Free Tech Utilities

Handy calculators, converters, and generators for everyday engineering and tech tasks outside a single dev stack.

Your data stays in your browser

Sensitive inputs (tokens, passwords, keys, and configs) are processed locally in your browser and is never sent to a server.

1–10 of 16

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Text Transform Studio

Wrap, reverse, ROT13, indent, strip comments, acronyms, and Unicode cleanup.

Word counts, palindrome checks, and Levenshtein edit distance.

Validate against schemas and estimate JSON payload sizes.

Ports, latency, IP/MAC formatting, IPv6 compression, and subnet host counts.

Encode text to hexadecimal and decode hex bytes to UTF-8.

Encode and decode HTML entities for safe markup embedding.

Encode and decode Base64 text in the browser.

Unix timestamps, epoch milliseconds, ISO validation, date diffs, age, and timezones.

Convert hex/RGB colors, number bases, and Roman numerals.

Percentages, GCD/LCM, primes, Fibonacci sequences, and safe expression eval.

1–10 of 16

Per page