Tools we use, free for you.
A curated set of browser-based utilities for calculation, encoding, image work, formatting, and text. No signups, no upsells, no nonsense — just the tool, doing the thing.
Calculators & Math
9 toolsSquare Footage Calculator
Calculate room and floor area in square feet, square meters, or square yards. Multi-shape support.
Percentage Calculator
Compute percentages, percent change, percent of a number, and reverse percentage problems.
Age Calculator
Calculate exact age in years, months, and days. Works for any date — past, present, future.
Hours Calculator
Add, subtract, and calculate hours and minutes. Useful for timesheets and time tracking.
Dim Weight Calculator
Dedicated dimensional weight calculator for carriers. Companion to our shipping tool.
Unit Cheat Sheet
Quick reference for unit conversions across distance, weight, volume, temperature, and more.
Margin vs Markup
Convert between profit margin and markup, find break-even, and factor in platform fees, shipping, and tax.
Girth Calculator
Parcel length-plus-girth against carrier size limits, plus body circumference measurements for fitness tracking.
ProSolarCalc
Free, unbiased solar and off-grid calculators — system sizing, savings and payback, and battery banks.
Developer Tools
9 toolsBase64 Encoder / Decoder
Encode and decode text or files to and from Base64. Supports image uploads and binary data.
URL Encode / Decode
Encode and decode URL components. Handles percent-encoding for special characters cleanly.
UUID Generator
Generate UUIDs (v1, v4, v5) one at a time or in bulk. Copy with a single click.
JSON Tools
Format, validate, minify, and compare JSON. Built-in syntax checking and error highlighting.
Hash Generator
Compute MD5, SHA-1, SHA-256, SHA-512 hashes for text or files. All in-browser.
Crontab Sheet
Build and interpret cron expressions. Visual editor with human-readable explanations.
Regex Guide & Tester
Build, test, and debug regular expressions. Includes a syntax reference for major flavors.
CIDR Calculator
Calculate, split, and visualize subnets. IPv4/IPv6, VLSM planner, cloud-aware reserved IPs, and Terraform export.
Subnet Mask Calculator
Network and broadcast addresses, usable host range, wildcard masks, and VLSM planning for IPv4 and IPv6.
Time & Date
2 toolsText & Strings
4 toolsWord Counter
Count words, characters, sentences, paragraphs. Reading-time estimate included.
Text Repeat
Repeat any text or string N times. Useful for testing, dummy content, and patterns.
Transform Case
Convert text between upper, lower, title, snake, kebab, camel, and constant case.
Password Strength
Test password strength and estimated crack time. All checks happen locally in your browser.
Images & Media
2 toolspictoolkit
35+ browser-based image tools — compress, convert, resize, crop, HEIC to JPG, favicon generator, and more. Files never leave your device.
Remove Metadata
Strip EXIF, GPS, and hidden metadata from images, PDFs, and Office files — locally in your browser.
Same philosophy, every tool.
The calculators and utilities themselves run entirely in your browser — your inputs and results stay on your device, never sent to a server. To keep the network free, we use Google Analytics for traffic measurement and show ads through Google AdSense and Adsterra. No signups, no accounts, no upsells. See our privacy policy for details.