Track billable hours percentage to maximize revenue and identify time waste
This calculator helps you measure what percentage of your working time generates revenue. Track billable vs unbillable hours to optimize your schedule and understand your true productivity.
How to use this calculator
Track all hours you worked this week including evenings and weekends. Count only hours you can invoice to clients as billable hours. Enter your standard hourly rate. The calculator shows your utilization rate (percentage of time that's billable), actual revenue generated, and opportunity cost of unbillable work.
How utilization rate is calculated
Utilization rate is your billable hours divided by total working hours. Higher percentages mean more of your time generates revenue.
Utilization Rate = (Billable Hours / Total Working Hours) × 100Frequently asked questions
What's a good utilization rate for freelancers?
60-75% is healthy for established freelancers. This leaves time for admin, business development, and professional growth. New freelancers often start at 40-50% while building their client base. Agencies typically target 70-85% for delivery staff since admin is handled separately.
How do I track billable vs unbillable hours accurately?
Use time tracking software like Toggl, Harvest, or Clockify. Create categories for billable client work and unbillable tasks (admin, sales, learning). Review your tracked time weekly to spot patterns and inefficiencies. Honest tracking is crucial — it reveals where time actually goes.
Can I improve utilization by working more hours?
No. Working 60 hours with 25 billable hours is 42% utilization — worse than 40 hours with 25 billable (63%). Improve utilization by reducing unbillable work, not adding more total hours. Automate admin, use templates, decline low-value meetings, and batch similar tasks.
Should all my time be billable?
No. 100% utilization means you're not investing in growth, skills, or finding new clients. You need unbillable time for proposals, marketing, networking, learning, and improving systems. The goal is sustainable high utilization, not maximum utilization that leads to burnout or stagnation.
What if my utilization rate is too low?
Below 50% means you're spending too much time on unbillable work. Audit where time goes — is it excessive admin that could be automated? Too many proposals for work you don't win? Time spent on non-ideal clients? Poor project scoping that creates extra communication? Fix the biggest time drains first.