898+ free online tools for websites, content, images, code and everyday work.

The checks we built for real website work: speed and PageSpeed diagnostics, meta and SERP previews, schema, redirects, security headers, a Dubai project cost estimate and a full live audit. Free to run; the audit asks for contact details so the team can follow up.

Write, clean and shape text: count words, change case, build slugs, sort lines, repeat text and draft starter policies and disclaimers. Paste, run, copy.

Resize, crop, rotate, flip and convert images in your browser — including JPG, PNG, WebP, BMP, GIF and ICO — and encode images to Base64. No account, no sign-up.

Quick answers for everyday numbers: age, percentages, averages, margins, discounts, loans, tax and ad costs. Type the numbers in and read the result.

General converters for length, weight, area, volume, temperature, time, speed, digital storage, pressure, power, energy and more — plus currency, numbers to words, and Roman numerals.

Convert between text, binary, hex, octal, decimal and ASCII in either direction. Paste, convert, copy.

Everyday webmaster helpers: encode and decode HTML and URLs, beautify or minify HTML, CSS and JavaScript, build UTM links, make QR codes, parse URLs and generate UUIDs.

Work with JSON, XML, CSV and TSV: format, validate, edit, minify and convert between them. Paste your data and get a clean result.

Useful one-offs: check your IP, look an IP up, hash text with MD5, encode or decode Base64, convert colours, generate passwords, convert subtitles and grab a YouTube thumbnail.

Convert metres, feet, inches, miles and other length units.

Convert kilograms, pounds, stones, ounces and other weight units.

Convert square metres, acres, hectares and other area units.

Convert litres, gallons, cups, millilitres and other volume units.

Metres per second, kilometres per hour, miles per hour, knots and feet per second, in every direction, with the exact factor shown on each page.

Convert bytes, kilobytes, megabytes, gigabytes and terabytes.

Convert seconds, minutes, hours, days and weeks.

Work out mortgages, loans, interest, tax and everyday money questions.

Check BMI, calories, heart-rate zones and other everyday health numbers.

Solve percentages, averages, algebra, geometry and everyday maths.

Count days, add business days, convert time zones and plan dates.

Count, convert, sort and clean text directly in your browser.

Convert, resize, compress and inspect images without installing software.

Encode, format, test and generate code, data and credentials.

Check and generate the SEO basics for a page or a site.

Convert between everyday units quickly and accurately.

Generate passwords, names, numbers and random picks.

Everyday business helpers: invoices, quotes, planners and lists.

Convert colours, build palettes and check contrast for designs.

Merge, split, compress, rotate and edit PDF files in your browser — extract text, add page numbers and turn JPGs into PDFs.

Work out Ohms law, power, force, energy, density, pH, pendulum period and wavelength.

Convert cups to grams, oven temperatures and yeast amounts; scale portions, pasta, rice and cake pans.

Weighted grades, GPA, flashcards, citations, times tables and study planning.

Check card numbers, IBANs, emails and phone numbers; look up ports, convert IPv4 addresses and hash files.

Trim audio, boost volume, record your voice, keep time with a metronome and play pure tones.