Get time difference between two dates in javascript. In this tutorial, we will explain how to calculate the difference between two dates and get the difference in hours, minutes and seconds.

When you work with javascript date, time, day methods. So you should also read this javascript date, time, day related posts:

- javaScript Get Current Date Time
- Get UTC Hours, Minutes, Seconds, MilliSeconds javascript
- javascript date setUTCHours() Method With Examples

## Calculate time difference between two dates in JavaScript

Here are some examples to calculate time difference between in two dates:

- Calculate Difference in Days
- Calculate Difference in Hours
- Calculate Difference in Minutes
- Calculate Difference in Seconds

### Calculate Difference in Days

Here, we will create a javascript that is used to calculate the difference between two dates in days.

Use the given below function, To calculate the difference between 2 dates and get difference days.

```
function daysDiff(dt1, dt2)
{
// calculate the time difference of two dates JavaScript
var diffTime =(dt2.getTime() - dt1.getTime());
// calculate the number of days between two dates javascript
var daysDiff = diffTime / (1000 * 3600 * 24);
return daysDiff;
}
```

#### Ex:-

```
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>calculate difference between two dates in days javascript</title>
</head>
<body>
<script type = "text/javascript">
function daysDiff(dt1, dt2)
{
// calculate the time difference of two dates JavaScript
var diffTime =(dt2.getTime() - dt1.getTime());
// calculate the number of days between two dates javascript
var daysDiff = diffTime / (1000 * 3600 * 24);
return daysDiff;
}
dt1 = new Date("2019-11-27");
dt2 = new Date("2019-11-29");
var days = daysDiff(dt1, dt2)
document.write( "calculate difference between two dates in days javascript :- " + days );
</script>
</body>
</html>
```

Result Of the above code is: 2 days

### Calculate Difference in Hours

Next, we will create a javascript that is used to calculate the difference between two dates in hours.

Use the given below function, get the difference between 2 dates and get a different hours.

```
function hoursDiff(dt1, dt2)
{
// calculate the time difference of two dates JavaScript
var diffTime =(dt2.getTime() - dt1.getTime());
// calculate the number of days between hours dates javascript
var hoursDiff = diffTime / (1000 * 3600);
return hoursDiff;
}
```

#### Ex:-

```
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>calculate difference between two dates in hours javascript</title>
</head>
<body>
<script type = "text/javascript">
function hoursDiff(dt1, dt2)
{
// calculate the time difference of two dates JavaScript
var diffTime =(dt2.getTime() - dt1.getTime());
// calculate the number of days between hours dates javascript
var hoursDiff = diffTime / (1000 * 3600);
return hoursDiff;
}
dt1 = new Date("2019-11-27");
dt2 = new Date("2019-11-29");
var hours = hoursDiff(dt1, dt2)
document.write( "calculate difference between two dates in hours javascript :- " + hours );
</script>
</body>
</html>
```

Result Of the above code is: 48 hours

### Calculate Difference in Minutes

Now, we will create a javascript that is used to calculate the difference between two dates in minutes.

Use the given below function, to get the difference between 2 dates and get difference minutes.

```
function minutesDiff(dt1, dt2)
{
var diffMin =(dt2.getTime() - dt1.getTime()) / 1000;
diff /= 60;
return Math.abs(Math.round( diffMin ));
}
```

#### Ex:-

```
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>calculate difference between two dates in minutes javascript</title>
</head>
<body>
<script type = "text/javascript">
function minutesDiff(dt1, dt2)
{
var diffMin =(dt2.getTime() - dt1.getTime()) / 1000;
diff /= 60;
return Math.abs(Math.round( diffMin ));
}
dt1 = new Date("2019-11-27");
dt2 = new Date("2019-11-28");
var minutes = minutesDiff(dt1, dt2)
document.write( "calculate difference between two dates in minutes javascript :- " + minutes );
</script>
</body>
</html>
```

Result Of the above code is: 1440 minutes

### 4. Calculate Difference in Seconds

If you want to create a similar function to calculate the difference in seconds between two dates, you can follow a comparable approach. Here’s a secondsDiff function:

function secondsDiff(dt1, dt2) { var diffTime = dt2.getTime() - dt1.getTime(); var secondsDiff = diffTime / 1000; return secondsDiff; } // Example usage const startDate = new Date('2023-01-01T12:00:00'); const endDate = new Date('2023-01-02T15:30:00'); const differenceInSeconds = secondsDiff(startDate, endDate); console.log(`Difference in seconds: ${differenceInSeconds} seconds`);

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