Freelance Finance
Billable Hours Calculator
Estimate how many hours you can realistically invoice after admin, sales, meetings, training, holidays, and sick time.
Annual billable hours
1,032.0
57.3% current utilization.
- Available annual working hours
- 1,800.0
- Annual non-billable hours
- 768.0
- Monthly billable hours
- 86.0
- Weekly billable hours
- 21.5
- Target billable hours
- 1,350.0
- Additional hours required
- 318.0
How to use this calculator
Enter your total weekly work capacity, then subtract recurring non-billable categories. Add time off so the annual estimate reflects how you actually work, not a perfect 52-week schedule.
Methodology
The calculation annualizes your available work hours, subtracts recurring non-billable hours, and compares the remaining billable capacity with your utilization target.
Formula
available_hours = weekly_hours * working_weeks - time_off_hours
billable_hours = available_hours - annual_non_billable_hours
utilization = billable_hours / available_hoursExample
A 40-hour week with 16 non-billable hours and four vacation weeks leaves about 1,122 annual billable hours after sick days and public holidays.
Important considerations
Utilization is a planning signal, not a moral score. High-value specialists often protect time for sales, learning, documentation, and client communication.
FAQs
Can non-billable time be zero?
You can model it, but most independent workers need at least some internal time each week.
What should I do if utilization is too low?
Look for repeatable admin tasks, meeting hygiene, better lead qualification, or packaged offers before simply working longer hours.
Related tools
Freelance Rate Calculator, Project Pricing Calculator, Contractor Day Rate Calculator, and Freelance Invoice Generator.
Disclaimer
Results are estimates for planning and are not financial, tax, employment, or legal advice.