Free calculators for law firms
Practical tools to understand your firm's economics — no signup, no email required. Everything runs in your browser.
Matter Profitability Calculator
See whether a matter actually makes money — margin, profit, effective rate, and true cost per hour.
Billable Hours Calculator
Project daily, monthly, and annual billable revenue, plus a 6-minute billing increment chart.
Court Day Calculator
Count a number of court days forward or backward from a trigger date, skipping weekends and federal holidays.
CC Fee Reimbursement Calculator
Find what to bill so a card-processing fee is fully covered, or back into the fee from a total already charged.
More tools coming — realization & utilization, hourly rate, and law-firm P&L templates.
The benchmarks these calculators measure against
Each calculator asks for your firm's numbers. These are the published averages to compare them with.
| Metric | Average | What it measures |
|---|---|---|
| Utilization rate | 38% | Share of the working day that is billable |
| Realization rate | 88% | Share of billable hours actually invoiced |
| Collection rate | 93% | Share of invoiced hours actually paid |
| Billable hours captured | 3.0 | Hours per 8-hour working day |
Frequently asked questions
Are these calculators free to use?
Yes. Every calculator runs in the browser, needs no account, and no email address is required to see a result.
Does my data get sent anywhere?
No. The calculations run entirely in your browser. The figures you enter are not transmitted to a server or stored.
Which calculator should a firm start with?
Start with the one that matches your open question. Use the matter profitability calculator to find out whether a matter type makes money, the billable hours calculator to see what capture rate is worth in revenue, and the court day calculator when a deadline depends on counting court days.
How accurate is the court day calculator?
It applies the counting rules and holiday calendar for the jurisdiction you select. Treat the result as a working date to confirm against the governing rule and the court's own calendar, not as legal advice.
Can we use these results in a client proposal?
The output is your own figures, so you are free to use it. Cite Clio's Legal Trends Report rather than The Hammer Lex if you also quote the benchmark averages above.
Like the math? Automate it.
The Hammer Lex turns daily time entry into live billing and profitability across every matter, client, and timekeeper.
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