Rex says
Everyday utility math — the kind you'd otherwise pull up four browser tabs for. I keep it to one clean answer.
Try a scenario
Click to load — tweak from there.Inputs
Result
Utilization
53.3%
Effective hourly (all hours)
$58.67
Weekly revenue
$2,640
Psst — share this and help Rex grow
One click, a permanent link with your numbers baked in.
How to use this
- 1Enter hours worked per week.
- 2Enter hours billed per week.
- 3Enter hourly rate ($).
- 4Read your utilization on the right — it updates as you type.
- 5Hit Share to keep the scenario or send it to someone.
About this calculator
Utilization is the hidden lever on freelance income: unbilled admin, sales and rework quietly cut your effective rate. See the real number and what each billable hour is worth.
Worked example
Using the values the calculator loads with:
Inputs
- Hours worked per week: 45
- Hours billed per week: 24
- Hourly rate: 110 $
Results
- Utilization: 53.3%
- Effective hourly (all hours): $58.67
- Weekly revenue: $2,640
What each field means
Inputs
- Hours worked per week
- The hours worked per week used in the calculation. Starts at 45 so you have a working example on load.
- Hours billed per week
- The hours billed per week used in the calculation. Starts at 24 so you have a working example on load.
- Hourly rate ($)
- The hourly rate used in the calculation, measured in $. Starts at 110 $ so you have a working example on load.
Results
- Utilization
- Returned as a percentage and shown as the headline result. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Effective hourly (all hours)
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Weekly revenue
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
FAQ
How does the freelance utilization rate calculator work?
Utilization is the hidden lever on freelance income: unbilled admin, sales and rework quietly cut your effective rate. See the real number and what each billable hour is worth. The underlying maths is: Utilization = billed hours ÷ worked hours. Effective rate = revenue ÷ worked hours.
What do I need to enter?
3 values: hours worked per week, hours billed per week, and hourly rate. Each field starts with a sensible default, so you can change one number at a time and watch the result move.
What does the utilization result mean?
It is returned as a percentage and updates live as you edit the inputs, so you can compare two or three versions of a scenario in a few seconds.
Is this calculator free, and do I need an account?
Yes, it's free, and no account is required. Nothing you type is stored on our servers — the maths runs entirely in your browser.
How accurate is the result?
It applies the standard formula exactly, so the arithmetic is precise. Estimates assume standard, average conditions — local rules, pricing, and materials vary.
Who is this tool for?
It's built for anyone doing everyday planning maths — a quick estimate that would otherwise need four browser tabs and a calculator app.
Accuracy and limitations
- Estimates assume standard, average conditions — local rules, pricing, and materials vary.
- Results are rounded for readability; add a buffer before ordering, booking, or committing.
- Double-check anything with a real cost attached against a local quote.
Related tools
Cite this calculator
Writing about this topic? Grab a citation — every link helps keep these tools free.
RevenueLab. (2026). Freelance Utilization Rate Calculator. Retrieved from https://www.revenuelab.fyi/toolbox/freelance-utilization-rate
<p>Source: <a href="https://www.revenuelab.fyi/toolbox/freelance-utilization-rate" target="_blank" rel="noopener">Freelance Utilization Rate Calculator — RevenueLab</a> (2026).</p>
Source: [Freelance Utilization Rate Calculator — RevenueLab](https://www.revenuelab.fyi/toolbox/freelance-utilization-rate) (2026).