Everyday Calculators

The quick sums of daily life — percentages, tips, discounts, sales tax, GPA, age, time durations and unit conversions.

• Percentage calculatorThe everyday percentage questions in one place — what is X% of Y, X is what percent of Y, the percentage…
• Tip & bill split calculatorEnter the bill, pick a tip percentage and split it between any number of people — see the tip, the total and…
• Discount, markup & margin calculatorThree everyday pricing sums in one: the discount (a % off → sale price and how much you save), the markup…
• Sales tax & VAT calculatorAdd sales tax / VAT to a net price to get the gross, or strip the tax out of a gross price to find the net —…
• GPA calculatorList your courses with a letter grade and the credit hours for each and get your weighted grade-point average…
• Age calculatorEnter a date of birth and get the exact age in years, months and days, the totals in months, weeks, days and…
• Time duration calculatorWork out how long there is between a start and end time — handling shifts that run past midnight and…
• Unit & date calculatorConvert length, weight, temperature, area, volume, speed, data and time — and work out the days between dates…