mm to nm Converter - Millimeter to Nanometer

Millimeter (mm) to Nanometer (nm)

Direct answer

1 mm = 1,000,000 nm

nm = mm × 1,000,000

Converter

Input

Result

1,000,000nm

nm = mm × 1,000,000

mm = nm × 0.000001

Example: 10 mm = 10 × 1,000,000 = 10,000,000 nm.

Express both mm and nm in the same base unit m (meter), then cancel the shared base unit.

1
Rewrite mm in the base unit
$1 mm = 0.001 m$
2
Rewrite nm in the base unit
$1 nm = 1 \times 1 0^{- 9} m$
3
Forward conversion
$1 mm = \frac{0.001 m}{1 \times 1 0 ^{- 9} m} \times 1 nm = \frac{0.001}{1 \times 1 0 ^{- 9}} nm = 1, 000, 000 nm$
4
Reverse conversion
$1 nm = \frac{1 \times 1 0 ^{- 9} m}{0.001 m} \times 1 mm = \frac{1 \times 1 0 ^{- 9}}{0.001} mm = 0.000001 mm$

A guarded explanation for this pair page covering definition, principle, assumptions, and cautions.

Guarded output

AI text is for interpretation only. The page calculator remains the source of truth for numeric results.

1 mm = 1,000,000 nm.

10 mm = 10,000,000 nm.

100 mm = 100,000,000 nm.

Use nm = mm × 1,000,000.

1 nm = 0.000001 mm.

Use the conversion factor and round the result to the precision required by your calculation.