# Re: Milestones and tasks - calculating completion %

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5 - Automation Enthusiast

Hello! We are using Airtable for a project plan, where we have one table with tasks and one table with milestones (several tasks are linked to each milestone). We would like to calculate the percentage of tasks completed for each milestone in the milestone table, so we can quickly see that for a specific milestone e.g. 70% of the tasks in the task table have a status of ‘complete’. Thanks in advance for your help!

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18 - Pluto

@Emma_Bremner

After creating your formula field with this formula:

`{Tasks completed} / {Total tasks}`

You will also need to go to the “formatting” tab of that formula field to display your formula results as a percentage, and with the right number of decimal points.

6 Replies 6
18 - Pluto

Hi Emma, I’ve put something together for you here that should do what you’re looking for

Uses conditionals to get the count of completed tasks and calculates the percentage from there

5 - Automation Enthusiast

Hi Adam, thank you so much for putting this together, this is exactly what I’m looking for! Would you mind please sharing the formula you used for the completion % column?

Sure, it’s `{Tasks completed}/{Total tasks}`

For future reference, you can duplicate a base to get all the formulas too!

18 - Pluto

@Emma_Bremner

After creating your formula field with this formula:

`{Tasks completed} / {Total tasks}`

You will also need to go to the “formatting” tab of that formula field to display your formula results as a percentage, and with the right number of decimal points.

5 - Automation Enthusiast

@Adam_TheTimeSavingCo and @ScottWorld brilliant, thank you both very much!

4 - Data Explorer

Hi there, I need the exact same thing!

I created my Milestones on the same table as my Tasks, using the Gantt view, and then linked each task to its corresponding Milestone by using a linked field.

From reading above, it sounds like I should NOT use the Milestones on the Gantt view and should create another table with Milestones and link from there. Is that correct?