This is a good tool. Make sure you account for a possible 10% penalty if you are under 59-1/2.

https://turbotax.intuit.com/tax-tools/calculators/taxcaster/

Also, here's a "chart" (attached below) that you may have been referring to. It's the tax rate schedules from the IRS. Look up your income according to your filing status -- a little cumbersome and sometimes confusing.

Please feel free to post any additional details or questions in the comment section.