🚨 Stop Losing Money to Spreadsheet Errors

The fast, reliable way to handle legal math. Save hours, cut errors, get it rightβ€”every time.

Get court-ready calculations in seconds. Trusted by 500+ attorneys. Covers all 50 states and federal rules.

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Attorney-Tested Accuracy: Trusted by 500+ attorneys. Every calculator is reviewed and validated.

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Jurisdiction-Specific Math: Covers all 50 states + federal rules. Always up-to-date with current laws.

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Court-Ready Outputs: Instant PDF, Word, or CSV with clear formatting for filings.

βœ“No installation required

βœ“SOC 2 compliant

Live Preview

Judgment Interest Calculator

Principal Amount:

Interest Rate:

Days Elapsed:

Total Amount:

$146,755.14

βœ“ Calculated per Cal. Code Civ. Proc. Β§ 685.010

⚑ Instant Results
πŸ“‹ Copy to Motion

Trusted by attorneys across all practice areas

See what legal professionals are saying about our calculators

"

DocketMath saved me hours of calculation time on a complex judgment interest case. The results were precise and court-ready.

Commercial Litigation Attorney

"

I rely on the deadline calculator for all my cases. It's accurate across jurisdictions and has never let me down.

Trial Attorney, 15+ years

"

The attorney fee calculator helped me justify my rates to the court with jurisdiction-specific data. Invaluable tool.

Civil Rights Litigator

"

Used for a class action settlement distribution. The calculations were precise and saved me from spreadsheet errors.

Class Action Specialist

"

Calculations that would take hours manually are done in seconds. The time savings alone is worth every penny.

Family Law Practitioner

"

The security deposit interest calculator helped me win a tenant rights case that hinged on precise calculations.

Housing Rights Attorney

"

Court-ready outputs that judges accept without question. The PDF reports are professional and clearly formatted.

Appellate Attorney

"

I've used the statute of limitations estimator in over 30 cases. It's saved me from potentially costly mistakes.

Personal Injury Lawyer

"

The late payment interest calculator helped us recover an additional $15,000 for our client that would have been missed.

Corporate Attorney

"

Jurisdiction-specific calculations that update automatically when laws change. No more worrying about outdated formulas.

Multi-State Practice Attorney

"

The fee waiver calculator helped me quickly determine eligibility for pro bono clients. Streamlined our intake process.

Legal Aid Attorney

"

Used the backpay interest calculator in a Title VII case and recovered 20% more for our client than initially estimated.

Employment Law Attorney

"

The penalty interest calculator helped us negotiate a better settlement by clearly demonstrating the accruing costs.

Negotiation Specialist

"

DocketMath's calculations have never been successfully challenged in court. That reliability is priceless.

Litigation Partner

"

The appeal deadline calculator saved me from missing a critical filing date in a complex multi-jurisdiction case.

Appellate Specialist

"

Used the statutory penalties calculator to accurately assess potential damages. Client was impressed with the detailed analysis.

Regulatory Compliance Attorney

How It Works

Get accurate, jurisdiction-specific legal calculations in three simple steps

1

Select Calculator

Choose from 40+ jurisdiction-aware calculators covering everything from judgment interest to court deadlines.

2

Enter Details

Input your case details with real-time validation and jurisdiction-specific rules automatically applied.

3

Get Court-Ready Results

Export to PDF, Word, or CSV with detailed explanations, citations, and court-ready formatting.

Professional Legal Calculators

Start with our free calculators β€” no account required. Get instant, accurate results with built-in explanations and jurisdiction-specific rules.

Deadline Calculator

Free

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

No account required

Structured Settlement Calculator

Free

Project payout schedules and present-value for structured settlements.

No account required

Statute of Limitations Estimator

Free

Estimate relevant limitation periods based on claim and state.

No account required

Small Claims Fee/Limit Calculator

Free

Check filing fees and monetary limits for small claims courts.

No account required

Closing Date Prorations Calculator

Free

Calculate prorated expenses and credits for real estate closings.

No account required

Payment Plan Math

Free

Calculate payment schedules and total costs for installment plans.

No account required

Attorney Fee Calculator

Free

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

No account required

Interest Calculator

Free

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

No account required

Damages Allocation Calculator

Free

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

No account required

⚑

Instant Results

Get calculations in seconds, not hours of manual work

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Court Ready

Professional outputs with explanations and citations

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Jurisdiction Aware

Automatically applies the correct rules for your jurisdiction

Why DocketMath?

Built for lawyers who care about getting it right the first time

Accuracy & Trust

Attorney-tested, court-proven calculations. Trusted by 500+ legal professionals across all practice areas.

Save Time

Hours of manual work reduced to seconds. Focus on winning cases, not wrestling with spreadsheets.

Court-Ready Exports

PDF, Word, and CSV exports with detailed explanations, citations, and professional formatting.

Always Current

Jurisdiction rules update automatically as laws change. All 50 states plus federal rules covered.

Simple, Transparent Pricing

Choose the plan that fits your practice. Start free, upgrade when you need more.

Free

$0

forever

Perfect for occasional calculations

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Basic free calculators

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Premium calculators via token bundles

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Watermarked exports

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Basic "Explain This" (non-LLM)

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No token rollover

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Community support

Most Popular

Pro

$29

per month

For busy practitioners and small firms

βœ“

All calculators

βœ“

150 tokens/month + 90-day rollover

βœ“

Explain++ (tokenized)

βœ“

Batch/CSV runs (tokenized)

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Watermark-free exports

βœ“

Basic folders/projects

βœ“

Share link (view-only)

βœ“

CSV export (manual integration)

βœ“

Priority email support

Unlimited

$149

per month

No tokens. No limits.

βœ“

Unlimited calculators & Explain++

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Batch & background jobs

βœ“

Editable export templates + branded exports

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Nested folders & tagging

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Shareable collaborative workspaces

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Integrations (Clio, Zapier/Make, PracticePanther)

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Priority compute & concierge support

Token Bundles

Tokens are used for premium calculators, Explain++, batch runs, and multi-jurisdiction calculations. Exports do not use tokens.

TokensPricePer TokenApprox. Runs

25

$10

$0.40

~15

100

$25

$0.25

~62

250

BEST VALUE

$55

$0.22

~155

500

$100

$0.20

~310

1000

$180

$0.18

~625

* Average calculation uses ~1.6 tokens (base + context + jurisdiction premiums)

All plans include a 14-day free trial. No credit card required.

Exports do not use tokens. β€’ Pro token rollover: 90 days. β€’ Unlimited removes token usage and counters in the UI.

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Secure

Bank-level encryption

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Compliant

GDPR & SOC2

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Reliable

99.9% uptime