Calculator category
Everyday Math Calculators
Handle percentages, discounts, shared bills, and price comparisons without guesswork. Each tool works without registration and explains its method.
Percentage Calculator
Find a percentage of any positive or negative number.
Everyday MathDiscount Calculator
Calculate savings, discounted subtotal, optional tax, and final price.
Everyday MathTip and Bill Split Calculator
Calculate a tip, total bill, and equal amount per person.
Everyday MathUnit Price Comparison Calculator
Compare two package prices on the same per-unit basis.
Everyday MathPercentage Change Calculator
Measure the percentage increase or decrease from an original value to a new value.
Everyday MathHow to use these estimates
Start with the values you know, test a reasonable range for uncertain inputs, and read the assumptions before acting. Important financial, legal, health, or business decisions may deserve qualified professional advice.