Calculator
Basic arithmetic, percentages and expressions.
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Free Online Tools for Everyday Questions
QuickTools provides simple calculators, converters, timers, generators, checkers, finders, solvers and estimators that work in your browser. No signup required.
Percentage Calculator
Calculate percentages, increases, decreases and differences.
Open Percentage CalculatorDiscount Calculator
Find sale prices and savings instantly.
Open Discount CalculatorFraction Calculator
Add, subtract, multiply and divide fractions.
Open Fraction CalculatorUnit Converter
Convert length, weight, volume and temperature.
Open Unit ConverterCurrency Converter
Convert common currencies using current rates when available.
Open Currency ConverterTime Converter
Convert seconds, minutes, hours and days.
Open Time ConverterTimer
Start a simple countdown timer.
Open TimerCountdown
Count down to any date and time.
Open CountdownDate Calculator
Add or subtract days from a date.
Open Date CalculatorDate Difference
Find the number of days between two dates.
Open Date DifferenceRandom Generator
Generate numbers, letters, passwords, dice and choices.
Open Random GeneratorName Generator
Generate random first names and character names.
Open Name GeneratorPassword Generator
Create a strong random password in your browser.
Open Password GeneratorCoin Flip
Flip a virtual coin.
Open Coin FlipDice Roller
Roll one or more virtual dice.
Open Dice RollerYes / No Generator
Let the computer make the decision.
Open Yes / No GeneratorPalindrome Checker
Check whether text reads the same backward.
Open Palindrome CheckerWord Counter
Count words, characters and sentences.
Open Word CounterAnagram Solver
Find words that can be made from your letters.
Open Anagram SolverDictionary Lookup
Look up an English word definition.
Open Dictionary LookupDay Lookup
Find the weekday for any date.
Open Day LookupTip Calculator
Calculate tip, total and per-person share.
Open Tip CalculatorSales Tax Calculator
Calculate tax and total from a price.
Open Sales Tax CalculatorLoan Payment Calculator
Estimate monthly principal and interest payment.
Open Loan Payment CalculatorMortgage Calculator
Estimate mortgage payment and total interest.
Open Mortgage CalculatorCompound Interest Calculator
Estimate growth with compound interest.
Open Compound Interest CalculatorSimple Interest Calculator
Calculate simple interest.
Open Simple Interest CalculatorBill Splitter
Split a bill among any number of people.
Open Bill SplitterAge Calculator
Calculate age in years and months.
Open Age CalculatorBMI Calculator
Calculate body mass index.
Open BMI CalculatorGPA Calculator
Estimate GPA from grades and credits.
Open GPA CalculatorCalorie Estimator
Estimate daily calorie needs from basic inputs.
Open Calorie EstimatorQuadratic Solver
Solve ax² + bx + c = 0.
Open Quadratic SolverNumber Finder
Find integers matching divisibility rules.
Open Number FinderGCD & LCM Finder
Find greatest common divisor and least common multiple.
Open GCD & LCM FinderPrime Checker
Check whether a number is prime.
Open Prime CheckerRandom Picker
Pick one item from your list.
Open Random PickerTip & Bill Estimator
Estimate tip and per-person bill.
Open Tip & Bill EstimatorFuel Cost Estimator
Estimate trip fuel cost.
Open Fuel Cost EstimatorPaint Calculator
Estimate paint needed for walls.
Open Paint CalculatorConcrete Calculator
Estimate concrete volume for slabs, footings and round forms.
Open Concrete Calculator