For a rough estimate of how much tax, you'll pay on the gain, try this tool https://turbotax.intuit.com/tax-tools/calculators/taxcaster/?s=1. Enter your regular income first to see the regular tax. Then add the sale to see the effect.
Enter the difference between the sale price and what you paid for it originally as Gains/Losses (long-term) (long term capital gain [LTCG]). Depending on how much total income you have LTCG are partially taxed at 0%, 15%, 20% and/or 23.8%.
