Use case

This calculated field returns the time left before an issue is due, if a due date has been set.


Create a new Calculated Number Field (by JWT) custom field and name it properly.

Providing a description will help you to identify what the custom field does but this step is optional

Parser expression

Add the following expression:

Math expression for Calculated number field:
{issue.dueDate} != null ? max({issue.dueDate} - {system.currentDateTime}, 0) : null 
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To achieve this, the following functions are used:

  • Conditional operator
  • max() is used to avoid returning a negative duration when the Due date has passed.

Display format

Choose Duration as Content type

Choose Short as Duration display format

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For this use case the format duration was chosen, since the numeric value being calculated, a number of milliseconds, represents a time duration.

This way the value is represented like 2d 9h 43m instead of a single number.

Check the parameter Uninitialized when calculated value is zero

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This parameter is set to stop calculation once the Due Date has been reached.

Add the field to the relevant view screens.

Remember: All calculated fields are read-only and cannot be manually updated on a create or edit screen.

Check the results

Once configured and added to an issue screen, the result will look like this:

If you still have questions, feel free to refer to our support team.