Billable hours & rounding calculator

Quickly convert your jobsite durations into clean, professional billable totals without the manual math.

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<p style="font-size:0.85em;">Free <a href="https://tradestimer.com/tools/billable-hours-rounding-calculator">Billable hours & rounding calculator</a> by TradesTimer.</p>

The importance of consistent rounding

For solo tradespeople, billing in irregular increments (like 17 or 43 minutes) can look unprofessional and lead to payment disputes. Using a consistent rounding rule—such as rounding to the nearest 15-minute block—ensures your invoices are easy for clients to read and understand.

Apply your agreed rounding policy

Small gaps in billing add up over a week. By applying a standard rounding method to every stop, you ensure that the administrative overhead and small setup tasks at each jobsite are accounted for in your total billable time.

FAQ

Does this tool calculate my mileage?

No, this specific calculator is for labor hours only. Use the TradesTimer app to automatically log your trip distances for tax season.

What is a standard rounding increment?

Many professionals use 15-minute (0.25 hour) or 30-minute (0.5 hour) increments to keep billing simple and predictable.

Related

• TradesTimer for electricians
• TradesTimer for plumbers
• How should I round billable hours fairly?
• How many hours can I honestly bill a client?

Last updated 2026-06-08. Estimates only — not tax or accounting advice.