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Free Billable Hours Calculator

A free billable hours calculator tracks the hours your agency spends on client work, calculates total revenue per project, and shows your utilisation rate - the key metric that separates profitable agencies from ones that stay busy but struggle to grow. Enter your projects and hours; everything calculates in real time.

Agency billing

Why tracking billable hours matters

Most agency leaders know their total revenue - few know their effective hourly rate, utilisation rate, or which project types are actually profitable. Those three numbers determine whether your agency grows or stalls.

How to calculate billable hours

Getting your billable hours picture clear takes under two minutes with this tool. Here's how to get the most out of it.

1. 1

   Add your projects

   Enter each active project with the client name, hours worked this period, and your billing rate. Pre-filled examples show how to structure the data - edit or delete them to match your actual projects.

2. 2

   Enter total hours worked

   In the Utilisation Rate section, enter the total hours your team worked in the period - including non-billable time. This unlocks your utilisation rate calculation and shows you whether you're in the healthy 65–80% zone.

3. 3

   Review your summary cards

   The four summary cards update in real time: total billable hours, total revenue, average effective rate, and project count. Compare your average rate against your target to spot under-priced projects.

4. 4

   Model team capacity

   Switch to the Team Capacity tab and enter your team size, hours per week, target utilisation, and billing rate. The calculator projects monthly and annual revenue, and shows a bar chart of revenue scenarios from 50% to 90% utilisation so you can see the financial impact of improving efficiency.

5. 5

   Download your summary

   Click Download PDF to get a formatted timesheet summary with all project data, totals, and utilisation rate. Use Copy Summary to paste the data into an email, Slack, or spreadsheet. All calculations happen in your browser - no data ever leaves your device.

Frequently asked questions

What is a billable hour?

A billable hour is any hour of work that can be charged to a client. For agencies, this includes time spent on client deliverables - design, development, strategy, copywriting, account management - but excludes internal meetings, admin, business development, and other non-client work. Tracking billable vs. non-billable time accurately is the foundation of agency financial health.

What is a good utilisation rate for an agency?

The industry standard target is 65–80% utilisation. Below 65% means too much time is going unbilled - often a sign of inefficient project management, poor scope definition, or too much internal overhead. Above 85% is a warning sign: it's unsustainable, leads to team burnout, and leaves no capacity for business development or improving your processes.

How do I calculate billable utilisation?

Utilisation rate = (Total billable hours ÷ Total hours worked) × 100. For example, if your team worked 200 hours in a week and 140 of those were billable, utilisation is 70%. Track this at both the individual and team level. Individual utilisation below 60% often indicates scope creep, poor task allocation, or under-pricing that forces write-offs.

What is the difference between realisation rate and utilisation rate?

Utilisation rate measures how much of your available time is billable. Realisation rate measures how much of your invoiced time you actually collect. For example, 75% utilisation + 90% realisation means your effective rate on total hours is 67.5%. Agencies often have high utilisation but low realisation due to write-offs, scope creep, and discounting. Both metrics matter.

How do I set my hourly billing rate?

Your billing rate should cover your fully-loaded cost per hour (salary, benefits, overhead) plus a target profit margin - typically 20–40% for agencies. A common formula: (Annual salary + overhead allocation) ÷ Billable hours per year = break-even rate. Add your target margin on top. The median digital agency rate in the US is around $125–$175/hr, with strategy and specialist work often commanding $200+/hr.

How many billable hours per person per day is realistic?

A realistic target is 5–6 billable hours per person per 8-hour day. The remaining time goes to internal meetings, admin, professional development, and non-billable client communication. If you're planning capacity at 8 billable hours per day, you will consistently come up short and miss revenue targets. Build the non-billable buffer into your capacity model from the start.

What percentage of agency time is non-billable?

Research by Harvest found that agencies spend roughly 31% of their time on non-billable work - new business, internal projects, admin, and team management. This means a 10-person agency with $150/hr rates loses over $1M/year in theoretical capacity. You can't eliminate non-billable time, but tracking it precisely helps you identify where to reduce it or price it in.

How do I improve my agency's utilisation rate?

The main levers: (1) Tighten project scoping to reduce write-offs. (2) Track time by project in real time - not retrospectively. (3) Move internal meetings to non-billable blocks and protect billable time. (4) Build non-billable overhead into your rates rather than treating it as lost revenue. (5) Review weekly per-person utilisation and address outliers before they become a pattern.

Should I track hours for fixed-price projects?

Yes - absolutely. Even on fixed-price projects, tracking hours lets you calculate your effective rate (total fee ÷ hours spent) and identify which project types are actually profitable. Agencies that don't track hours on fixed-price work routinely discover they're billing $40–60/hr effective rates on work they priced assuming $150/hr. Time tracking on fixed-fee projects is where scope creep becomes visible.

How does this billable hours calculator work?

The Project Tracker tab lets you log each project with hours and rate, then calculates total revenue, average rate, and utilisation (if you enter total hours worked). The Team Capacity tab models your agency's maximum revenue potential across utilisation scenarios - useful for hiring decisions, pricing reviews, and investor conversations. All data is saved locally in your browser; nothing leaves your device.

Can I export my hours calculation as a PDF?

Yes. The Project Tracker tab includes a Download PDF button that generates a formatted timesheet summary PDF with all your project data, totals, and utilisation rate. The PDF is generated client-side - no data is sent to a server. You can also use the Copy Summary button to paste a text version into a spreadsheet, email, or Slack.