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Honest math for your money decisions.

Free calculators that show their working. Nothing to sign up for, nothing leaves your browser, and every scenario is a link you can send to someone.

  • No login
  • Runs in your browser
  • Every formula shown
Insurance plan return checker“Pay $50,000 a year for 10 years. Get $50,000 a year for life.”Sounds generous. If you live to 80, the actual return is 6.8% a year.Check a plan

15 more calculators follow a specific country’s tax and benefit rules. They appear when you pick that country’s currency: , , , , , .