The formula field was enhanced to support returning numeric values for Time Tracking Log and Duration fields, allowing Solution Managers to configure formulas that evaluate the numeric time value of the fields. This feature can be used to aggregate time values across multiple linked records, or to perform other calculations such as multiplying hours by a rate to determine a final price.

These fields have granularity at the second level, so referencing them in a formula will return the number of seconds for the Time Tracking or Duration field. To derive hours, simply divide the returned value by 3600 (the number of seconds in an hour. For example: ROUND([Time Tracking Log]/3600,2) will return 1.50 if the value of the field is 1h 30m.