Millimetres to micrometres converter

Convert millimetres (mm) to micrometres (µm).

Length converter

Instant conversion

Edit either value. Decimals and scientific notation supported.

From value

Measurement format

From unit

To value

µm

Measurement format

To unit

CONVERSION

1 mm ≈ 1000 µm

Display precision

Precision changes displayed rounding, not calculation accuracy.

FORMULAµm = mm × 1000

FORMULA & EXAMPLES

How to convert Millimetres to micrometres

µm = mm × 1000

Multiply the mm reading by 1000.

Worked examples

25.4 mm ≈ 25400 µm

25.4 × 1000 ≈ 25400

1000 mm ≈ 1000000 µm

1000 × 1000 ≈ 1000000

Millimetres to micrometres table

Fixed reference · Millimetre to Micrometre

Reference values use this page’s named pair and default context. Calculator precision and font settings do not change this table.

Millimetre (mm)	Micrometre (µm)
0	0
0.1	100
0.5	500
1	1000
2	2000
5	5000
10	10000
25	25000
50	50000
100	100000
1000	1000000

Table results use 10 significant figures; decimal formula coefficients use up to 15. Calculations use the unit definitions before rounding. Extra digits do not improve measurement accuracy.

Related conversions

A UNIT FOR EVERYTHING

Explore all converters

18 categories. One place.

Length

m · km · cm and more

Mass

kg · g · mg and more

Area

m² · km² · cm² and more

Volume

L · mL · m³ and more

Temperature

°C · °F · K and more

Speed

m/s · km/h · mph and more

Pressure

Pa · kPa · MPa and more

Energy

J · kJ · MJ and more

Power

W · kW · MW and more

Data storage

B · b · kB and more

Typography

px · pt · pc and more

Time

s · ms · µs and more

Angle

° · rad · gon and more

Frequency

Hz · kHz · MHz and more

Force

N · kN · lbf and more

Data transfer rate

bit/s · kbit/s · Mbit/s and more

Fuel consumption

L/100 km · km/L · mpg (US) and more

Density

kg/m³ · g/cm³ · g/L and more