# Day Conversion Calculator

Enter a value in days below to convert to another unit of time.

## What Is a Day?

A day is a unit used to measure time.

The day is an SI accepted unit for time for use with the metric system. Days can be abbreviated as d; for example, 1 day can be written as 1 d.

## How Much Is a Day?

One day is the time it takes for the Earth to complete a single 360-degree rotation about its axis. There are 24 hours in a day.

## How to Convert Days

To convert days to another unit of time, you need to multiply the value by a conversion factor. A conversion factor is a numerical value used to change the units of a measurement without changing the value.[1]

You can find the conversion factors for days in the conversion table below.

Then, multiply the time measurement by the conversion factor to find the equivalent value in the desired unit of measurement.

days × conversion factor = result

You can also use a calculator, such as one of the converters below, for the conversion.

## Day Conversion Table

Days and the equivalent time durations
days centuries decades years months weeks hours minutes seconds milliseconds microseconds nanoseconds
1 d 0.000027379 c 0.000274 0.002738 yr 0.032855 mo 0.142857 wk 24 hr 1,440 min 86,400 s 86,400,000 ms 86,400,000,000 µs 86,400,000,000,000 ns
2 d 0.000054758 c 0.000548 0.005476 yr 0.06571 mo 0.285714 wk 48 hr 2,880 min 172,800 s 172,800,000 ms 172,800,000,000 µs 172,800,000,000,000 ns
3 d 0.000082137 c 0.000821 0.008214 yr 0.098565 mo 0.428571 wk 72 hr 4,320 min 259,200 s 259,200,000 ms 259,200,000,000 µs 259,200,000,000,000 ns
4 d 0.00011 c 0.001095 0.010952 yr 0.13142 mo 0.571429 wk 96 hr 5,760 min 345,600 s 345,600,000 ms 345,600,000,000 µs 345,600,000,000,000 ns
5 d 0.000137 c 0.001369 0.01369 yr 0.164274 mo 0.714286 wk 120 hr 7,200 min 432,000 s 432,000,000 ms 432,000,000,000 µs 432,000,000,000,000 ns
6 d 0.000164 c 0.001643 0.016427 yr 0.197129 mo 0.857143 wk 144 hr 8,640 min 518,400 s 518,400,000 ms 518,400,000,000 µs 518,400,000,000,000 ns
7 d 0.000192 c 0.001917 0.019165 yr 0.229984 mo 1 wk 168 hr 10,080 min 604,800 s 604,800,000 ms 604,800,000,000 µs 604,800,000,000,000 ns
8 d 0.000219 c 0.00219 0.021903 yr 0.262839 mo 1.142857 wk 192 hr 11,520 min 691,200 s 691,200,000 ms 691,200,000,000 µs 691,200,000,000,000 ns
9 d 0.000246 c 0.002464 0.024641 yr 0.295694 mo 1.285714 wk 216 hr 12,960 min 777,600 s 777,600,000 ms 777,600,000,000 µs 777,600,000,000,000 ns
10 d 0.000274 c 0.002738 0.027379 yr 0.328549 mo 1.428571 wk 240 hr 14,400 min 864,000 s 864,000,000 ms 864,000,000,000 µs 864,000,000,000,000 ns
11 d 0.000301 c 0.003012 0.030117 yr 0.361404 mo 1.571429 wk 264 hr 15,840 min 950,400 s 950,400,000 ms 950,400,000,000 µs 950,400,000,000,000 ns
12 d 0.000329 c 0.003285 0.032855 yr 0.394259 mo 1.714286 wk 288 hr 17,280 min 1,036,800 s 1,036,800,000 ms 1,036,800,000,000 µs 1,036,800,000,000,000 ns
13 d 0.000356 c 0.003559 0.035593 yr 0.427113 mo 1.857143 wk 312 hr 18,720 min 1,123,200 s 1,123,200,000 ms 1,123,200,000,000 µs 1,123,200,000,000,000 ns
14 d 0.000383 c 0.003833 0.038331 yr 0.459968 mo 2 wk 336 hr 20,160 min 1,209,600 s 1,209,600,000 ms 1,209,600,000,000 µs 1,209,600,000,000,000 ns
15 d 0.000411 c 0.004107 0.041069 yr 0.492823 mo 2.142857 wk 360 hr 21,600 min 1,296,000 s 1,296,000,000 ms 1,296,000,000,000 µs 1,296,000,000,000,000 ns
16 d 0.000438 c 0.004381 0.043807 yr 0.525678 mo 2.285714 wk 384 hr 23,040 min 1,382,400 s 1,382,400,000 ms 1,382,400,000,000 µs 1,382,400,000,000,000 ns
17 d 0.000465 c 0.004654 0.046544 yr 0.558533 mo 2.428571 wk 408 hr 24,480 min 1,468,800 s 1,468,800,000 ms 1,468,800,000,000 µs 1,468,800,000,000,000 ns
18 d 0.000493 c 0.004928 0.049282 yr 0.591388 mo 2.571429 wk 432 hr 25,920 min 1,555,200 s 1,555,200,000 ms 1,555,200,000,000 µs 1,555,200,000,000,000 ns
19 d 0.00052 c 0.005202 0.05202 yr 0.624243 mo 2.714286 wk 456 hr 27,360 min 1,641,600 s 1,641,600,000 ms 1,641,600,000,000 µs 1,641,600,000,000,000 ns
20 d 0.000548 c 0.005476 0.054758 yr 0.657098 mo 2.857143 wk 480 hr 28,800 min 1,728,000 s 1,728,000,000 ms 1,728,000,000,000 µs 1,728,000,000,000,000 ns

## Day Conversion Calculators

You can also convert time using one of our day converters below.

## References

1. National Institute of Standards & Technology, Unit Conversion, https://www.nist.gov/pml/owm/metric-si/unit-conversion