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Convert a run or walk finish time into pace per mile or kilometer, plus speed in your chosen distance unit.

Measure the distance between two dates in days, weeks, and a calendar-style year-month-day span.

Calculate exact age from a birth date, days lived so far, and the date of the next birthday.

Convert one date and time across a fixed set of major world time zones, including all core US zones and common international hubs.

Run a local focus timer with configurable focus, short break, and long break lengths plus simple start, pause, and reset controls.

Generate a random password with configurable length, character sets, and ambiguous-character filtering.