Calculate compound interest and future balances across high-yield savings accounts.

Calculate total price with sales tax or extract the net amount and tax portion from a gross total price with custom tax rates.

Convert salary between hourly, daily, weekly, bi-weekly, monthly, and annual. Factor in work hours, vacation days, and taxes. Free online salary calculator.

Calculate your net take-home salary after federal, state, and FICA payroll taxes. Free salary tax calculator with 2026 brackets, 401k, and deduction breakdowns.

Calculate how fast money doubles with the Rule of 72, 114 (triple), and 144 (quadruple) versus exact logarithms.

Calculate return on investment with our free ROI calculator. Enter investment cost and returns to see ROI percentage, net profit, and annualized returns.

Calculate trading R:R ratios, dollar risk vs reward, and minimum breakeven win rate.

Audit account capital exposure, consecutive loss danger, and optimal Kelly Criterion sizing.

Simulate portfolio drawdown strategies and longevity over 30+ years with inflation and market returns.

Project total retirement income from investments, pensions, Social Security, and annuities against living expenses.