More free tools from our network.

Beyond images, we maintain a network of free, focused tools across calculators, developer utilities, text processing, and reference. All free, all useful, all without signup.

Each site below does one thing well. No accounts, no rate limits, no surprise paywalls. Same philosophy as pictoolkit — focused tools that respect your time.

Calculators

Square Footage Calculator
Calculate square footage for rooms, lots, and projects. Supports rectangles, triangles, circles, and irregular shapes.
thesquarefootagecalculator.com ↗
Best Percentage Calculator
Percentage calculations of every variety — increase, decrease, of-total, tip, tax, and more.
bestpercentagecalculator.net ↗
Age Calculator
Calculate exact age in years, months, days, hours. Works between any two dates.
theagecalculator.net ↗
Calculate Hours
Time duration calculator. Add or subtract hours and minutes between time entries.
calculatehours.net ↗

Developer

Base64 Decoder
Encode and decode Base64 strings. Supports text, URLs, and binary data.
base64decode.tools ↗
URL Encode / Decode
Encode and decode URL strings with proper percent-encoding for special characters.
urlencodedecode.com ↗
JSON Tools
Format, validate, minify, and convert JSON. Includes JSON to CSV and JSON diff.
jsontools.tools ↗
UUID Core
Generate UUIDs (v1, v4, v5) for development, testing, and database keys.
www.uuidcore.com ↗
Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-512 hashes from text or files.
hashgenerator.tools ↗
Epoch Time Converter
Convert between Unix epoch timestamps and human-readable dates.
epochtime.tools ↗
Crontab Cheatsheet
Build and validate cron schedule expressions with human-readable explanations.
crontabsheet.com ↗
Regex Guide
Test, build, and learn regular expressions with real-time matching.
regexguide.com ↗

Security

Password Strength
Test password strength against modern requirements. Checks for entropy, common patterns, breaches.
passwordstrength.net ↗

Text

Word Counter
Count words, characters, sentences, paragraphs, and reading time for any text.
wordcounterfree.com ↗
Text Repeat
Repeat any text N times with custom separators. Useful for testing, padding, and bulk generation.
textrepeat.net ↗
Transform Case
Convert text between cases — upper, lower, title, camel, snake, kebab, sentence.
transformcase.com ↗

Reference

Unit Cheatsheet
Convert between metric and imperial units across length, weight, volume, area, and temperature.
unitcheatsheet.com ↗
Clock With Us
World clock with timezone comparisons. Helpful for scheduling across regions.
clockwithus.com ↗

Have a tool you wish existed? Let us know — we're always adding to the network.