RandoziFree online tools
Quick calculators, date tools, unit converters and text tools. Everything is computed in your browser: what you type is never uploaded.
Calculators
- Percentage CalculatorThree everyday percentage questions in one place — pick the one you need and the answer updates as you type.
- Tip CalculatorEnter the bill, choose a tip and split it — the tip, the total and what each person owes appear right away.
- Discount CalculatorFind the real price after a sale — including “an extra 10% off” on top of a first discount.
- BMI CalculatorEnter your height and weight in feet and pounds or in centimeters and kilograms to get your adult BMI and its category.
- Average CalculatorPaste or type your numbers and get the mean, median, mode and more — no spreadsheet needed.
- Loan CalculatorEnter the amount, the interest rate and the term to estimate your monthly payment and what the loan costs in total.
Date & time
- Age CalculatorEnter a birth date and see exactly how old someone is today — or on any other date you choose.
- Date DifferencePick a start date and an end date to see how many days, weeks and months separate them.
- Add or Subtract DaysPick a date, add or subtract a number of days, weeks, months or years, and get the date you land on.
- StopwatchStart, stop and record laps — the time keeps running correctly even if you switch tabs.
- Countdown TimerSet the time, press Start, and get a short beep when it reaches zero — the time left stays visible in your browser tab.
Unit converters
- Length ConverterType a length, pick two units and read the answer instantly — with the same value in every other unit just below.
- Weight ConverterEnter a weight, choose two units and get the answer as you type — plus the same weight in every unit.
- Temperature ConverterType a temperature and see it in Celsius, Fahrenheit or Kelvin right away, along with the formula used.
- Volume ConverterEnter a volume, choose two units and get the answer instantly — from teaspoons to cubic meters, US or imperial.
Text tools
- Word CounterPaste or type your text — words, characters, sentences, reading time and top words update instantly, right in your browser.
- Case ConverterPaste your text, pick a case and copy the result — from Title Case headlines to snake_case variable names.
- Remove DuplicatesPaste a list with one item per line — duplicates disappear and the first occurrence of each line stays in place.
- Sort LinesPaste a list, pick an order — A to Z, natural, by length, reversed or shuffled — and copy the sorted lines.
- Password GeneratorChoose a length and the characters to use, then generate a strong password — created on your device, never sent or saved.
Random tools
- Coin FlipHeads or tails? Tap to toss a fair virtual coin — every flip is an independent 50/50.
- Dice RollerPick how many dice and how many sides, then roll. Each die is fair and the total is added up for you.
- Number GeneratorSet a minimum and a maximum, choose how many numbers you need, and generate — with or without repeats.
- Pair GeneratorPaste your names and get random partners in one click — nobody is ever left alone.
- Random OrderPaste a list and shuffle it into a fair random order — who goes first, second, third…