What is day?

A day is a unit of time equal to 24 hours, corresponding to one full rotation of the Earth. It is the primary unit for calendars, deadlines, event scheduling, and date-based calculations.

What is millisecond?

A millisecond is a unit of time equal to one thousandth of a second. It is used in computing, networking, audio and video processing, and measuring reaction times and signal latencies.

Worked examples

1 day = 86,400,000 millisecond

1 millisecond = 0.001 second

More Time conversions

• Convert day to second
• Convert day to minute
• Convert day to hour
• Convert day to week
• Convert day to year (365 d)
• Convert day to millisecond
• Convert day to microsecond
• Convert day to nanosecond
• Convert day to century (100 yr)

Assumption: year is defined as 365 days and century values are approximate.