MM → Inches
15 mm to inches
15 millimeters equals 0.590551 inches — or about 9/16" (nearest 1/16″).
Decimal
0.5906 in
Fraction
9/16"
Centimeters
1.5 cm
Feet
0.0492 ft
mm
0.590551
in≈ 9/16" (nearest 1/16)
1 in = 25.4 mm · tolerance ±0.0001
Formula
To convert mm to inches, divide by 25.4:
inches = mm ÷ 25.4
inches = 15 ÷ 25.4 = 0.590551
Why 15 mm = 0.5906 in
Since 1 inch is defined as exactly 25.4 millimeters, 15 mm converts to 0.590551 inches. Rounded to the nearest 1/16″ that's 9/16", which is what you'd read off a standard imperial ruler.