# Convert Days to Seconds using JavaScript Fri Jan 28 20222 min read Photo by Meiying Ng

## Convert days to seconds using JavaScript#

To convert days to seconds, multiply the days by `24` for the hours, `60` for the minutes and `60` for the seconds, e.g. `days * 24 * 60 * 60`. The result from the multiplication will represent the seconds equivalent for the number of days.

index.js
```Copied!```function daysToSeconds(days) {
// 👇️        hour  min  sec
return days * 24 * 60 * 60;
}

console.log(daysToSeconds(1)); // 👉️ 86400
console.log(daysToSeconds(2)); // 👉️ 172800
console.log(daysToSeconds(5)); // 👉️ 432000
``````

We created a reusable function that takes the number of days as parameter and converts the days to seconds.

To convert the days to seconds, we have to multiply by `24` to convert to hours, `60` to convert to minutes and `60` to convert to seconds.

If your application uses fractional units for the days, you might get a decimal number after the conversion.

index.js
```Copied!```function daysToSeconds(days) {
// 👇️        hour  min  sec
return days * 24 * 60 * 60;
}

console.log(daysToSeconds(3.5612)); // 👉️ 307687.68
``````

You can use the `Math.round()` function to round the number to the nearest integer.

index.js
```Copied!```function daysToSeconds(days) {
// 👇️                   hour  min  sec
return Math.round(days * 24 * 60 * 60);
}

console.log(daysToSeconds(3.5612)); // 👉️ 307688
``````

We passed the value to the Math.round function to round to the nearest integer and make sure we don't get a decimal after the conversion.

Here are some examples of how the `Math.round` function works.

index.js
```Copied!```console.log(Math.round(7.49)); // 👉️ 7
console.log(Math.round(7.5)); // 👉️ 8
``````

The function rounds the number up or down to the nearest integer.

If the number is positive and its fractional part is greater than or equal to `0.5`, it gets rounded to the next higher absolute value.

If the number is positive and its fractional portion is less than `0.5`, it gets rounded to the lower absolute value.

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