I'd be glad to provide the link you need, Hailu.
To assist you effectively, could you please share more details about your concern? Are you seeking a resource that explains everything about Working Capital, or do you just need a direct link to the calculator?
In the meantime, if you're looking for the article that explains the definition of Net Working Capital, its formula used for calculations, and other necessary information, check this out: Net Working Capital.
If you'd like to directly perform your calculations, explore this resource: Working Capital Calculator.
Lastly, I've included this helpful guide to assist you in gaining a financial snapshot of your business: Run a Balance Sheet report in QuickBooks Online.
You can also check our team at QuickBooks Live Expert Assisted to help you with the best practices and guidance on getting the most out of QuickBooks Online.
Don't hesitate to post here in the Community if you have further questions about managing Working Capital. We look forward to helping you further.