64. They are used in American tools, automobiles, and fasteners.

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