The fast, reliable way to handle legal math. Save hours, cut errors, get it right—every time.
Get court-ready calculations in seconds. Covers all 50 states and federal rules.
✓
Transparent Calculations: Designed to be clear and easy to verify.
✓
Jurisdiction-Specific Math: Covers all 50 states + federal rules (coverage varies by tool; evidence shown where available).
✓
Court-Ready Outputs: Instant PDF, Word, or CSV with clear formatting for filings.
✓No installation required
✓Clear, reviewable outputs
Judgment Interest Calculator
Principal Amount:
Interest Rate:
Days Elapsed:
Total Amount:
$146,755.14
✓ Calculated per Cal. Code Civ. Proc. § 685.010
How It Works
Get accurate, jurisdiction-specific legal calculations in three simple steps
Select Calculator
Choose from jurisdiction-aware calculators covering everything from judgment interest to court deadlines.
Enter Details
Input your case details with real-time validation and jurisdiction-specific rules automatically applied.
Get Court-Ready Results
Export to PDF, Word, or CSV with detailed explanations, citations, and court-ready formatting.
Spreadsheet Health Check
Upload a spreadsheet and instantly see a clear health report, safe fixes, and which calculators your data is ready for. Scans run in your browser; we only save metadata and results to your workspace.
Free quick scan
Calculator recommendations
Local-first privacy
CSV support • XLSX coming soon
Optional deeper audit available after the scan.
Privacy details
What we collect (metadata + results)
- File name, type (CSV/XLSX), size, and selected sheet name
- Row and column counts, headers, delimiter, and a file fingerprint for deduplication
- Column type inference and limited sample values to explain findings (e.g., first few invalid values)
- Issue summaries (severity, impacted columns, counts) and safe-fix preview examples
- Scan timing, run IDs, and calculator readiness signals
What we never upload
- Full cell contents or entire spreadsheets
- Formulas or macros (XLSX is read as plain values only)
- Files sent to our servers for scanning — analysis happens in your browser
Professional Legal Calculators
Start with our free calculators — no account required. Get instant, accurate results with built-in explanations and jurisdiction-specific rules.
Instant Results
Get calculations in seconds, not hours of manual work
Court Ready
Professional outputs with explanations and citations
Jurisdiction Aware
Automatically applies the correct rules for your jurisdiction
Why DocketMath?
Built for lawyers who care about getting it right the first time
Simple, Transparent Pricing
Choose the plan that fits your practice. Start free, upgrade when you need more.
Pro
$29
per month
For busy practitioners who need advanced calculators and monthly credits.
Everything in Free, plus...
Full library of calculators
150 credits/month (allowance resets monthly)
Explain++ access using credits
Batch/CSV runs using credits
Watermark-free exports
Organize with folders/projects
Share links (view-only)
CSV export for manual integrations
Priority email support
Credit Bundles
Credits are used for premium calculators, Explain++, batch runs, and multi-jurisdiction calculations. Exports do not use credits.