Convert Microsecond to Second
1 microsecond = 0.000001 second (s). For example, 10 microsecond = 0.00001 second and 100 microsecond = 0.0001 second. Type any value below to convert microsecond to second both ways — it runs entirely in your browser.
Quick answer: Microsecond to Second
1 Microsecond = 0.000001 Second (µs → s). To convert microsecond to second, multiply by 0.000001. To convert second to microsecond, multiply by 1,000,000. The converter at the top does this instantly and both ways; the sections below give the formula, worked examples, a full conversion chart and answers to the most common microsecond-to-second questions.
How to convert Microsecond to Second
To convert microsecond to second, multiply the number of microsecond by the conversion factor 0.000001, because 1 µs = 0.000001 s. The conversion is linear, so the same factor works for any value — whole numbers, decimals or fractions. For the reverse direction, 1 s = 1,000,000 µs, so you divide by 0.000001 (or multiply by 1,000,000) to turn second back into microsecond.
s = µs × 0.000001 ·
µs = s × 1,000,000
- Write down the value you want to convert, in microsecond.
- Multiply it by 0.000001.
- The result is the same area/length/quantity expressed in second.
Microsecond to Second — worked examples
Each row shows the exact arithmetic so you can follow the conversion step by step. For example, 5 microsecond is 0.000005 second because 5 µs × 0.000001 = 0.000005 s.
| Microsecond | Calculation | Second |
|---|---|---|
| 1 µs | 1 µs × 0.000001 = 0.000001 s | 0.000001 s |
| 2 µs | 2 µs × 0.000001 = 0.000002 s | 0.000002 s |
| 3 µs | 3 µs × 0.000001 = 0.000003 s | 0.000003 s |
| 5 µs | 5 µs × 0.000001 = 0.000005 s | 0.000005 s |
| 7 µs | 7 µs × 0.000001 = 0.000007 s | 0.000007 s |
| 10 µs | 10 µs × 0.000001 = 0.00001 s | 0.00001 s |
| 12 µs | 12 µs × 0.000001 = 0.000012 s | 0.000012 s |
| 15 µs | 15 µs × 0.000001 = 0.000015 s | 0.000015 s |
| 20 µs | 20 µs × 0.000001 = 0.00002 s | 0.00002 s |
| 25 µs | 25 µs × 0.000001 = 0.000025 s | 0.000025 s |
| 50 µs | 50 µs × 0.000001 = 0.00005 s | 0.00005 s |
| 100 µs | 100 µs × 0.000001 = 0.0001 s | 0.0001 s |
Common Microsecond to Second conversions
These are the microsecond-to-second values people look up most often. Every figure is computed from the exact factor, so you can rely on them for quick reference:
- 1 microsecond = 0.000001 second
- 2 microsecond = 0.000002 second
- 2.5 microsecond = 0.0000025 second
- 3 microsecond = 0.000003 second
- 4 microsecond = 0.000004 second
- 5 microsecond = 0.000005 second
- 6 microsecond = 0.000006 second
- 7 microsecond = 0.000007 second
- 8 microsecond = 0.000008 second
- 9 microsecond = 0.000009 second
- 10 microsecond = 0.00001 second
- 12 microsecond = 0.000012 second
- 15 microsecond = 0.000015 second
- 20 microsecond = 0.00002 second
- 25 microsecond = 0.000025 second
- 30 microsecond = 0.00003 second
- 50 microsecond = 0.00005 second
- 75 microsecond = 0.000075 second
- 100 microsecond = 0.0001 second
- 200 microsecond = 0.0002 second
- 500 microsecond = 0.0005 second
- 1000 microsecond = 0.001 second
Microsecond to Second conversion chart (both directions)
The chart below converts microsecond to second and second to microsecond side by side, so it works whichever way you need. 1 microsecond = 0.000001 second, and 1 second = 1,000,000 microsecond.
| Microsecond → Second | Second → Microsecond |
|---|---|
| 0.25 µs = 0.00000025 s | 0.25 s = 250,000 µs |
| 0.5 µs = 0.0000005 s | 0.5 s = 500,000 µs |
| 1 µs = 0.000001 s | 1 s = 1,000,000 µs |
| 2 µs = 0.000002 s | 2 s = 2,000,000 µs |
| 3 µs = 0.000003 s | 3 s = 3,000,000 µs |
| 4 µs = 0.000004 s | 4 s = 4,000,000 µs |
| 5 µs = 0.000005 s | 5 s = 5,000,000 µs |
| 6 µs = 0.000006 s | 6 s = 6,000,000 µs |
| 7 µs = 0.000007 s | 7 s = 7,000,000 µs |
| 8 µs = 0.000008 s | 8 s = 8,000,000 µs |
| 9 µs = 0.000009 s | 9 s = 9,000,000 µs |
| 10 µs = 0.00001 s | 10 s = 10,000,000 µs |
| 12 µs = 0.000012 s | 12 s = 12,000,000 µs |
| 15 µs = 0.000015 s | 15 s = 15,000,000 µs |
| 20 µs = 0.00002 s | 20 s = 20,000,000 µs |
| 25 µs = 0.000025 s | 25 s = 25,000,000 µs |
| 30 µs = 0.00003 s | 30 s = 30,000,000 µs |
| 40 µs = 0.00004 s | 40 s = 40,000,000 µs |
| 50 µs = 0.00005 s | 50 s = 50,000,000 µs |
| 75 µs = 0.000075 s | 75 s = 75,000,000 µs |
| 100 µs = 0.0001 s | 100 s = 100,000,000 µs |
| 150 µs = 0.00015 s | 150 s = 150,000,000 µs |
| 200 µs = 0.0002 s | 200 s = 200,000,000 µs |
| 250 µs = 0.00025 s | 250 s = 250,000,000 µs |
| 500 µs = 0.0005 s | 500 s = 500,000,000 µs |
| 1000 µs = 0.001 s | 1000 s = 1,000,000,000 µs |
Microsecond vs Second: which is bigger?
