Other Calculators

Everyday tools that do not fit a single category, gathered in one place. Here you will find date and time calculators — age, date differences, hours worked, and business-day arithmetic — plus grade and GPA converters, unit and data conversions, an IP subnet calculator, a password generator, and construction estimators for concrete and materials. Each tool runs locally in your browser, needs no account, and shows the rule it applies so you can check the result yourself. If a calculator you need is missing, tell us and we will consider adding it.