Billable hours calculator
Paste your time entries. Round each one the way you bill. Get the hours and the invoice total.
How to use it
- Put one entry per line: client or task, then the time, like
Acme: homepage review 1:20. - Open Rate, rounding and currency. Set your hourly rate and pick a rounding rule.
- Optional: enter the total hours you worked this period to see your billable share.
- Download the CSV for your invoice, or copy the total.
How rounding works
Many firms bill in small blocks, not exact minutes.
- 6 minutes (0.1 hour). Common in law and accounting. A 1:20 call becomes 1.4 hours.
- 15 minutes (0.25 hour). Common in consulting and agencies. A 35-minute call becomes 0.75 hours.
The calculator rounds each entry up, then adds them. That is how most billing rules work. Rounding the total instead would give a smaller number.
Billable share: the number to watch
Billable share is billable hours divided by hours worked. If you worked 40 hours and billed 26, your share is 65%.
Most service teams land between 50% and 75%. If yours is lower, look at where the rest went. Revisions, status calls and internal meetings are the usual places.
Where M-Tracker fits
M-Tracker times each task as you work, so the entries are already there at invoice time. It also shows how much time went to redoing work that came back, which is often the biggest unbilled block. No screenshots and no activity tracking.
Try M-Tracker free14-day trial. No credit card. No employee surveillance.
Questions people ask
What does billing in tenths mean?
Each 6 minutes is 0.1 hour. Time is rounded up to the next 6 minutes.
Should I round each entry or the total?
Each entry is standard. Check your contract.
Can I use decimal time?
Yes. Type 1.33 or 1:20. Both work.
Is my client list stored?
No. Everything stays in your browser.
Work you can trust, without redoing it.
Your team gets feedback before work reaches you, or your client.
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