Billable sessions in, invoice-ready decimals out. Add up your tracked time and convert it without a spreadsheet.
Invoices want 6.75 hours; your notes say 6h 45m. That conversion — and adding up a week of scattered sessions — is exactly where billing errors creep in. TCalc sums real durations and flips the total to decimal in one tap.
No project-management suite needed: type your sessions as an expression and bill the result.
Six calls at 45 minutes — multiply instead of adding six times.
Tracked time → invoice decimal, one tap.
Morning session plus afternoon session.
A project phase converted to total billable hours.
Divide the minutes by 60: 6h 45m = 6.75 hours. TCalc does it with one tap on the output format — enter the duration, switch to hours, invoice the number.
Chain them in one expression: 2h 45m + 1h 30m + 45m... TCalc carries minutes into hours correctly, and cloud sync keeps the history on all your devices.
Yes — PRO custom buttons let you define e.g. Call = 45m or Sprint = 2h 30m, so a day of work is a few taps.