Billable Hours Calculator
Hours and rates per client, line totals, and the invoice number you actually need.
| Client or task | Hours | Rate ($/h) | Amount | |
|---|---|---|---|---|
| $0.00 |
Everything stays in your browser. Copy the summary into an invoice, an email, or your time-tracking system.
Invoice day. Six clients, three different rates, a notes app full of entries like "Tues site fixes 2ish hrs", and a growing suspicion you undercharge.
Lay it out here instead. One line per client or task, hours times rate, totals done as you type. The utilization check at the bottom is the quiet truth-teller: enter everything you worked this period, billable or not, and see what share of your time actually earned. That number decides rates better than any gut feeling.
Copy the summary straight into your invoice or email. Your lines stay saved in your browser for next time.
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Questions
How are billable hours calculated?
Each line multiplies hours by that client's rate, and the lines sum into your invoice total. Enter hours as decimals, so 90 minutes is 1.5. Set a default rate once and new lines inherit it.
What is a good utilization rate?
Utilization is billable hours divided by total hours worked. Many freelancers and agencies land between 60 and 80 percent, since admin, sales, and email eat the rest. Enter your total worked hours below the table and the calculator shows your percentage.
Can I bill different clients at different rates?
Yes. Every line has its own rate, so one calculator can hold a retainer client at one rate, a rush job at another, and that legacy client you keep meaning to reprice.