Free Billable Hours Calculator

Calculate billable revenue, utilization and a freelance hourly rate

This calculator covers three connected jobs without creating thin duplicate pages: measuring a completed billing period, planning a sustainable freelance rate and converting minutes into an agreed billing increment. Switch modes at the top; each result updates immediately in your browser.

The default period example uses 40 tracked hours, 30 billable hours and a $100 hourly rate. That produces $3,000 billable revenue and 75% utilization. Replace every example with genuine records and the rate actually agreed with the client.

Billable hours versus total tracked hours

Billable hours are the time you are entitled to charge to a client under the applicable agreement. Total tracked hours may also include administration, sales, training, internal meetings and other non-billable work. The calculator uses this formula:

billable utilization = billable hours ÷ total tracked hours × 100

Utilization is an operating measure, not a target that should override accurate time records. DraftFort caps entered billable hours at total tracked hours so an accidental reversal cannot inflate the result.

Plan a freelance hourly rate from capacity

The rate planner starts with the annual personal income and business costs you enter. It applies an optional reserve or profit buffer, then divides the revenue target by planned billable capacity:

hourly rate = (income + business costs) × (1 + reserve %) ÷ annual billable hours

Billable capacity is billable hours per week × working weeks per year. This is why dividing a desired salary by 2,080 hours often understates a freelancer’s required rate: not every working hour is billable, and independent work may need to fund equipment, software, insurance, leave, payment fees and uncollected invoices. Taxes and benefits are not estimated here; add the real amounts that apply to your situation.

Six-minute and other billing increments

Some professionals record time in decimal-hour increments. Six minutes equals 0.1 hour, 15 minutes equals 0.25 hour and 30 minutes equals 0.5 hour. The entry converter supports exact time plus 6, 10, 15 and 30-minute increments.

Rounding each entry can produce a different total than rounding once after adding the day’s minutes. Follow the actual client agreement and billing policy, retain source time records, and never use rounding to misrepresent work.

From time record to invoice

Use the hours calculator when your source record is a start/end interval, an overnight shift or several periods that need exact break deductions and a reviewable time total.

Use the free timesheet template to record dates, projects, tasks and genuine hours. When the work is ready to bill, move the approved description, quantity and rate into the invoice generator. The invoice due date calculator can then translate the agreed Net term into a calendar date.