About TCalc.it

TCalc.it was born from a simple frustration: why is calculating time so hard? Whether you're a video editor adding up clip durations, a project manager tracking sprint hours, or a pilot logging flight time — every existing tool made you convert to decimals, do the math, then convert back. We built TCalc.it so you never have to.

To give everyone a calculator that actually understands time. Hours, minutes, seconds, days, weeks — TCalc.it handles the arithmetic natively, so you can focus on your work instead of the math.

• →A calculator that adds, subtracts, multiplies and divides durations in natural time notation (e.g. 2h 30m + 1h 45m = 4h 15m).
• →Customisable layouts with shortcut keys tailored to your workflow — whether you track billable hours, edit video, or schedule shifts.
• →Cloud sync so your layouts and history follow you across every device.
• →A native Android app, and a fast web app at tcalc.it.

TCalc.it is used daily by professionals who work with time as a core part of their job:

• →Video editors — summing clip and sequence durations.
• →Freelancers — calculating billable hours across multiple clients.
• →Pilots & dispatchers — logging and totalling flight hours.
• →HR & payroll teams — totalling shift durations and overtime.
• →Developers & project managers — estimating and tracking sprint capacity.

TCalc.it is built and maintained by AsioSoft, an independent software studio. It is a self-funded product with no VC-funded growth team behind it — just the belief that a problem this common deserved a proper tool rather than another decimal converter.

That independence shapes the product. There is no advertising business model to protect, so the free tier is genuinely usable rather than a trial in disguise, and the one-time Pro purchase is what funds continued development. Feature requests from people who actually use the calculator carry more weight here than a roadmap written a year in advance — the to operator, for instance, exists because users asked for it after launch.

Questions, bug reports and feature requests all reach us at info@tcalc.it, and we post updates on X as @tcalcit. If TCalc.it saves you time, the Pro purchase is what keeps it being built.