Text and math tools
Change text into sentence case, title case or a naming style for code. Count vowels, words and characters, or check whether an integer is prime. The text tools update as you type. The prime checker explains its result and distinguishes a proven prime from a probable prime when the input exceeds its deterministic range.
Case converter
Convert text to sentence case, title case, uppercase, lowercase, camelCase, snake_case and other naming styles.
Vowel counter
Count vowels, consonants, words and characters as you type. Compare the frequency of each vowel.
Prime number checker
Check whether an integer is prime and find its factors. Supports large numbers and labels probable-prime results.
Word and character counter
Count words, visible characters, bytes and selected text. Estimate reading time at your chosen speed.
Percentage calculator
Calculate a percentage, a proportion, percent change or an adjusted value with readable steps.
Text cleanup and list organizer
Trim, deduplicate, sort and reshape lists with an ordered recipe while keeping the original text available.
Fraction calculator
Add, subtract, multiply or divide exact fractions, mixed numbers and decimals with reduced results and steps.
