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Microseconds to Milliseconds Converter

Convert microseconds (µs) to milliseconds (ms), with the formula, a conversion table and exact factors.

Change the values and press Calculate to work out your own figures.

Enter a length of time, choose its unit and the unit you want. The answer is exact until it is shown, and the same value appears in every other unit.

About valueA number, fraction (3/8), mixed number (1 1/2), scientific notation (2.5e6) or a simple sum such as 2*3.
About toThe unit you want the answer in. Swap exchanges the two units.
Result
Result
0.001 ms
centuries
3.16887385068 × 10⁻¹⁶ c.
decades
3.16887385068 × 10⁻¹⁵ dec
years (average Gregorian)
3.16887385068 × 10⁻¹⁴ yr
months (average)
3.80264862082 × 10⁻¹³ mo
weeks
1.65343915344 × 10⁻¹² wk
days
1.15740740741 × 10⁻¹¹ d
hours
2.77777777778 × 10⁻¹⁰ h
minutes
1.66666666667 × 10⁻⁸ min
seconds
1 × 10⁻⁶ s
nanoseconds
1,000 ns

1 µs = 0.001 ms

Show the working
  1. 1 µs = 0.001 ms
  2. 1 × 0.001 = 0.001 ms

How to convert microseconds to milliseconds

1 µs = 0.001 ms, so multiply by 0.001 to go from microseconds to milliseconds. Going the other way, 1 ms = 1,000 µs.

ms = µs × 0.001
µs = ms × 1,000

Worked example:

1 µs = 0.001 ms
5 × 0.001 = 0.005 ms

Microseconds to milliseconds table

MicrosecondsMilliseconds
1 µs0.001 ms
2 µs0.002 ms
3 µs0.003 ms
4 µs0.004 ms
5 µs0.005 ms
6 µs0.006 ms
7 µs0.007 ms
8 µs0.008 ms
9 µs0.009 ms
10 µs0.01 ms
15 µs0.015 ms
20 µs0.02 ms
25 µs0.025 ms
30 µs0.03 ms
40 µs0.04 ms
50 µs0.05 ms
75 µs0.075 ms
100 µs0.1 ms
250 µs0.25 ms
500 µs0.5 ms
1000 µs1 ms

About the units

Microseconds (µs)
Microseconds, a metric unit. Definition: BIPM SI Brochure, 9th edition (SI units, prefixes and units accepted for use with the SI).

Formula version 0.1.0Reviewed