um to nm Converter - Micrometer to Nanometer

Micrometer (μm) (um) to Nanometer (nm)

Direct answer

1 um = 1,000 nm

nm = um × 1,000

Converter

Input

Result

1,000nm

nm = um × 1,000

um = nm × 0.001

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

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

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

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 um = 1,000 nm.

10 um = 10,000 nm.

100 um = 100,000 nm.

Use nm = um × 1,000.

1 nm = 0.001 um.

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