β±οΈ Billable Hours Calculator
Hours you need, utilization you run, rate you earn.
Billable hours needed
Estimates for planning only, not financial advice.
Billable hours are the hours clients pay for, and every revenue target converts to an hours target through your rate. Want $150,000 at $175 an hour? That is 857 billable hours a year, about 19 a week across 45 working weeks. At 70 percent utilization, those 19 billable hours need 27 total working hours a week, a sustainable pace with room for the marketing and admin that keep the pipeline full.
How to Use This Calculator
Use the revenue tab to convert an income goal into weekly billable hours, or the utilization tab to measure what share of your work is actually billable. Both directions expose the same truth: revenue is hours times rate times the discipline to protect both.
Enter your annual revenue target and hourly rate. Use 45 to 48 working weeks, not 52, to leave room for holidays and slow periods.
Read the weekly billable target. Compare it to your real schedule: if the target exceeds 30 a week, raise rates or extend the timeline, because the hours will not appear by wishing.
Use the utilization tab monthly to track leakage. For pricing the rate itself, our freelance rate calculator builds it from your costs and goals.
The Formulas
The effective rate is the sobering one: $150,000 over 27 total hours a week for 45 weeks (1,215 hours) is $123.46 an hour actually earned, not the $175 billed. The gap is non-billable time, and shrinking it, by raising rates, productizing, or cutting admin, is the highest-ROI move in professional services.
Worked Example: $150,000 at $175/Hour
Revenue target: $150,000. Rate: $175. Billable hours needed: 857 a year. Over 45 working weeks: 19.0 billable hours a week. At 70 percent utilization, total working hours are 27.2 a week. Effective hourly rate across all hours: $150,000 / (27.2 x 45) = $122.55.
Reality check: 19 billable hours a week leaves 8 non-billable for marketing, admin, and learning, which is about right for a healthy practice. Push the target to $250,000 at the same rate and the math demands 31.7 billable hours a week, 45 total at 70 percent utilization: a grind. The sustainable fix is the rate: at $250 an hour, $250,000 needs only 22.2 billable hours a week.
Utilization Benchmarks
| Role | Target utilization | Notes |
|---|---|---|
| Agency delivery staff | 75-85% | Below 70% is a pipeline problem |
| Freelancer / consultant | 50-65% | Marketing and admin eat the rest |
| Law / accounting associate | 75-85% | Often 1,800+ annual hour targets |
| Partner / owner | 40-60% | Selling and managing dominate |
Sustained utilization above 90 percent is not excellence; it is unrecorded non-billable time or incoming burnout. Healthy firms protect non-billable hours for training and business development because those hours create next year's billable ones.
Protecting the Hours
Billable targets die from a thousand small leaks: the "quick call" that takes an hour, the revision outside scope, the admin that expands to fill the morning. Defenses that work: time-block client work first and let admin fit around it, not the reverse; scope every engagement in writing with revision limits; batch email and bookkeeping into two weekly windows; and review utilization monthly, not yearly, so a bad quarter gets fixed instead of discovered.
And price from the data: after a month of honest tracking, compute your effective rate and raise billed rates until the effective rate hits your goal. Most freelancers discover they earn 60 to 70 percent of their billed rate across all hours, which means the rate needs to be 1.4 to 1.6 times the target effective rate. Our freelance rate calculator sets the billed rate from your income goal and costs, and the timesheet calculator makes the tracking itself painless.
Utilization Benchmarks by Profession
Targets vary by industry: BigLaw associates aim for 1,800 to 2,200 billable hours, management consultants 1,500 to 1,800, agencies and accounting firms 1,300 to 1,600. The gap between target and the 2,080-hour work year is the non-billable tax: business development, training, admin, and vacation. A firm demanding 1,900 billable hours is demanding roughly 91 percent utilization, which leaves no room for anything but client work and burnout.
Realization rate matters as much as utilization: hours billed mean little if they are written down 20 percent before invoicing. Multiply utilization by realization to get effective yield per available hour; that is the number that pays salaries. For freelancers the benchmark inverts: 60 to 70 percent billable is healthy because the other 30 to 40 percent is sales and admin you cannot delegate. Track both rates monthly, because utilization without realization is vanity and realization without utilization is a hobby.
Estimates for planning only, not financial advice.
Frequently Asked Questions
How many billable hours should I target?
Divide your revenue target by your hourly rate: $150,000 at $175 an hour needs 857 billable hours a year, about 19 a week over 45 working weeks. Most professionals bill 50 to 70 percent of total hours; the rest goes to admin, marketing, and downtime. Set the target from the revenue goal, not from a round number.
What is billable utilization?
Billable hours divided by total hours worked, times 100. A consultant working 40 hours with 28 billable is at 70 percent utilization. Firms typically target 70 to 85 percent for delivery staff; freelancers often run 50 to 65 percent because they also do their own sales and admin.
How many billable hours are in a year?
A full-time employee works about 2,080 hours a year (40 x 52), minus holidays, vacation, and sick time, leaving roughly 1,800 to 1,880 available. At 75 percent utilization, that is 1,350 to 1,410 billable hours. Freelancers should use 45 to 48 working weeks, not 52, or every target will be fantasy.
Billable vs non-billable hours: what counts?
Billable: client work you can invoice, including meetings and revisions within scope. Non-billable: marketing, admin, bookkeeping, learning, and business development. The discipline is recording both honestly; utilization computed on fantasy total hours produces fantasy targets.
How do I raise my billable hours?
In ROI order: raise rates (fewer hours needed per dollar), productize repeat work (templates, checklists), stop discounting scope creep (every free revision is unbilled labor), batch admin into blocks, and fire or reprice the clients who consume the most non-billable time. Tracking for two weeks usually reveals 5-plus hours of leakage.
What is a good utilization rate?
For agencies and firms: 75 to 85 percent for billable staff, with partners lower because they sell. For freelancers: 50 to 65 percent is realistic once marketing and admin are counted. Above 90 percent sustained means burnout or under-recorded non-billable time; below 50 percent means a pipeline or pricing problem.
How do billable hours relate to salary?
Through the billing multiple: firms typically bill staff at 2.5 to 4 times their hourly salary cost. A $70,000 employee ($33.65/hour) billed at $150 an hour carries a 4.5x multiple, covering salary, benefits, overhead, and profit. If your multiple is under 2.5, either rates or utilization must rise.
Should I track time if I charge flat fees?
Yes, even more so. Flat fees hide the effective hourly rate: a $5,000 project taking 40 hours earns $125/hour, but taking 80 hours earns $62.50. Without time tracking, flat-fee work silently becomes low-paid work. Track everything, price from the data.
How many hours per week is full-time billable?
There is no standard, but 30 to 35 billable hours a week is a heavy sustainable load for most knowledge workers; 40 billable means 50-plus total hours once non-billable is added. Anyone promising 40 billable hours weekly year-round is promising burnout or padding.
Billable hours vs the 70/20/10 rule?
Different tools, same discipline: billable hours measure how you earn, 70/20/10 governs how you spend. Connect them by converting the revenue target into hours, then protecting those hours like the budget they fund. Our <a href="/finance/70-20-10-rule-money">70/20/10 calculator</a> handles the spending side.