Billable Hours Calculator
Estimate realistic annual billable capacity after leave, admin, and sales work.
Annual billable hours
Based on the values entered
Average per month101.8
Non-billable hours658
Total available hours1,880
How to use it
A useful estimate starts with honest inputs
Not every working hour is billable. Plan capacity around the time your business actually needs.
Enter your figures
Use realistic values from your own work and records.
Review the estimate
Read the supporting breakdown, not only the headline.
Adjust your assumptions
Test a conservative and an optimistic scenario.
Methodology
How the calculation works
Working weeks and weekly hours establish scheduled capacity. Optional weekday public holidays are removed before the billable utilization percentage is applied.
Practical example
Putting the estimate in context
At 40 hours a week, five weeks off, and 65% billable utilization, scheduled capacity becomes a smaller and more realistic billable-hours target.
Formula
Billable capacity
(Available working hours - holiday hours) × billable utilization
Use tracked history when possible. Avoid counting leave and holidays twice.
Common mistakes
- Assuming every hour at the desk is billable.
- Not defining billable meeting or revision time.
- Using utilization targets that ignore sales and admin reality.
Better inputs
Tips for a more useful result
- Track utilization monthly.
- Leave room for sales, administration, and learning.
- Avoid counting public holidays again if they are already included in time off.
Learn the context
Related guides
Operations
What Are Billable Hours?
Understand billable hours, non-billable work, utilization, annual capacity, and how these numbers affect freelance income and pricing.
13 min read · Updated 2026-06-22Read guide
Freelance rates
How to Calculate Your Freelance Hourly Rate
A step-by-step method for turning income goals, expenses, tax planning, vacation time, and billable hours into a practical freelance hourly rate.
14 min read · Updated 2026-06-22Read guide
Common questions
About this calculator
Is the billable hours calculator free?
Yes. It is free to use, requires no account, and your entries stay in your browser.
How accurate is this estimate?
The result is a planning estimate based on the values you provide. Taxes, local rules, and individual circumstances can change the real outcome.
Does FreelanceToolKit store my financial data?
No. This calculator runs in your browser and does not send your entries to a server.
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