Built for accuracy, designed for privacy.
Work Hours Calculator started from a simple frustration: most online time calculators either require an account, bury the tool behind ads and pop-ups, or get the math wrong on overnight shifts. We wanted something faster — a tool that updates the moment you type, handles every edge case correctly, and never asks for your data.
What we built
The calculator runs a full week of start times, end times, and breaks, and instantly produces your total hours, regular vs. overtime split, and an estimated gross paycheck. It correctly handles shifts that cross midnight, never lets a daily total drop below zero, and recalculates in real time as you type — no "Calculate" button, no page reloads.
Why it's private by design
There is no backend. Every calculation happens with JavaScript directly in your browser. Your schedule, your pay rate, and your hours never leave your device, and nothing is logged or stored anywhere. You can verify this yourself: the entire tool works even without an internet connection once the page has loaded.
Who it's for
Hourly employees double-checking a paycheck, freelancers logging billable time, managers building a quick weekly schedule, and anyone who just needs to know how many hours they worked this week — without signing up for yet another app.