Find date-aware meeting times across 42 named time zones, convert lists of measurements, estimate whole material packs and split group expenses with unequal shares. Meeting results show local dates and UTC offsets. Materials use explicitly supplied dimensions and coverage. Expense shares reconcile in integer minor units. The standalone website offers calendar and CSV downloads; ChatGPT tools return structured results. No calendar access, bookings, physical measurements, purchases, payments or exchange rates. Inputs are processed transiently. No paid model APIs are called.