A growing toolkit.
Text utilities right here on Transform Case, plus calculators, encoders, and reference tools from our network of free single-purpose sites. All free, all browser-based, no signup anywhere.
Right here on Transform Case
Our own text tools — built with the same care for typography, privacy, and craft.
Find and Replace
Bulk text substitution with regex support
HTML Tag Stripper
Get plain text from HTML
Whitespace Cleaner
Tidy up messy text spacing
Markdown Table Generator
CSV/TSV in, Markdown table out
List Clean & Sort
Sort, dedupe, and clean lists
Invisible Characters
Reveal hidden Unicode characters
PDF Paste Cleanup
Reflow text copied from PDFs
From our network
Sister sites we've built and maintain — each one focused on doing a single job well, with the same approach: free, browser-based, no signup, nothing to install. Here's what each one is best at.
Square Footage Calculator
Measure rooms, floors, walls, and yards without the geometry. Punch in dimensions and it works out the square footage, then helps you size up what you actually need to buy — flooring boxes, paint cans, drywall sheets, sod — with a sensible waste allowance baked in. Made for renovators, contractors, and anyone staring at a tape measure wondering how much to order.
Percentage Calculator
The everyday percentages most people Google for: what's X% of Y, what percent is X of Y, how much you saved on a sale price, how big a raise really is, and how to split a tip or tax. Each calculation is laid out as its own clean form, so you don't end up squinting at a single overloaded field trying to remember which box is which.
Age Calculator
Type two dates and get the exact span between them — not just years, but years, months, weeks, and days, plus the total in each unit on its own. Useful for working out someone's age on a specific date, planning a milestone, calculating how long ago an event was, or filling in forms that need a precise duration.
Base64 Decode
Paste a Base64 string and read it back as text, or paste text and get a Base64 string out. Works on files too, so you can encode an image into a data URL or decode one back into a downloadable file. Everything runs in your browser tab — nothing is uploaded, which matters when the content is sensitive.
URL Encode / Decode
Encode strings so they can be safely dropped into a URL, or decode percent-encoded URLs back into readable text. Handy when you're debugging an API call, sharing a URL with weird characters, or trying to figure out what %20 and friends actually meant. Component and full-URL modes are both supported.
Password Strength
Test how strong a password really is — estimated entropy, time-to-crack at common attack speeds, and what's hurting the score (length, dictionary words, predictable patterns). The check happens entirely in your browser, so the password you're testing never leaves your machine. Use it before committing to a new master password or rotating an old one.
Word Counter
Paste any block of text and instantly see word count, character count (with and without spaces), sentence count, paragraph count, and an estimated reading time. Built for writers hitting a word target, students managing essay limits, editors trimming copy, and anyone who needs the numbers without opening a word processor.
UUID Generator
Generate UUIDs — one at a time or hundreds in a batch — in the version you actually need: v1 (time-based), v4 (random), or v7 (time-ordered and sortable, the modern default for database keys). Output is plain text you can paste straight into seed scripts, fixture files, or migrations.
JSON Tools
A small kit for working with JSON without leaving the browser: pretty-print messy payloads, validate against a schema, minify for transport, convert to and from related formats, and diff two JSON documents side by side. Built for API debugging, log inspection, and tidying up the output of whatever just hit your console.
Hash Generator
Hash any text or file with the algorithms you'll actually encounter — MD5, SHA-1, SHA-256, SHA-512 — computed locally so the content never gets uploaded. Useful for verifying a file download against its published checksum, generating cache keys, or sanity-checking integrity in a deployment pipeline.
Epoch Time
Convert Unix timestamps to human-readable dates and back, in any timezone, with second or millisecond precision. Reads “1700000000” the way you'd read a calendar, and shows you what your local clock said at that instant. Indispensable when you're staring at log lines, JWT expiries, or a database column full of seconds-since-epoch.
Text Repeat
Paste a snippet, set a repeat count, choose a separator (newline, comma, custom), and get the result. Sounds trivial — until you need 50 placeholder rows for a database seed, 100 copies of a CSV line for a load test, or a column of identical values to paste into a spreadsheet.
