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FBM Calculators

Freelance calculators

Billable Hours Calculator

Separate billable time from total hours and calculate utilization. Your inputs stay in this browser.

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Results update automatically as you edit.

Result

Billable hours

28

Utilization rate

70%

What this calculator measures

Billable hours remove administrative and other non-client time from total hours; utilization expresses the billable share.

Formula

Billable = Total - Non-Billable; Utilization % = Billable / Total x 100

Inputs and variables

Total hours worked
Enter the value used by this formula.
Non-billable hours
Enter the value used by this formula.

How to use the calculator

  1. Choose a display currency when money fields are present.
  2. Enter values that cover the same period, scope, and currency.
  3. Review the result, formula, and worked example before using the estimate in a decision.
  4. Change one assumption at a time to understand what drives the result.

Worked example

  1. 1A 40-hour week contains 12 non-billable hours.
  2. 228 hours are billable and utilization is 70%.

How to interpret the result

Higher utilization is not automatically healthier if sales, administration, and recovery time are neglected.

Common mistakes and limits

  • Counting unapproved time as billable, omitting internal meetings, or setting non-billable hours above total hours.

Frequently asked questions

Are breaks billable?

Follow the contract and local employment rules.

What is a good utilization rate?

It depends on role, seniority, and required sales or management work.

Why must total hours exceed zero?

Utilization needs a nonzero denominator.

Last reviewed: July 28, 2026

Published by FBM Calculators Hub

Results are estimates based on your inputs and assumptions. They are not financial, tax, legal, accounting, employment, or investment advice. Verify important decisions with an appropriately qualified professional.

Read the calculation methodology or report a correction.