Microns to Millimeters Conversion Calculator / Convert Micron to Mm

To accurately convert micron to millimeter this converter uses 1 micron (µm) = 0.001 millimeters (mm) formula.

• Bacterial Cell: 2 microns = 0.002 millimeters
• Paint Coating: 100 microns = 0.1 millimeters
• Dust Particle: 40 microns = 0.04 millimeters
• Paper Sheet: 80 microns = 0.08 millimeters
• Optical Fiber: 125 microns = 0.125 millimeters

Microns to Millimeters Conversion Chart

Microns (µm) Converted to	Millimeters (mm)
5	0.005
10	0.010
15	0.015
20	0.020
25	0.025
30	0.030
35	0.035
40	0.040
45	0.045
50	0.050
55	0.055
60	0.060
65	0.065
70	0.070
75	0.075
80	0.080
85	0.085
90	0.090
95	0.095
100	0.100
105	0.105
110	0.110
115	0.115
120	0.120
125	0.125
130	0.130
135	0.135
140	0.140
145	0.145
150	0.150
155	0.155
160	0.160
165	0.165
170	0.170
175	0.175
180	0.180
185	0.185
190	0.190
195	0.195
200	0.200

Microns (µm) Converts to	Millimeters (mm)
205	0.205
210	0.210
215	0.215
220	0.220
225	0.225
230	0.230
235	0.235
240	0.240
245	0.245
250	0.250
255	0.255
260	0.260
265	0.265
270	0.270
275	0.275
280	0.280
285	0.285
290	0.290
295	0.295
300	0.300
305	0.305
310	0.310
315	0.315
320	0.320
325	0.325
330	0.330
335	0.335
340	0.340
345	0.345
350	0.350
355	0.355
360	0.360
365	0.365
370	0.370
375	0.375
380	0.380
385	0.385
390	0.390
395	0.395
400	0.400
405	0.405
410	0.410
415	0.415
420	0.420
425	0.425
430	0.430
435	0.435
440	0.440
445	0.445
450	0.450
455	0.455
460	0.460
465	0.465
470	0.470
475	0.475
480	0.480
485	0.485
490	0.490
495	0.495
500	0.500

µm converted to	Millimeters
500	0.500
600	0.600
700	0.700
800	0.800
900	0.900
1000	1.000

Micron to mm Conversion Formula

The conversion formula is:

1 micron = 0.001 millimeters.

Other Format are:

• Standard Algebraic Format: x mm = x µm ÷ 1,000 x µm = x mm × 1,000
• Simplified Fraction Format: mm = µm / 1,000 µm = mm × 1,000
• Decimal Conversion Format: 1 mm = 1,000 µm 1 µm = 0.001 mm
• Exponential Notation: mm = µm × 10^-3, µm = mm × 10^3
• Proportional Equation: µm : mm = 1,000 : 1

How to Convert Microns to Millimeters?

To convert any micron value to millimeters, multiply the micron value by 0.001.

• Take your micron measurement.
• Multiply it by 0.001.
• Express the result in millimeters.

Converting 500 microns:

500 × 0.001 = 0.5 millimeters.

Converting 300 microns:

300 × 0.001 = 0.3 millimeters.

How thick is 50 microns?

A 50-micron thickness equals 0.05 millimeters, comparable to a thin plastic shopping bag.

This measurement is frequently encountered in 3D printing layer heights and industrial films. To visualize, it’s approximately half the thickness of a standard piece of copy paper.

How thick is 2.5 microns?

A 2.5-micron thickness equals 0.0025 millimeters, which is incredibly thin and barely visible to the naked eye.

This scale is common in air filtration systems and microprocessor manufacturing. For perspective, it’s about 1/30th the diameter of a human hair.

What are Microns and Millimeters?

Microns (micrometers) and millimeters are metric units of length, with microns being used for microscopic measurements. One micron equals one-thousandth of a millimeter, making it suitable for measuring things like cell dimensions, dust particles, and semiconductor components. Millimeters, being larger, are used for everyday measurements like paper thickness, wire diameter, and small object dimensions.