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.
EMI Calculator (India)
Work out the monthly EMI on a home, car, or personal loan in India from the amount, interest rate, and tenure, then read the full amortization schedule — how much of each payment is principal versus interest, and how a prepayment shortens the term. Built for borrowers comparing offers before they sign.
Total Interest Calculator
See the total interest you'll pay over the life of a loan, not just the monthly figure — enter the principal, rate, and term and compare how different tenures or rates change the lifetime cost. A full amortization breakdown shows exactly where the money goes.
SIP Calculator
Project what a systematic investment plan could grow into: enter a monthly amount, expected return, and duration and see the maturity value and total wealth gained, with step-up SIPs and goal-based targets supported. Made for anyone planning mutual-fund investing without wrestling a spreadsheet.
GPA Calculator
Turn a term's grades into a GPA on the 4.0 or a weighted scale, convert letter grades and percentages, and work backwards to the grades you'd need to hit a target. Handles multiple courses with credit-hour weighting, for students tracking their academic standing.
Fraction Calculator
Add, subtract, multiply, and divide fractions and see every step of the working, not just the answer — common denominators, simplification, and the conversion to a decimal or mixed number. Built for students learning the method and anyone double-checking their arithmetic.
Calorie Calculator
Estimate the daily calories your body needs from your age, weight, height, and activity level, then set a target for losing, maintaining, or gaining weight — with a macro split to match. All based on the standard BMR and TDEE formulas, worked out in the browser.
BMI & BMR Calculator
Two health numbers in one place: your Body Mass Index against the standard healthy-weight ranges, and your Basal Metabolic Rate — the calories you burn at rest. Works in metric or imperial and folds activity into a daily calorie estimate.
AC Tonnage Calculator
Figure out the air-conditioner size a room actually needs from its floor area, climate, sun exposure, and occupancy — in both BTU and tons — so you neither undercool a space nor overpay for capacity you won't use. Handy before buying a window or split unit.
Tank Volume Calculator
Calculate the capacity of a tank — cylindrical, rectangular, or oval, horizontal or vertical — and the volume at a given fill level, in litres or gallons. Useful for water storage, fuel, aquariums, and any container where you need to know how much it holds or how full it is.
Cubic Yardage Calculator
Convert a length, width, and depth into cubic yards for the bulk materials sold that way — concrete, mulch, gravel, topsoil, sand — and get the quantity to order. Enter dimensions in feet, inches, or metres and it handles the conversion, so you're not ordering by guesswork.
Pool Volume Calculator
Work out how many gallons or litres a pool holds from its shape and dimensions — rectangular, round, or oval, with average-depth handling for sloped floors — then use the figure to dose chlorine and chemicals correctly. Built for pool owners doing their own upkeep.
Concrete Material Calculator
Estimate the concrete a slab, footing, column, or set of steps needs, then break it down into cement, sand, and aggregate quantities — or the number of pre-mix bags — for your chosen mix ratio. Made for anyone pouring concrete who wants to order the right amount once.
Roofing Material Calculator
Turn a roof's area and pitch into roofing squares, then into the shingle bundles and underlayment rolls you'll need, with a waste factor built in. Useful for homeowners pricing a re-roof and contractors putting together a materials list.
Stair Calculator
Work out a staircase to code from the total rise and run — the number of steps, each step's rise and going, the stringer length, and the headroom — with a diagram to check against. Built for carpenters, deck builders, and DIYers who need the geometry right the first time.
Construction Calculators
A hub of the material calculators a building project keeps needing — concrete, framing, drywall, paint, flooring, and more — each turning dimensions into quantities to order. A single place for the estimates that otherwise send you hunting across a dozen sites.
Voltage Drop Calculator
Check whether a cable run will drop too much voltage, and size the conductor correctly, from the current, distance, and material — with both NEC and IEC methods and copper or aluminium. Built for electricians and anyone wiring a long run who needs the gauge right.
Solar Battery Bank Calculator
Size an off-grid battery bank from your daily energy use, the days of autonomy you want, and the depth of discharge your batteries allow — with presets for lead-acid and lithium chemistries. Made for solar and off-grid setups where undersizing means the lights go out.
Backup Power Calculator
Estimate how long a UPS or generator will keep your load running from the wattage and the battery or fuel capacity — and size the backup you'd need for a target runtime. Useful for home offices, server racks, and anyone planning ahead for an outage.
Cooking Measurement Converter
Convert between the units recipes love to mix — cups, grams, ounces, millilitres, tablespoons — with ingredient-aware conversions, because a cup of flour and a cup of sugar don't weigh the same. Scales a recipe up or down while you're at it.
Number to Words
Spell a number out in words — for cheques, invoices, contracts, and any document that needs the amount written in full — with currency wording and support for large numbers across different numbering systems. The tool you reach for when “one thousand two hundred fifty” has to be exact.
PDF Tools
A kit for the everyday PDF jobs — merge several files into one, split or extract pages, compress a bloated file, convert to and from other formats, and rotate — all in the browser with nothing uploaded to a server. Handy when you just need to reshape a PDF and move on.
Color Code Kit
Pick a color and get it in every format you need — HEX, RGB, HSL, CMYK — build palettes, check contrast for accessibility, and copy ready-to-paste CSS. Built for designers and developers who keep converting the same color between notations.
Barcode & QR Generator
Generate a QR code or a retail barcode — Code 128, EAN, UPC, and more — from your text or number, then download it as a crisp PNG or a scalable SVG for print, packaging, or labels. Made for anyone who needs a scannable code without an app or account.
Internet Speed Test
Measure your connection's real download and upload speed, plus ping and jitter, straight from the browser — no app, no plugin. Quick enough to run whenever a video buffers or a call drops, so you can tell whether it's the connection or something else.
What Is My IP
See the public IP address the internet sees you as — both IPv4 and IPv6 — along with your ISP, approximate location, and the request headers your browser is sending. Useful for troubleshooting, checking a VPN is working, or confirming what a remote server actually receives.
WHOIS Lookup
Look up who's behind a domain — registrar, registration and expiry dates, name servers, and status — plus its DNS records, all from one search. Handy for checking whether a name is taken, when one expires, or where a domain is pointed.
Have a free tool you'd like to see linked here, or a suggestion for a new one? Get in touch.