Everyday Calculators: Tips, Discounts, Age and Area
Split a bill, check a discount, calculate an age or measure a room. These everyday calculators turn a few inputs into a practical answer, with the units and totals shown clearly.
- Tip CalculatorTip amount, total, and split per person.
- Age CalculatorExact age in years, months, and days, plus a countdown to the next birthday.
- Discount CalculatorSale price and savings for a percent off, with stacked discounts and sales tax.
- Square Footage CalculatorArea of a room or plot in square feet, yards, and meters, with a materials cost estimate.
Find the tool for the task
- Split a bill including the tip
- Tip Calculator. Enter the bill, tip percentage and number of people to see the tip, total and share per person. Adjust the percentage to compare amounts before splitting.
- Check the final sale price
- Discount Calculator. Calculate a percent-off price and the amount saved. You can apply a second discount and sales tax instead of treating every percentage as a deduction from the original price.
- Measure floor space and material cost
- Square Footage Calculator. Choose a shape and enter its dimensions to get area in square feet, square yards and square meters. Add a price and waste allowance for a materials estimate.
Common questions
Can I calculate an age on a date other than today?
Yes. The age calculator accepts a date of birth and an as-of date. It shows the elapsed years, months and days, which is different from simply dividing a day count by 365.
Where do I count days between two dates?
Use the date calculator in the time and dates section for elapsed days, weekday counts or adding a span to a date. Use the age calculator when you want a birth-date-based age breakdown.
Continue with a related calculation
- Time and Date Calculators: Hours, Durations and Days. Count days, add durations or total work hours.
- Math Calculators: Percentages, Fractions and Averages. Check a percentage, fraction or average behind an everyday calculation.