Calculators
Free online calculators for math, business, and everyday calculations. Fast, accurate, no signup.
Percentage Calculator
Calculate percentages instantly. Find what percent one number is of another, percentage increase/decrease, and more.
Tool nutzenAge Calculator
Calculate your exact age in years, months, days, hours, and minutes from your date of birth.
Tool nutzenTip Calculator
Calculate tips and split bills easily. Choose a tip percentage, split between people, and see per-person totals.
Tool nutzenFraction Calculator
Add, subtract, multiply, and divide fractions with step-by-step solutions.
Tool nutzenMargin Calculator
Calculate profit margin, markup percentage, and profit from cost and revenue.
Tool nutzenAverage Calculator
Calculate mean, median, mode, range, sum, and more from a set of numbers.
Tool nutzenDiscount Calculator
Calculate sale prices, savings, and final totals with discount percentage and optional tax.
Tool nutzenSquare Root Calculator
Calculate square roots, cube roots, and nth roots. Shows simplified radical form.
Tool nutzenRatio Calculator
Simplify ratios to lowest terms and solve proportions. Find the missing value in A:B = C:?
Tool nutzenMarkup Calculator
Calculate markup percentage, selling price, and profit from cost. Compare markup vs margin.
Tool nutzenGCF Calculator
Find the greatest common factor (GCF) and least common multiple (LCM) of two or more numbers.
Tool nutzenGPA Calculator
Calculate your Grade Point Average from letter grades and credit hours.
Tool nutzenDate Calculator
Calculate the difference between two dates or add/subtract days from a date.
Tool nutzenHours Calculator
Calculate the hours and minutes between two times.
Tool nutzenTime Card Calculator
Calculate weekly work hours from daily start and end times.
Tool nutzenTime Duration Calculator
Add or subtract hours, minutes, and seconds to calculate total duration.
Tool nutzenCompound Interest Calculator
Calculate compound interest on savings or investments with customizable rates and periods.
Tool nutzenLoan Calculator
Calculate monthly loan payments and view a full amortization schedule.
Tool nutzenSquare Footage Calculator
Calculate the area of rooms and spaces in square feet, square meters, and other units.
Tool nutzenÜber Calculators
These free online calculators handle common math and business calculations: percentages, fractions, averages, margins, markups, discounts, ratios, and more. Each calculator runs entirely in your browser with nothing sent to a server. Results update instantly as you type, with step-by-step breakdowns where helpful. Use them for homework, business planning, shopping, or any quick calculation you need.