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Kitoo is an online toolbox of small utilities for everyday tasks.
Popular tools
8 toolsDays Calculator
Calculate the number of days between two dates, or the date N days from now.
Age Calculator
Calculate exact age from a date of birth, including days lived and next birthday.
Character Counter
Count characters, lines, paragraphs and bytes of text in real time.
QR Code Generator
Create QR codes for URLs, text and Wi-Fi credentials in your browser.
JSON Formatter
Format, validate and minify JSON with precise error locations.
Timestamp Converter
Convert between Unix timestamps, ISO 8601 and local date-times.
Percentage Calculator
Percentages, increase/decrease rates, discounts and reverse calculation.
Password Generator
Generate strong passwords, passphrases and PINs locally.
Tool categories
Featured tools
Business Days Calculator
Count business days excluding weekends and Japanese national holidays.
Image Compressor
Compress JPEG, PNG and WebP images in bulk, entirely in your browser.
PDF Tools
Merge, extract and rotate PDF pages locally in your browser.
Hash Calculator
Compute and verify MD5, SHA-256 and other hashes for text and files.
How it works
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