⏱️ Microseconds to Milliseconds Converter

5.0 out of 5 (1 rating)

Enter details

1 microsecond =
0.001 milliseconds
1 millisecond =
1,000 microseconds
Formula
ms = µs × 0.001
Handy values
100 µs = 0.1 ms · 1,000 µs = 1 ms · 10,000 µs = 10 ms

Conversion at a glance

Microseconds to Milliseconds conversion: 1 microsecond = 0.001 milliseconds, formula ms = µs × 0.001
1 microsecond = 0.001 milliseconds. Multiply by 0.001 to convert; examples: 100 µs = 0.1 ms; 500 µs = 0.5 ms; 1,000 µs = 1 ms

Rate this calculator

Was it useful? A quick star rating helps others — and you can leave a comment too.
Rate it: ★ ★ ★ ★ ★

⚡ Microseconds to Milliseconds: the quick answer

1 µs = 0.001 ms 1 microsecond equals 0.001 milliseconds

To convert microseconds to milliseconds, multiply the value by 0.001. To go the other way, multiply milliseconds by 1,000 to get microseconds.

↔ Convert milliseconds to microseconds instead

🧮 Formula

Microseconds to Milliseconds
ms = µs × 0.001
Milliseconds to Microseconds
µs = ms × 1,000

Where

  • µs = the time in microseconds
  • ms = the time in milliseconds
Every unit here is defined by its time in seconds, so the conversion factor is (seconds per microsecond) ÷ (seconds per millisecond).

📊 Microseconds to Milliseconds conversion table

Microseconds (µs)Milliseconds (ms)
1 µs0.001 ms
5 µs0.005 ms
10 µs0.01 ms
25 µs0.025 ms
50 µs0.05 ms
100 µs0.1 ms
250 µs0.25 ms
500 µs0.5 ms
1,000 µs1 ms
2,500 µs2.5 ms
5,000 µs5 ms
10,000 µs10 ms
100,000 µs100 ms
1,000,000 µs1,000 ms

✏️ Worked examples

Convert 25 microseconds to milliseconds

25 µs × 0.001 = 0.025 ms

Try this example →

Convert 250 microseconds to milliseconds

250 µs × 0.001 = 0.25 ms

Try this example →

📘 About these units

Microsecond (µs). A microsecond is one millionth of a second.

Millisecond (ms). A millisecond is one thousandth of a second, used for reaction times and computer timing.

❓ Frequently asked questions

How many milliseconds are in one microsecond?

There are 0.001 milliseconds in one microsecond.

How do I convert microseconds to milliseconds?

Multiply the number of microseconds by 0.001. For example, 10 microseconds equal 0.01 milliseconds.

How many microseconds are in one millisecond?

One millisecond equals 1,000 microseconds.

How many milliseconds is 1,000 microseconds?

1 millisecond. Other common values: 100 microseconds = 0.1 milliseconds and 10,000 microseconds = 10 milliseconds.

What people are saying
★★★★★
Anonymous · 22 Oct 2026