Calculated Vs Roll Up Field

Hi folks , i have gathered a quick summary of important differences between a calculate field and a roll up field:

Calculated Field Roll Up Field
Data is calculated as soon as form is loaded The rollups are calculated by scheduled system jobs that run asynchronously in the background.
calculated fields let you automate manual calculations used in your business processes. . A rollup field contains an aggregate value computed over the records related to a specified record
The calculated fields comprise of calculations that use the fields from the current entity or related parent entities. The roll up fields comprise of Aggregation that use the fields from the current entity or related child entities.
The expression support is available on the current entity and the related parent entity fields in the Condition sections and the Action sections. The built-in functions include:

ADDHOURS, ADDDAYS, ADDWEEKS, ADDMONTHS, ADDYEARS, SUBTRACTHOURS, SUBTRACTDAYS, SUBTRACTWEEKS, SUBTRACTMONTHS, SUBTRACTYEARS, DIFFINDAYS, DIFFINHOURS, DIFFINMINUTES, DIFFINMONTHS, DIFFINWEEKS, DIFFINYEARS, CONCAT, TRIMLEFT, and TRIMRIGHT.

Wide selection of aggregate functions. You can aggregate data by using the following functions: SUM, COUNT, MIN, MAXand AVG.
A seamless integration of the calculated fields with the forms, views, charts, and reports is available in real time. eamless integration with the user interface. You can include the rollup fields in forms, views, charts and reports.
The available data types for the calculated field:
Single line of text,Option Set,Two Options,Whole Number,Decimal Number,Currency,Date and Time
The data types include decimal or whole numbers, currency, and date/time.

Above data has been collected from Microsoft technet.

if you wish to know more about these fields in-depth, please follow below:

Calculated Field :  https://technet.microsoft.com/en-us/library/dn832103.aspx

Rollup Field :  https://technet.microsoft.com/en-us/library/dn832162.aspx

 

Hope this helps!

Cheers!

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