MM → Inches
790 mm to inches
790 millimeters equals 31.102362 inches — or about 31 1/8" (nearest 1/16″).
Decimal
31.1024 in
Fraction
31 1/8"
Centimeters
79 cm
Feet
2.5919 ft
mm
31.102362
in≈ 31 1/8" (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 = 790 ÷ 25.4 = 31.102362
Why 790 mm = 31.1024 in
Since 1 inch is defined as exactly 25.4 millimeters, 790 mm converts to 31.102362 inches. Rounded to the nearest 1/16″ that's 31 1/8", which is what you'd read off a standard imperial ruler.