How Many Minutes Are in a Day?

A day contains exactly 1,440 minutes. This comes from 24 hours × 60 minutes per hour. The figure is universal for any calendar date because a standard day is defined as 24 hours of 60 minutes each.

Quick Answer: There are 1,440 minutes in a day.

Formula

24 hours × 60 minutes = 1,440 minutes

Breakdown — Minutes per Time Unit

Time UnitMinutes
1 hour60
3 hours180
6 hours360
8 hours (standard work day)480
12 hours (half day)720
24 hours (1 day)1,440
1 week (7 days)10,080
1 month (30 days)43,200
1 year (365 days)525,600

Why Exactly 1,440?

The number 1,440 is a direct product of the sexagesimal (base-60) system inherited from ancient Babylon: an hour holds 60 minutes, and a day holds 24 hours. The math: 24 × 60 = 1,440.

1,440 appears often in productivity contexts — e.g., “you have 1,440 minutes per day to spend.” Subtracting sleep (~480 min for 8 hours) leaves about 960 “waking” minutes. Eliminating eating and commuting leaves far fewer — which is the point of the rhetorical framing.

For larger scales: a week holds 10,080 minutes (7 × 1,440), and a 365-day year holds 525,600 minutes (the same number made famous by the musical Rent).

Frequently Asked Questions

How many minutes are in a day?

There are exactly 1,440 minutes in a day (24 hours × 60 minutes per hour).

How many minutes in a week?

There are 10,080 minutes in a week (7 days × 1,440 minutes per day).

How many minutes in 12 hours?

There are 720 minutes in 12 hours (12 × 60). This is also half a day.

How many minutes in a month?

On average, about 43,800 minutes per month (525,600 ÷ 12). The exact number depends on month length: 28 days = 40,320 min, 30 days = 43,200 min, 31 days = 44,640 min.

All values assume a standard 24-hour civil day. Leap seconds (added occasionally by IERS) are ignored; they affect astronomical time but not the civil calendar.

Conversion factors verified against NIST, BIPM, ISO 8601 Second defined by Cs-133 transition (SI, BIPM). Last reviewed: March 2026
Tiago Fernandes Reviewed by Tiago Fernandes