Billable Hours Calculator

Billable Hours Calculator turns raw project time into an accurate bill — automatically. Whether you're a freelancer, consultant, contractor, or anyone who bills by the hour, this app removes the guesswork and spreadsheet math from tracking what you're owed. TIME IT TWO WAYS • Start a live timer the moment you begin working — pause and resume anytime, and it stays accurate even if you switch apps or lock your phone. • Forgot to start the timer? Log a session manually down to the exact minute, backdated to any date and time, with an optional note. YOUR BILLING RULES, YOUR WAY • Set a rate per block (e.g. $50 per 15 minutes) for each project. • Choose per-session rounding, where every session rounds up individually, or cumulative rounding, where your total raw minutes are summed first and rounded once. • Add an optional flat setup fee per project. • Set a minimum fee that automatically kicks in if a project's logged time falls under your floor. STAY ORGANIZED ACROSS CLIENTS • Color-code every project so you can tell clients apart at a glance. • See a running total the moment you log time, with a clear line-by-line breakdown of exactly how it was calculated. • Every session — timed or manual — is listed with its duration, date, and note, so you always have a record to back up your invoice. BUILT FOR HOW YOU WORK • Light and Dark mode, matched to your system or set manually. • No account, no login, no subscription required to track your time. Billable Hours Calculator doesn't try to be an all-in-one invoicing suite — it does one thing precisely: turns your logged time into the number you should be charging, exactly the way your contract says it should be calculated.