Micrometers (µm) to Millimeters (mm) Conversion Calculator – Convert µm to mm

To easily convert micrometer to millimeter this calculator uses Millimeters = Micrometers ÷ 1000 conversion formula, 1 µm equal to 0.0010 mm, and 100 µm equals to 0.1 millimeters.

• Machine part tolerance = 150 micrometers = 0.15 millimeters
• Cell diameter = 25 micrometers = 0.025 millimeters
• Silicon wafer thickness = 725 micrometers = 0.725 millimeters
• Laser wavelength = 550 micrometers = 0.55 millimeters
• Paper thickness = 100 micrometers = 0.1 millimeters

Micrometers to Millimeters Conversion Chart

Micrometers (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
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 Converts to	mm
500	0.500
550	0.550
600	0.600
650	0.650
700	0.700
750	0.750
800	0.800
850	0.850
900	0.900
950	0.950
1000	1.000

Micrometer to MM Conversion Formula

The conversion formula between micrometers (μm) and millimeters (mm) is:

mm = µm ÷ 1,000

Examples:

• 5,000 µm = 5 mm (5,000 ÷ 1,000 = 5)
• 2,500 µm = 2.5 mm (2,500 ÷ 1,000 = 2.5)
• 0.5 mm = 500 µm (0.5 × 1,000 = 500)

How to Convert Micrometer to Millimeter?

To convert from micrometers to millimeters, you can use this simple formula:

• Divide the number of micrometers by 1,000
• Or multiply the number of micrometers by 0.001

• 5,000 µm = 5 mm
• 750 µm = 0.75 mm
• 3,250 µm = 3.25 mm
• 15,000 µm = 15 mm
• 100 µm = 0.1 mm

How many Millimeters in a Micrometer?

One micrometer equals 0.001 millimeters, meaning each millimeter contains 1000 micrometers.

For context, a red blood cell measuring 8 micrometers equals 0.008 millimeters. This relationship demonstrates the microscopic scale of micrometers compared to millimeters.

What are Micrometers and Millimeters?

A micrometer (μm) is a microscopic unit, equaling one-millionth of a meter, commonly used in measuring cellular structures, wavelengths, and precision engineering tolerances. A millimeter (mm) is a larger unit equaling one-thousandth of a meter, used for everyday measurements like small object dimensions and rainfall. The relationship between these units is essential in fields requiring precise measurements across different scales.