6 pages
Everyday life
Dates, tips, and other arithmetic that should take a few seconds.
- CalculatorTip calculatorSplit a bill and a tip across the table from the bill amount, the tip percent, and how many people are paying.
- CalculatorAge calculatorFind an age in years, months, and days from a birth date and an optional as-of date.
- CalculatorDays between datesCount the days between two calendar dates, including neither extra day beyond the span you picked.
- GuideHow to calculate a tipCompute the tip from the bill and a percent, then split the total only after the tip is included once.
- GuideHow to calculate age from a birth dateCount finished years, then finished months, then days, and do not stop at a simple year subtraction.
- GuideHow to count days between two datesCount calendar days between two dates without losing or double-counting the day a month changes.