Crontab Sheet
A no-guesswork cron expression reference: pick the schedule you want in plain English (every weekday at 9am, every 15 minutes on the hour, first of the month at midnight) and get the matching crontab line, plus a preview of the next several run times. Doubles as a cheatsheet for the syntax everyone forgets between writes.
Regex Guide
A live regex tester paired with a reference for the parts of the syntax people get wrong — lookaheads, capture groups, anchors, character classes, flags. Type a pattern and your test string, see matches and groups highlighted in real time, and tweak until the expression does what you meant.
Unit Cheat Sheet
A clean cross-unit converter for the dimensions you actually convert — length, weight, volume, area, temperature, speed, time, data size — with both metric and imperial in one view. Built to be faster than typing “X to Y” into a search engine, and clear about which conversions are exact versus rounded.
Calculate Hours
Add up hours worked across a week or pay period: enter clock-ins and clock-outs, subtract breaks, and get the total in hours-and-minutes and decimal hours. Made for hourly workers checking their own time card, freelancers invoicing clients, and small-business owners cobbling timesheets together by hand.
Clock With Us
World clocks for the cities you actually work with, a meeting-time finder that shows everyone's local hour at a glance, plus straightforward timers and alarms that keep running in the tab. Useful for scheduling across timezones without yet another calendar plugin, or just for keeping “what time is it in Tokyo right now” one tab away.
Margin vs Markup
The two numbers people constantly mix up, side by side: enter a cost and a price and see both the profit margin and the markup, or work backwards from a target. Add platform fees, shipping, and tax to see what actually lands in your account. Built for sellers, freelancers, and anyone pricing a product who's tired of guessing which percentage their accountant meant.
Dimensional Weight Calculator
Carriers bill the greater of actual weight and volumetric (“DIM”) weight, and the divisor that decides it differs by carrier and year. Punch in box dimensions and weight and see the billable figure for FedEx, UPS, USPS, DHL, and a dozen more, with the current divisors already filled in. Made for shippers comparing rates before a parcel ever leaves the desk.
Box Volume Calculator
Enter length, width, and height in whatever units you have and get the volume out in the units you want — cubic feet, cubic inches, litres, cubic metres. Useful for packing and storage planning, working out how much a container holds, or feeding a volume figure into a shipping or material estimate without doing the multiplication by hand.
Girth Calculator
Two calculators under one roof: parcel length-plus-girth checked against the size limits carriers actually enforce, so you know before you ship whether a box counts as oversize; and body-circumference measurements for fitness tracking. Punch in the dimensions and it does the 2×(width + height) arithmetic and the comparisons for you.
Solar Calculator
Free, unbiased solar and off-grid sizing without a sales pitch attached: estimate the system size for your usage, the payback period and lifetime savings, and how big a battery bank you'd need to ride through the night or an outage. Built for homeowners and tinkerers who want the numbers first and the installer quotes second.
CIDR Calculator
Paste a CIDR block and get the network and broadcast addresses, usable host range, and total count, then split or join subnets visually. Handles IPv4 and IPv6, knows the reserved IPs cloud providers carve out of each subnet (AWS, Azure, GCP), and exports the result as Terraform. Made for network engineers planning address space without a spreadsheet.
Subnet Mask Calculator
Type an IP and prefix and get the subnet mask, wildcard mask, network and broadcast addresses, and the usable host range, with a clean breakdown of the bits. Plans variable-length subnets (VLSM), covers IPv4 and IPv6, and includes a learn center for the parts of subnetting that never quite stick. The quick-reference companion to the CIDR tool.
Picture Toolkit
A pocketful of image utilities that run entirely in the browser — compress, convert between JPG/PNG/WebP/AVIF/HEIC, resize, crop, and watermark — with nothing uploaded to a server. Handy for shrinking photos before email, converting a HEIC off your phone into something everything can open, or batch-resizing a folder of images for the web.
Remove Metadata
Strip the hidden data your files carry before you share them: EXIF and GPS coordinates baked into photos, author and revision history in PDFs and Office documents. It shows you exactly what's in there first, then removes it — all locally in your browser, so the file you're cleaning never leaves your device. Built for anyone who'd rather not broadcast where a photo was taken.
Have a free tool you'd like to see linked here, or a suggestion for a new one? Get in touch.