Career Planning Tool

Chargeable Hours Calculator

Track utilization and true billable capacity easily. Measure overhead, leave, breaks, targets, and revenue impact. Make smarter staffing plans for sustainable career growth today.

Calculate Your Chargeable Hours

Enter your working pattern, paid time off, overhead, target utilization, realization rate, and hourly rate to estimate realistic chargeable capacity.

Working days per week

Hours per day

Working weeks per year

Break minutes per day

Admin hours per week

Meeting hours per week

Training hours per month

Leave days per year

Public holidays per year

Sick days per year

Overtime hours per week

Utilization target (%)

Realization rate (%)

Hourly rate

Reset

Example Data Table

Scenario	Days/Week	Hours/Day	Net Available Hours	Chargeable Hours	Revenue at Rate
Consultant Baseline	5	8	1,473.00	1,049.14	$62,948.40
Freelancer High Utilization	5	7.5	1,388.00	1,094.13	$82,059.75
Agency Manager Mixed Load	5	8.5	1,522.50	954.61	$76,368.80

These examples illustrate how leave, overhead, utilization, and rate assumptions can change your chargeable capacity and earnings outlook.

Formula Used

The calculator converts your schedule into realistic billable capacity through four stages:

Annual workdays = working days per week × working weeks per year
Gross scheduled hours = (annual workdays × hours per day) + overtime hours
Net available hours = gross hours − leave − breaks − weekly overhead − monthly overhead
Target billable hours = net available hours × utilization target
Chargeable hours = target billable hours × realization rate
Estimated revenue = chargeable hours × hourly rate

Utilization measures how much available time you aim to spend on client work. Realization adjusts for write-offs, discounts, or unrecovered hours.

How to Use This Calculator

Enter your weekly schedule and average daily hours.
Add breaks, administration, meetings, and training time.
Include leave, holidays, and likely sick days.
Set a utilization target that fits your role.
Enter a realization rate to reflect write-offs.
Add your hourly rate for revenue forecasting.
Press the calculate button to show results above the form.
Review gaps, then export the output as CSV or PDF.

Frequently Asked Questions

1. What are chargeable hours?

Chargeable hours are work hours you can bill directly to a client, employer, or project. They exclude internal meetings, administration, training, breaks, leave, and other non-client duties.

2. Why should I track utilization separately?

Utilization shows how much of your available time is planned for client work. It helps you set realistic goals, compare roles, and avoid overestimating yearly billable capacity.

3. What does realization rate mean?

Realization rate is the share of targeted billable hours that actually become chargeable after discounts, write-offs, scope issues, or unbilled effort. It makes forecasts more realistic.

4. Should breaks count as chargeable time?

Usually no. Breaks reduce productive availability, so they should be removed before calculating chargeable capacity. This gives a truer picture of what you can reasonably bill.

5. Can freelancers use this calculator?

Yes. Freelancers can model admin time, prospecting, unpaid revisions, training, and leave. This helps estimate sustainable client loads and revenue without assuming every hour is billable.

6. How is lost revenue opportunity calculated?

Lost revenue opportunity equals non-chargeable available hours multiplied by your hourly rate. It highlights the earning value of unused capacity or time lost to overhead and write-offs.

7. Is a higher utilization target always better?

Not always. Very high utilization can increase stress, lower quality, reduce learning time, and limit business development. Sustainable targets usually balance delivery, growth, and recovery time.

8. Can managers use this for staffing plans?

Yes. Managers can compare expected availability, billable capacity, and recovery rates across roles. That supports hiring plans, pricing decisions, and healthier workload distribution.