Financial
FreeMortgage Calculator
Estimate a monthly mortgage payment from the loan amount, rate and term. Add taxes and insurance, and see total interest plus a full amortization schedule.
Open tool FreeLoan Calculator
Work out the monthly payment, total interest and total repayment for an auto, personal or student loan. Enter the term in months or years.
Open tool FreeCompound Interest Calculator
See how savings grow with compound interest and regular contributions — the final balance, how much is interest, and a year-by-year breakdown with a chart.
Open tool FreeSalary Calculator
Convert pay between hourly, daily, weekly, biweekly, monthly and annual. Set your hours per week and weeks per year for an accurate full conversion table.
Open tool FreeTips Calculator
Add a tip to a bill and split it evenly. Pick a quick percentage or set your own, choose the number of people, and see the tip, total and amount each.
Open tool FreePercentage Calculator
Answer the three common percentage questions: what is X% of Y, X is what percent of Y, and the percent increase or decrease from one number to another.
Open tool FreeSales Tax Calculator
Add or remove sales tax; state base-rate table.
Open tool FreePaycheck Calculator
Take-home pay after federal, FICA & state tax.
Open toolTime & Date
FreeHours Calculator
Find the total time between a start and end time, with an optional break. Handles overnight shifts and shows the result in hours, minutes and decimal hours.
Open tool FreeTimecard Calculator
Enter a week of shifts with breaks and an hourly rate. Get daily hours, the weekly total, regular vs overtime hours and gross pay — all in one printable table.
Open tool FreeAge Calculator
Calculate an exact age from a birth date to any target date — in years, months and days, plus the total in weeks, days and hours. Leap years handled.
Open toolMath & Numbers
FreeScientific Calculator
Trigonometry, logarithms, powers, roots, factorial, constants and memory — in degrees or radians, with full keyboard support and no sign-up.
Open tool FreeFraction Calculator
Add, subtract, multiply, divide and simplify fractions and mixed numbers — with the answer as a reduced fraction and a decimal, plus the working.
Open tool FreeScientific Notation Calculator
Convert any number to scientific, E- and engineering notation — or add, subtract, multiply and divide in scientific notation, with the steps explained.
Open tool FreeCubic Feet Calculator
Work out cubic feet from length, width and height in any unit, for a box or a cylinder — with cubic yards, cubic metres, litres and gallons alongside.
Open tool FreeHeat Index Calculator
Turn temperature and humidity into the "feels like" heat index, with a risk level and a full heat index chart.
Open tool FreeRounding Calculator
Round any number to the nearest place, decimal or significant figure, with half-up, banker's, ceiling, floor and truncate modes — and see which digit decided.
Open tool FreePEMDAS Calculator
Solve any expression in the correct order of operations (PEMDAS / BODMAS), one step at a time, with parentheses, exponents and roots.
Open tool FreeSens Converter
Convert your mouse sensitivity between Valorant, CS2, Apex, Overwatch 2, Fortnite and more — matched by real 360° distance, with eDPI and cm/360 shown.
Open tool FreeGPA Calculator
Turn your course grades and credit hours into a GPA on the 4.0 scale, with weighted GPA for Honors and AP/IB classes.
Open tool FreeBMI Calculator
Work out your Body Mass Index from height and weight in metric or imperial units, with your BMI category and healthy weight range.
Open tool