Legal Calculators
Alimony Calculator
Illustrate spousal support mechanics using an income-gap formula and marriage-length duration factor, with a table of duration assumptions.
Child Support Calculator
Work through an illustrative income-shares child support calculation based on combined parental income, income share, and number of children.
Contingency Fee Calculator
Calculate the attorney fee and net amount to the client on a contingency-fee settlement, with a reference table across common rate percentages.
Court Filing Fee Calculator
Total a court filing's base fee plus additional line-item fees like service of process and motion fees into one exact filing cost figure.
Legal Fee Calculator
Calculate total attorney fees for hourly or flat-fee billing, including court costs, with a reference table of common hourly rates and hours billed.
Legal Interest Calculator
Calculate post-judgment simple interest accrued on a principal amount using the exact days elapsed between the judgment date and today.
Personal Injury Settlement Calculator
Estimate a personal injury settlement using the multiplier method on medical expenses and lost wages, with a severity multiplier reference table.
Probate Cost Calculator
Estimate probate administration cost using an adjustable percentage-of-estate rate, with a reference table across common estate values and rates.
Small Claims Limit Calculator
Compare a claim amount against a jurisdiction's small claims limit to check eligibility and see the exact headroom or shortfall in dollars.
Statute of Limitations Calculator
Calculate an exact filing deadline from an incident date and limitations period, with calendar-aware year math and optional tolling days.
Legal Numbers That Follow Formulas, Even When Outcomes Don't
Many legal questions feel unpredictable, but several of the underlying calculations actually follow defined formulas or state guidelines — child support calculations typically use a state-specific formula based on both parents' income, and contingency fees follow standard percentage tiers. These calculators work through that structured math, while flagging where a real case still depends on facts a calculator can't capture.
Popular Legal Calculators
Ten tools span family law, litigation costs, and deadlines:
- Child Support Calculator — estimates support obligations using common state guideline formulas based on income and custody arrangement.
- Contingency Fee Calculator — calculates attorney fees as a percentage of settlement or judgment amount.
- Personal Injury Settlement Calculator — estimates a settlement range based on damages, medical costs, and liability factors.
- Statute of Limitations Calculator — estimates the filing deadline for a legal claim based on claim type and jurisdiction.
- Alimony Calculator — estimates spousal support using common formula guidelines based on income and marriage length.
Why Statute of Limitations Deadlines Vary So Much
Statute of limitations periods differ not just by state but by claim type within the same state — a personal injury claim, a contract dispute, and a defamation claim can each carry a different filing deadline in the same jurisdiction, and some claims have a "discovery rule" that starts the clock when the harm was discovered rather than when it occurred. This is exactly why a statute of limitations calculator is a starting estimate rather than a final answer: missing the actual deadline for a specific claim type in a specific state can permanently bar a valid claim, which is a high enough stake that confirming the exact deadline with an attorney is worth doing before relying on any estimate.
Frequently Asked Questions
Do all states use the same child support formula?
No — states use different models (income shares, percentage of income, or Melson formula variants), so the same parental income and custody split can produce different support amounts depending on the state's guidelines.
Is a personal injury settlement calculator's estimate legally binding?
No — it's a rough estimate based on typical settlement patterns; actual settlements depend heavily on liability strength, insurance policy limits, and negotiation, and can differ substantially from a generic estimate.
Explore More
Planning finances around a settlement? See the Finance Calculators, or check workplace-related legal numbers in the Human Resources Calculators.