Milliseconds Converter

Quick answer

The milliseconds converter converts time between seconds, microseconds, nanoseconds, minutes, hours and more. Choose any “from” and “to” unit, type a number into any field and every other unit updates instantly; all conversion factors are exact definitions.

To
Microseconds
Nanoseconds
Minutes
Hours

Milliseconds are the everyday unit of computing: network latency, reaction times and animation frames. A blink lasts about 100–400 ms, and a 60 Hz screen redraws every 16.7 ms.

How to use the Milliseconds Converter

  1. Pick the unit you are starting from in the From menu and type your value.
  2. Pick the unit you want in the To menu. The heading changes to match, for example “Milliseconds to Seconds Converter”.
  3. The most common time units are shown below at the same time, so you can compare them at a glance.
  4. Type into any result to convert backwards, then use Copy results. The copied text starts with the heading for your chosen units.

Results update as you type. Everything is calculated in your browser.

How it works

Each of the 14 time units on this page is defined by an exact factor relative to the second, the base unit: 1 ms = 0.001 s and 1 µs = 1 × 10⁻⁶ s, for example. The calculator first turns the value you type into seconds, then turns that into the unit you picked in the “To” menu and into microseconds, nanoseconds and minutes. Typing into any result works backwards the same way, so the milliseconds and seconds values always describe the same amount.

How to convert time units

  1. Choose the unit you have in the From menu and type the value, for example 1,000 ms.
  2. Choose the unit you want in the To menu, for example seconds. The page heading changes to “Milliseconds to Seconds Converter”.
  3. The calculator multiplies by the second factor of the “from” unit and divides by the factor of the “to” unit: 1,000 ms × 0.001 ÷ 1 = 1 s.

1 millisecond in common units

Unit Value
Seconds (s) 0.001
Microseconds (µs) 1,000
Nanoseconds (ns) 1,000,000
Minutes (min) 1.666667 × 10-5
Hours (h) 2.777778 × 10-7

Milliseconds conversion table

Milliseconds s µs ns min
1 0.001 1,000 1,000,000 1.666667 × 10-5
16.7 0.0167 16,700 16,700,000 0.00027833333
100 0.1 100,000 100,000,000 0.0016666667
250 0.25 250,000 250,000,000 0.0041666667
1,000 1 1,000,000 1,000,000,000 0.016666667
60,000 60 60,000,000 6 × 1010 1

Time units explained

Millisecond (ms)
A millisecond is one thousandth of a second. Network latency, reaction times and computer timers are measured in milliseconds.
Second (s)
The second is the SI base unit of time, defined by 9,192,631,770 cycles of radiation from a caesium-133 atom.
Minute (min)
A minute is 60 seconds. The base-60 split of hours and minutes comes from ancient Babylonian astronomy.
Hour (h)
An hour is 60 minutes or 3,600 seconds. Wages, shifts and travel times are counted in hours.

Formula

1 ms = 0.001 s 1 ms = 1,000 µs 1 ms = 1,000,000 ns 1 ms = 1.666667 × 10⁻⁵ min 1 ms = 2.777778 × 10⁻⁷ h

Worked example

Inputs: From: 1,000 ms.
Results: To = 1 s; Microseconds = 1,000,000 µs; Nanoseconds = 999,999,999.9999999 ns; Minutes = 0.01666667 min; Hours = 0.00027778 h.

Frequently asked questions

How many milliseconds in a second?

1,000.

How many ms in a minute?

60,000.

What is a good ping?

Under 50 ms feels instant for most online games.

How many seconds are in one millisecond?

1 ms = 0.001 s.

How many microseconds are in one millisecond?

1 ms = 1,000 µs.

How many nanoseconds are in one millisecond?

1 ms = 1,000,000 ns.

Are these time conversions exact?

Yes. Every factor is an exact definition (for example 1 ms = 0.001 s), so any difference you see is rounding in the last displayed digit.

Sources

  1. NIST Special Publication 811: Guide for the Use of the International System of Units
  2. NIST Handbook 44 Appendix C: General tables of units of measurement

Cite this calculator

Speedy Calculator. (2026). Milliseconds Converter. Speedy Calculator. https://speedycalculator.com/calculators/conversion/milliseconds-converter/