Days to Milliseconds Converter
1 day = 86,400,000 milliseconds
The calendar day is exactly 86,400 s here. Actual solar days vary by milliseconds, and leap seconds have occasionally been added to civil time.
1 day equals 86,400,000 milliseconds
How to convert days to milliseconds
A day here is a duration of 86,400 seconds. Unless explicitly labeled Julian, months and years use the mean Gregorian convention (365.2425 days per year; one twelfth per month), rather than the actual length of a particular calendar interval.
ms = d × 86400000One day is 86400000 milliseconds, so a single multiplication converts any value.
864,000,000 ms = 10 × 86400000The calendar day is exactly 86,400 s here. Actual solar days vary by milliseconds, and leap seconds have occasionally been added to civil time.
Days to milliseconds conversion table
Common values in days, converted to milliseconds.
| Days (d) | Milliseconds (ms) |
|---|---|
| 1 | 86,400,000 |
| 2 | 172,800,000 |
| 5 | 432,000,000 |
| 10 | 864,000,000 |
| 15 | 1,296,000,000 |
| 30 | 2,592,000,000 |
| 60 | 5,184,000,000 |
| 90 | 7,776,000,000 |
| 120 | 10,368,000,000 |
About these units
dayd
Exactly 24 hours, or 86,400 seconds.
millisecondms
One thousandth of a second. The usual unit for network latency and frame times.
Sources and precision
Table results are rounded to 8 significant digits; formula constants may be rounded to 10. Worked example answers use 6 significant digits. The converter starts at 6 significant digits and lets you change display precision. Calculations use the stored factors without intermediate rounding. Exact unit definitions do not make an input measurement more precise; conventional and measured factors follow the assumptions stated here.