> ## Documentation Index
> Fetch the complete documentation index at: https://www.integrate.io/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# ETL: HoursBetween

> Calculate the number of hours between two datetime values using a fractional rounding approach. Compare with DATEDIFFHOURS for alternate behavior.

## Description

Returns the number of hours between the end\_datetime and the start\_datetime.

## Syntax

`HoursBetween(end_datetime, start_datetime)`

## Arguments

*end\_datetime* - datetime expression.

*start\_datetime* - datetime expression.

## Examples

`HoursBetween(ToDate('2013-09-10T08:02:31.667Z'),ToDate('2012-03-03T13:34:39.648Z'))` returns 13338

## Return value datatype

Long

## Impact of null value

If input is null, returns null.