Calculators
Fast answers for everyday math, dates, and money calculations.
27 tools
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Percentage Calculator
Find a percentage of a number or calculate what percentage one value is of another.
Open tool →Age Calculator
Calculate age in years, months and days between two dates.
Open tool →Compound Interest Calculator
Estimate future value with compound interest and optional monthly contributions.
Open tool →Simple Interest Calculator
Calculate interest earned or owed using principal, rate and years.
Open tool →Tip Calculator
Split a bill and calculate the tip per person.
Open tool →Discount Calculator
Find sale price and savings after a percentage discount.
Open tool →Loan Payment Calculator
Estimate fixed monthly loan payments and total interest.
Open tool →Ratio Calculator
Simplify a two-number integer ratio to its lowest terms.
Open tool →Average Calculator
Find mean, minimum, maximum and total from a list of numbers.
Open tool →Median Calculator
Find the middle value in a sorted list of numbers, including even-length lists.
Open tool →Standard Deviation Calculator
Calculate population or sample standard deviation from a list of numbers.
Open tool →Percentage Change Calculator
Calculate percentage increase or decrease between original and new values.
Open tool →Percentage Difference Calculator
Compare two values with a symmetric percentage difference.
Open tool →Profit Margin Calculator
Calculate gross profit margin, profit, and markup from cost and selling price.
Open tool →Sales Tax Calculator
Add a percentage sales tax to a pre-tax price.
Open tool →GCD and LCM Calculator
Find the exact greatest common divisor and least common multiple of two integers.
Open tool →Fraction Simplifier
Reduce a whole-number fraction to its lowest terms with exact arithmetic.
Open tool →Weighted Average Calculator
Calculate a mean from numerical values and their individual weights.
Open tool →Quadratic Equation Solver
Find real or complex roots of ax² + bx + c = 0.
Open tool →Mortgage Payment Calculator
Estimate monthly principal and interest plus property tax, insurance and HOA costs.
Open tool →Savings Goal Calculator
Calculate the monthly deposit needed to reach a target with optional starting savings and interest.
Open tool →Concrete Volume Calculator
Estimate concrete volume for a rectangular slab in cubic meters, including a waste allowance.
Open tool →Paint Calculator
Estimate liters of paint for a surface area, coverage rate, coats and extra allowance.
Open tool →Flooring Tile Calculator
Estimate whole tiles needed from room and tile dimensions with a cutting allowance.
Open tool →Circle Area Calculator
Find circle area, circumference and diameter from a radius.
Open tool →Pythagorean Theorem Calculator
Calculate a right triangle's hypotenuse from its two perpendicular legs.
Open tool →Factorial Calculator
Calculate exact factorials for whole numbers from 0 through 300 using BigInt.
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