32 calculators · 52 jurisdictions · verified rules

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The calculation itself is free — you can get an answer in the blog widget or any calculator page without an account. Signup unlocks the workflow layer that makes DocketMath a practice tool rather than a one-off lookup.

Save calculations to a matter

Every calculation you run gets attached to a named matter with the client, opposing counsel, and case context. Find any deadline you calculated six months ago in two clicks.

Compare scenarios side-by-side

Run three variations of the same calculation — different discovery dates, different settlement amounts — and see them on one screen. No rerunning, no spreadsheet gymnastics.

AI-explained reasoning

Explain++ generates a citation-backed explanation of why the answer is what it is — ready to drop into a memo, brief, or client email.

PDF export with your letterhead

Export any calculation as a polished PDF with your firm's letterhead, suitable for case files, client communications, or document production.

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Authorities panel — the case law behind the rule

See the statutes and case citations that support every calculation. Pre-validated URLs, layered by jurisdiction (state + federal + court rule).

Pricing tiers

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Every calculation. Every jurisdiction. Zero signup.

32 calculators, all jurisdictions
Verified rules + citations
Inline blog widgets
1 free calc per session without signup

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AI explanations + batch runs + advanced tools.

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Explain++ AI reasoning (credits)
Batch runs across clients
Matter templates
Priority support

All calculators by practice area

Every calculator is jurisdiction-aware with research-verified rules. Click any to open.

Litigation & Damages

Structured Settlement Calculator

Project payout schedules and present-value for structured settlements.

Cost of Delay Modeler

Quantify financial impact of delayed litigation or project.

Offer of Judgment Analyzer

Evaluate strategic impact of offers of judgment and cost shifting.

Treble Damages Calculator

Calculate statutory multiplied damages for various claim types.

Wrongful Death Damages Estimator

Project economic and non-economic damages in wrongful death cases.

Pre/Post-Offer Damages Split

Analyze damages before and after settlement offers for strategic decisions.

Tax Implication Viewer

Model tax consequences of settlements and damage awards.

Statutory Penalties & Fines Calculator

Compute potential fines and penalties across regulatory frameworks.

Impact Calculator

Quantify litigation impact on organizational metrics and KPIs.

Settlement Allocator

Allocate settlement funds via class action distribution or pro rata allocation among claimants.

Interest Calculator

Calculate interest for judgment, late payment, penalty, ERISA, escrow, and security deposits.

Damages Allocation Calculator

Allocate damages among parties using comparative fault or joint & several liability rules.

Interest & Financial

Structured Settlement Calculator

Project payout schedules and present-value for structured settlements.

Closing Date Prorations Calculator

Calculate prorated expenses and credits for real estate closings.

Payment Plan Math

Calculate payment schedules and total costs for installment plans.

Reverse Interest Calculator

Work back from target amount to principal given interest accrual.

Interest Calculator

Calculate interest for judgment, late payment, penalty, ERISA, escrow, and security deposits.

Deadlines & Court Timing

Deadline Calculator

Calculate litigation deadlines including general deadlines, appeals, and trigger explanations.

Statute of Limitations Estimator

Estimate relevant limitation periods based on claim and state.

Small Claims Fee & Limit Calculator

Check filing fees and monetary limits for small claims courts.

Offer of Judgment Analyzer

Evaluate strategic impact of offers of judgment and cost shifting.

Fee Waiver & Indigency Screener

Determine eligibility for court fee waivers across jurisdictions.

Public Records Fee Calculator

Compute costs for public records requests by jurisdiction.

Pro Se Pleading Generator

Create standardized court filings for self-represented litigants.

Employment Law

Wage & Backpay Calculator

Calculate unpaid wages, overtime, and employment discrimination backpay awards.

Overtime Calculator

Calculate overtime pay for any US state. Handles FLSA weekly overtime, California daily overtime and double-time, and state-specific rules.

Real Estate

Closing Date Prorations Calculator

Calculate prorated expenses and credits for real estate closings.

Stamp Duty Calculator (Australia)

Calculate property transfer duty for all Australian states and territories. Covers NSW, VIC, QLD, WA, SA, TAS, ACT, and NT with current rates, first home buyer exemptions, and foreign buyer surcharges.

Closing Cost Calculator

Estimate total closing costs for buying or selling property in any US state. Includes transfer taxes, title insurance, lender fees, recording fees, and prorations with county/city-level accuracy.

Family Law

Child Support & Alimony Calculator

Calculate child support and alimony obligations by state. Uses jurisdiction-specific guidelines, formulas, and income models for all 50 states.

Child Maintenance Calculator (UK)

Calculate child maintenance payments using the official UK CMS formula. Covers basic, reduced, flat, and nil rates with shared care adjustments and other-children deductions.

Attorney Fees & Costs

Attorney Fee Calculator

Calculate attorney fees using lodestar method, contingency arrangements, or fee-shifting comparisons.

Bankruptcy & Debt

Bankruptcy Exemption Checker

Verify available exemptions across federal and state bankruptcy codes.

Business Transactions

Cost of Delay Modeler

Quantify financial impact of delayed litigation or project.

Tax Implication Viewer

Model tax consequences of settlements and damage awards.

Breakup & Fee Clauses Calculator

Analyze transaction termination fees and liquidated damages.

Convertible Note & Cap Table Math

Model ownership dilution scenarios from convertible note financing.

Impact Calculator

Quantify litigation impact on organizational metrics and KPIs.

Uncategorized calculators (0) are in the full catalog at /tools.

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