Day (d)
24 hours.
Result
1 day = 86,400,000 milliseconds
Day at a glance
| Unit name | Day (plural: days) |
|---|---|
| Symbol | d |
| Quantity measured | Time |
| Measurement system | Metric |
| Also known as | d, days |
| Definition exact? | Yes — exact by definition |
1 day in other time units
| Unit | 1 d equals |
|---|---|
| Nanosecond | 86,400,000,000,000 ns |
| Microsecond | 86,400,000,000 µs |
| Millisecond | 86,400,000 ms |
| Second | 86,400 s |
| Minute | 1,440 min |
| Hour | 24 h |
| Week | 0.142857143 wk |
| Month | 0.032854884 mo |
| Year | 0.002737907 yr |
| Decade | 0.000273791 dec |
| Century | 0.000027379 c |
| Millennium | 0.000002738 ky |
| Fortnight | 0.071428571 fn |
Popular day conversions
Frequently asked questions
- What is a day?
- 24 hours.
- What is the symbol for the day?
- The symbol for the day is d. It measures time.
- How many milliseconds are in a day?
- 1 day = 86,400,000 milliseconds.
- How many seconds are in a day?
- 1 day = 86,400 seconds.
- How many minutes are in a day?
- 1 day = 1,440 minutes.