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Explore 114+ free browser tools across calculators, converters, text, dev, security, and design — including BAC, mortgage, JSON↔CSV, UUID, SHA-256, and CSS gradient utilities.
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Calculator
14 tools
Free online calculator tools — BAC, mortgage, ovulation, sleep cycle, subnet, water intake, SPF, and more. No sign-up. Instant results in your browser.
Browse Calculator toolsConverter
32 tools
Free online converter tools — Base64, URL encode/decode, color formats, data size, JSON↔CSV, text↔binary, hex, Morse code, and more. Instant in-browser
Browse Converter toolsText
26 tools
Free online text tools — word counter, text reverser, case converter, duplicate remover, diff checker, regex tester, Zalgo text, and 20+ more. No sign-up
Browse Text toolsDev
25 tools
Free online developer tools — JSON validator, minifiers, SQL formatter, cron generator, JWT decoder, UUID generator, IP lookup, regex, and more. No sign-up.
Browse Dev toolsSecurity
12 tools
Free online security tools — password generator, strength checker, hash generator (MD5/SHA), AES & RSA key generation, HMAC, passphrase generator, and more.
Browse Security toolsDesign
5 tools
Free online CSS and design tools — CSS gradient generator, box shadow builder, triangle generator, color palette maker, and meta tag generator. No account
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