Free · No signup · All U.S. states

Legal calculators built on state guidelines.

Free calculators for child support, overtime, alimony, and 24 more — every formula cites its statute.

  • Based on state statutes
  • Updated 2026
  • No attorney needed to start

Child support hubAll U.S. states — find yours →

27 tools. Every state.

Select a calculator, pick your state, get your estimate.

TheLegalCalc uses state guideline models — not generic national averages — to generate planning estimates you can cross-check against official sources. Each tool documents its legal basis where available. Laws change; verify current rules for your state. No attorney required for a starting number.

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Common questions answered.

Yes, completely. TheLegalCalc is 100% free to use with no account, no signup, and no hidden fees. We are supported by advertising, not by charging users.

Our calculators apply each state's guideline model — Income Shares, Percentage of Income, or Melson Formula — based on publicly available state statutes. Results are planning estimates. For a court-certified calculation, use your state's official calculator.

No. We do not store, collect, or transmit any of your inputs. Every calculation runs entirely in your browser. When you close the page, the data is gone.

All U.S. states. Every calculator on TheLegalCalc is tailored to your state's specific laws, limits, and models. Select your state from any calculator or browse the full list at our By State page.

No. TheLegalCalc results are estimates for informational purposes only and do not constitute legal advice. Courts use more detailed financial information and judge discretion. Always work with a licensed attorney for actual legal proceedings.

Calculators and articles are reviewed when state law changes and at least annually. Confirmed errors are corrected within 2 business days of being reported. If you notice an error or a law has changed, please contact us.

TheLegalCalc provides general legal information for educational purposes only. Results are estimates and do not constitute legal advice. Laws change frequently and vary by jurisdiction. Always consult a licensed attorney in your state before making any legal decisions.

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