A second is the larger unit: one second equals 1,000,000 microseconds. Put another way, you need 1,000,000 microseconds to make a single second.
What is a Microsecond? History, origin and usage
The microsecond uses the SI prefix micro- (from the Greek mikros, small) on the second to mean one millionth of a second. Like the other sub-second units it became practically important as instrumentation and electronics gained the resolution to measure such intervals.
The microsecond is used for high-resolution timing in electronics and physics, including signal and pulse timing, camera and electronic flash durations, and the latency targets of high-frequency financial trading. It bridges the gap between the millisecond of human-scale events and the nanosecond of raw circuitry.
A microsecond is to one second roughly as one second is to about eleven and a half days, which helps convey how brief it is. A bolt of lightning's main stroke and many laser pulses play out on microsecond timescales.
What is a Second? History, origin and usage
The second descends from the medieval Latin secunda pars minuta, the second small part, meaning the result of dividing the hour by sixty twice in the Babylonian-derived sexagesimal system. For most of history it was defined astronomically as a fraction of the day, until 1967 when the 13th General Conference on Weights and Measures redefined it as the duration of 9,192,631,770 periods of radiation from the caesium-133 atom.
The second is the SI base unit of time and the foundation of essentially all scientific measurement, timekeeping, navigation and telecommunications. Everyday stopwatches, timeouts and short durations are counted in seconds, while atomic clocks realise it for global systems like GPS.
The second is the most precisely realised of all the SI units, and several other units, including the metre, are now defined in terms of it. Modern optical atomic clocks already keep time far more accurately than the caesium standard that currently defines the second.
Convert 1 Microsecond to other units
It can help to see a microsecond next to the other units it is commonly compared with. One microsecond (µs) is equal to:
| 1 Microsecond equals | Unit |
|---|---|
| 1,000 ns | Nanosecond |
| 0.001 ms | Millisecond |
| 0.000001 s | Second |
| 0.00000001666667 min | Minute |
| 0.0000000002777778 hr | Hour |
| 0.00000000001157407 day | Day |
| 0.000000000001653439 wk | Week |
Convert 1 Second to other units
One second (s) is equal to:
| 1 Second equals | Unit |
|---|---|
| 1,000,000,000 ns | Nanosecond |
| 1,000,000 µs | Microsecond |
| 1,000 ms | Millisecond |
| 0.01666667 min | Minute |
| 0.0002777778 hr | Hour |
| 0.00001157407 day | Day |
| 0.000001653439 wk | Week |
Tips for converting Microsecond to Second
- To go from microsecond to second, multiply by 0.000001; to go back, divide by 0.000001 (or multiply by 1,000,000).
- For a quick mental estimate, remember that 1 microsecond ≈ 0.000001 second, so 10 microsecond ≈ 0.00001 second.
- The converter above keeps full precision; the tables round for readability, so use the tool for exact figures.
- Both fields update live as you type — change either side to convert in that direction.
How to use this Microsecond to Second converter
Type a number into the Microsecond field and the equivalent in Second appears instantly — there is no “convert” button to press and nothing is sent to a server, so it works offline once the page has loaded and is safe for any data. You can also type into the Second field to convert the other way (second to microsecond). Use the swap control to flip the two units, and copy the result with a single click. Because the calculation runs in your browser with full floating-point precision, the converter is more exact than the rounded figures shown in the reference chart above — use the chart for quick look-ups and the tool for precise work.
Accuracy and method
Every figure on this page — the formula, the worked examples, the conversion chart and the “convert to other units” tables — is computed from a single verified conversion factor (1 µs = 0.000001 s), never copied from a hand-typed lookup table that could drift. That factor is derived from each unit’s definition in terms of a common base unit, and an automated check re-verifies all of the site’s factors on every update, so the numbers here stay correct over time. This matters for microsecond-to-second conversions because a small rounding error in a published table compounds quickly at larger quantities; computing from the exact factor avoids that.
Sources
- BIPM — The International System of Units (SI Brochure) — the defining document for the SI, published by the International Bureau of Weights and Measures. It fixes the base unit that this conversion resolves to, which is why the factor here can be exact rather than approximate.
- NIST — Definitions of the SI base units — the US National Institute of Standards and Technology reference for the SI base units, used here as an independent cross-check on the base-unit definition.
Frequently asked questions
- How many second are in 1 microsecond?
- 1 microsecond = 0.000001 second (s). To convert any number of microsecond to second, multiply by 0.000001.
- How do I convert microsecond to second?
- Multiply the number of microsecond by 0.000001. For example, 10 microsecond = 10 × 0.000001 = 0.00001 second, and 25 microsecond = 0.000025 second.
- How many microsecond are in 1 second?
- 1 second = 1,000,000 microsecond. So to convert second back to microsecond, multiply by 1,000,000.
- What is the formula to convert microsecond to second?
- second = microsecond × 0.000001. The reverse formula is microsecond = second × 1,000,000.
- How much is 100 microsecond in second?
- 100 microsecond = 0.0001 second. (And 1000 microsecond = 0.001 second.)
- Which is bigger, a microsecond or a second?
- A second is larger: 1 second = 1,000,000 microsecond.
- Is this microsecond to second converter accurate?
- Yes — every value is computed from the exact 0.000001 s per µs factor (not rounded look-up tables), and the factors are re-verified automatically on every update.
- Can I convert second to microsecond too?
- Yes. The converter works both ways — enter a value in either field. 1 second = 1,000,000 microsecond.