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The Goal Seek add-on for Google Sheetsᵀᴹ enables users to calculate the required value of a cell to achieve a desired formula value in another cell.
Listing updated:May 11, 2023
Works with:
3M+
Overview
If you know the result you need from a formula, you can use the Goal Seek add-on to find the missing value needed to achieve it.
You can use the add-on to conduct break-even analysis, or determine subcomponent targets when modeling future outcomes. You can also modify parameters, like max iterations, tolerance and max execution time that Goal Seek uses to determine a solution or load previous calculations.

There are three components to configure:
- the target value 
- the changing cell (where the formula is)
- the output value to achieve

Learn more about the add-on on support.google.com/docs/answer/9506732.
Additional information
PricingFree of charge
Developer
Privacy policy
Terms of service
Goal Seek will ask for the permissions shown below. Learn more
Goal Seek will need access to your Google account
This will allow Goal Seek to :
See, edit, create, and delete all your Google Sheets spreadsheets
Display and run third-party web content in prompts and sidebars inside Google applications
See your primary Google Account email address
See your personal info, including any personal info you've made publicly available
Reviews
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Gilad Bonjack
January 9, 2025
Really bad. Just doesn't work even in simple testing scenarios
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Pierre-Marie de Haut de Sigy
November 5, 2024
3 seconds computation time, 10 seconds total for a simple 2*x=9 solve. Not acceptable
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Tom Rose
September 26, 2024
I have tried to use this 3 times. I have never been able to get it to work. I get critical errors every time. I'm not trying to do anything complicated. A simple solve, with ony 2 cells involved, normal, positive numbers. Regular numbers. Regular tolerances. This is a horrible app that should be deleted and/or built again from scratch.
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Victor Saidanis
July 6, 2024
The add on is far from perfect. Maybe it works well with simple spreadsheets. On a spreadsheet with complex functions (IF, IFS) with multiple arguments, protected cells and shared with others it performs poorly and unreliably. As if they made it for kids to play around. Really a disappointment!!!!
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Xavier Chauderlot
October 12, 2024
Option greyed out not usable. Quicker to derive the analytic solution with paper and pen than to find an how to guide
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Zanno A
December 17, 2024
i'm losing my mind trying to install this thing. i'm following the instructions exactly to install it on android and it's just not there.
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Dave Treanor
October 12, 2024
Works great! Previous users that rate it poorly apparently didn't read directions. For quicker results, adjust calculation tolerance from default 0.00001 to something greater. Cheers!
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Sonny Leffin
February 4, 2025
Kept getting errors saying I was trying to rename the sheet when I was definitely not doing that
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Conrad Dunkerson
February 12, 2024
Works fine. Very similar to Excel goal seek. Most people are either failing to give the extension permission to access Sheets, not specifying the three components correctly, or some other form(s) of human error. You need to specify a cell with a formula (e.g. "=E7*4"), a cell which is a component of that formula (e.g. "E7"), and a value you want the formula cell to be changed to by adjusting the component cell (e.g. "100"). In the example, E7 should iterate until reaching a value of 25... causing the formula cell to have a value of 100.
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Juan David Guerrero
September 1, 2024
Too slow even for a simple calculation. Once started it just doesn't stop
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