The IRS tool linked is used to update your w-4 if you have an employer. You can include the amounts of your other income along with your job earnings to generate a new w-4 which will tell your employer to withhold enough taxes to cover your w-2 income + the additional income you enter on the screen. See Pub 505 for info on estimated tax and withholding tax payments.
If you don't have an employer and want to generate federal estimated payment amounts, you can do that in TurboTax.
Estimate next year's federal taxes
Estimate next year's state taxes
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