Password and random number generators, percentage, age and date calculators, and placeholder text.
Generate strong random passwords with your browser's secure random number generator. Choose length and character types, with nothing stored or sent.
Generate random integers between a minimum and a maximum, with optional unique numbers, using secure browser randomness.
Find a percentage of a number, what percent one number is of another, or the percentage change between two values, in your browser.
Calculate age in years, months, and days from a date of birth to today or any date, using real calendar arithmetic.
Find the number of days, weeks, months, and years between two dates in your browser, in either order.
Generate lorem ipsum placeholder text as paragraphs, sentences, or words, built in your browser from a local word list.