Numbers & text Tools
Browse calculators, calendars, timers and reference tools. The complete collection is below.
Numbers & text
Unix Timestamp Converter
Convert Unix timestamps in seconds or milliseconds to UTC dates, or turn an ISO 8601 date and time into a timestamp.
Numbers & textRoman Numeral Converter
Convert whole numbers from 1 to 3999 to Roman numerals, or validate and convert standard Roman numerals back to numbers.
Numbers & textPercentage Calculator
Calculate a percentage of a number, find what percentage one number is of another, or measure percentage increase and decrease.
Numbers & textUnit Converter
Convert length, mass, temperature and duration units, with clear source and destination units beside every result.
Numbers & textWord & Character Counter
Count words, characters, sentences and paragraphs as you type. Estimate reading time at your chosen reading speed, entirely in your browser.
Numbers & textRatio Simplifier & Split Calculator
Simplify a whole-number ratio and divide a total into two proportional shares.
Numbers & textAverage, Median & Range Calculator
Find the mean, median, sum, range and extremes of a list of numbers.
Numbers & textFraction Calculator
Add, subtract, multiply or divide two fractions and reduce the answer to lowest terms.
Numbers & textScientific Notation Converter
Convert ordinary numbers and E notation into a normalized scientific-notation display.
Numbers & textGCD & LCM Calculator
Find the greatest common divisor and least common multiple of two positive integers.
Numbers & textRounding Calculator
Round to decimal places or powers of ten, with explicit nearest, floor and ceiling rules.
Numbers & textRandom Number Generator
Generate a bounded list of random integers, with an option to prevent duplicates.
Numbers & textReading Time Calculator
Estimate reading duration from text and a pace you choose, with a visible word count.
Numbers & textText Case Converter
Change text to uppercase, lowercase, simple title case or sentence case in your browser.
Numbers & textRemove Duplicate Lines
Remove repeated lines while keeping the first occurrence and original list order.
Numbers & textSort Lines
Sort a plain-text list alphabetically or numerically in ascending or descending order.
Numbers & textWhitespace Cleaner
Trim line edges, collapse repeated spaces, remove blank lines or turn text into one line.
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