Calculator
A keyboard-friendly calculator with a running history.
Calculators & Converters
SIA collects the calculators, converters and generators you keep searching for into one fast, free workspace. No accounts, no adverts, no limits.
Most used
The tools people reach for most often.
A keyboard-friendly calculator with a running history.
Calculators & Converters
Convert length, mass, temperature, data and more.
Calculators & Converters
Convert between 160+ currencies at today's mid-market rate.
Calculators & Converters
Monthly payments, total interest and a full amortisation schedule.
Calculators & Converters
A focused task list that stays on your device.
Productivity & Time
Track the time across as many cities as you need.
Productivity & Time
Counts, reading time and readability, live as you type.
Text & Writing
Compare two texts and see exactly what changed.
Text & Writing
Translate text into more than 100 languages.
Text & Writing
Shrink JPG, PNG, WebP and AVIF files without visible loss.
Images & Media
Format, minify and validate JSON with a browsable tree.
Developer Tools
Test regular expressions with live highlighting and groups.
Developer Tools
Generate strong passwords with a live strength estimate.
Generators
Create customisable QR codes and download them as PNG or SVG.
Generators
A quote for whatever you need right now.
Fun & Games
Every tool opens straight into a working state. No sign-up, no install, no paywall.
Most tools run entirely in your browser. Your files and text never leave your device.
The same keyboard shortcuts, layout and behaviour across every tool in the collection.
Calculators & Converters
A keyboard-friendly calculator with a running history.
Six percentage questions, answered with the working shown.
Convert length, mass, temperature, data and more.
Convert between 160+ currencies at today's mid-market rate.
Productivity & Time
A focused task list that stays on your device.
Focus sessions and breaks, with a count of what you finished.
A precise stopwatch with lap times.
Count down to zero with a visual progress ring.
Text & Writing
Counts, reading time and readability, live as you type.
Fourteen cases at once — camel, snake, kebab, title and more.
Compare two texts and see exactly what changed.
Sort, dedupe and clean up any list of lines.
Images & Media
Shrink JPG, PNG, WebP and AVIF files without visible loss.
Resize images to any size, entirely on your device.
Convert between JPG, PNG, WebP and AVIF.
Crop, rotate and tune images right in the browser.
Developer Tools
Format, minify and validate JSON with a browsable tree.
Test regular expressions with live highlighting and groups.
Convert CSV to JSON and back, with a live preview table.
Encode and decode Base64 text, files and data URLs.
Generators
Generate v4, v7 and v5 UUIDs, and inspect existing ones.
Generate strong passwords with a live strength estimate.
Create customisable QR codes and download them as PNG or SVG.
Build palettes and copy colours in HEX, RGB, HSL or OKLCH.
Fun & Games
A quote for whatever you need right now.
Play a friend or take on the computer.
SIA is open source and growing. Tell us what would make your day easier and it might be next.