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Billable hours calculator

Calculate your utilization rate from billable and total hours, compare it with a target, and see billable revenue and the revenue gap at your hourly rate.

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How to use

  1. Enter billable hours and total hours worked for the period.
  2. Enter your target utilization and, optionally, your billing rate.
  3. Read utilization, the hours needed to hit the target, and revenue figures.

Worked example: 28 billable of 40

Utilization = 28 ÷ 40 × 100 = 70%. A 75% target on 40 hours is 30 billable hours, so the gap is 2 hours.

At $150.00 per hour the 28 hours bill $4,200.00 and the 2-hour gap is $300.00 of revenue left on the table this week.

Frequently asked questions

What is utilization?

Billable hours ÷ total hours worked × 100.

What is a good target?

Agencies often aim for 70 to 80%; law firms count against a 1,800 to 2,000-hour annual target. Use your own.

Does it include non-billable work?

Non-billable hours are total minus billable and are shown in the result.

How is the revenue gap computed?

(Target billable hours − actual billable hours) × rate, never negative.

Can I use it for a year?

Yes, enter annual figures; the math is the same.

Can I export?

CSV, Excel or copy.