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InstantTools

Utilities Tools

The everything-else drawer, done properly: developer utilities (JSON, JWT, SQL, regex, hashes, cron), financial calculators (mortgage, salary, compound interest, retirement), color and design tools, timers and world clocks, and a few genuinely good games. Fifty-plus single-purpose tools, each one loading instantly and running locally.

Password Generator
Generate highly secure, random passwords directly in your browser.
QR Code Generator
Generate static QR codes for URLs, plain text, WiFi credentials, vCards, and email — exportable as PNG or SVG with custom colors and logo overlay.
Salary Calculator
Convert pay between hourly, weekly, monthly, and annual — adjusted for your real work schedule.
Hourly to Salary Calculator
Convert an hourly wage to its annual salary equivalent — with real hours and weeks, not assumptions.
Salary to Hourly Calculator
Break an annual salary down to its true hourly rate — adjusted for the hours you actually work.
Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes from text or files — locally.
Cron Expression Parser
Decode any cron expression into plain English and preview its next run times.
SQL Formatter
Format and beautify SQL queries for 7 dialects — indentation, keyword casing, all in-browser.
JSON Formatter
Beautify, minify, and validate JSON data instantly.
HEX ↔ RGB Converter
Convert between HEX, RGB, RGBA, HSL, HSLA, and OKLCH color formats with a live swatch, alpha slider, and CSS-ready output.
SVG Optimizer
Clean up and minify SVG files for web use.
JWT Decoder
Decode and inspect JSON Web Tokens entirely within your browser.
CSV to JSON Converter
Convert raw CSV data into formatted JSON arrays instantly.
World Clock
A 3D globe-based observatory for tracking multiple time zones. View simultaneous times across continents, scrub through projected times, and explore temporal shifts across meridians.
Timezone Converter
A lockstep timezone converter for planning meetings across continents. Drag a cursor through the day and watch every participant's local time shift in unison. Working hours glow, nights fade — meeting windows become obvious without arithmetic.
Countdown Timer
A full-screen countdown built for launches, demos, and deep work. A gradient progress ring closes as the seconds tick, and a soft three-note chime marks touchdown. Keyboard-first controls, URL-shareable presets, and a quiet, chronos-palette canvas that stays out of your way.
Pomodoro Studio
A pomodoro that respects your focus. Three modes (focus / short break / long break) rotate through a cycle meter; ambient color shifts mark the transition and a gentle chime says "landed". No desktop notifications, no guilt trips — just a quiet session log and a pause key that actually works.
Dice Roller
A 3D dice console for tabletop and decision-making. Roll d4–d100 with modifiers, advantage, disadvantage, and 4d6-drop-lowest presets — with a telemetry log that tracks your session.
Distance Arc
Great-circle distance between any two cities, drawn as a cyan arc across a dark editorial map. Type two place names, see the precise distance in kilometers and miles, plus bearing and midpoint.
Compass Weather
A current-conditions observatory with an animated hero gradient, hourly scroller, and 10-day outlook. Powered by Open-Meteo — free, global, no account required.
Compass Weather Radar
Animated precipitation radar across a dark editorial map. RainViewer tiles overlaid on MapLibre at 60% opacity, with a 2-hour history scrubber.
Coordinate Converter
DMS ↔ decimal ↔ UTM ↔ MGRS, paste any format and get the others.
Unit Converter
Length, area, volume, mass, temperature, pressure, speed — with smart input parsing and SI defaults.
Compass Heading
Bearing between two points, magnetic declination, and a live compass for mobile.
Freelance Rate Calculator
Work out the hourly and day rate you actually need to charge — from your target income, real expenses, taxes, and the billable hours you truly have.
CIDR / Subnet Calculator
Enter an IP and prefix (e.g. 192.168.1.0/24) and get the network address, broadcast, usable host range, masks, and binary breakdown — instantly, offline.
Typography Scale Generator
Generate a harmonious type scale from a base size and a musical ratio — with live preview and exportable CSS variables, including fluid clamp() values.
Aspect Ratio Calculator
Scale any width × height to new dimensions without distortion — with the simplified ratio, common presets, and a live shape preview.
Mortgage Calculator
A mortgage calculator with the math showing. Every monthly payment is a row on a parchment ledger — PITI breakdown, full amortization schedule, extra-principal what-ifs, and a rate sensitivity strip that shows what a quarter point actually costs.
Loan Calculator
A loan calculator with the math showing. Auto, personal, or student — enter the amount, rate, and term, then optionally add extra principal to see what you’d save in interest and how many months you’d shave off.
Compound Interest Calculator
A compound interest calculator with the math showing. Project an investment forward with monthly contributions, watch the balance climb on an inline sparkline, audit every year in a parchment ledger, and flip the inflation toggle to read the final number in today’s dollars.
Retirement Calculator
A retirement calculator with the math showing. Project your nest egg to retirement, then see the safe annual income your portfolio can support — in today’s dollars — along with a year-by-year drawdown schedule that tells you exactly when the money runs out.
Rent vs Buy Calculator
A rent vs buy calculator that runs both paths side-by-side. Owning (mortgage + taxes + maintenance + appreciation − equity) and renting + investing the down payment (portfolio growth − capital gains). A clear break-even year — or the verdict that buying doesn’t beat renting at this horizon.
Coin Flipper
A weighted coin flipper with a bias slider, streak tracker, and running tally. Flip once or a thousand times; the ledger keeps score.
Random Number Studio
Draw integers from any range with optional uniqueness, sorting, and a reproducible seed. Copy the list in one tap.
Probability Calculator
Binomial, dice-sum, and combinatorics in one calculator — with the formulas shown so you learn as you solve.
Color Forge
Pick a hue and forge a full tonal scale (50–950), harmony palettes, and exportable CSS custom properties.
Gradient Studio
Design multi-stop linear and radial CSS gradients with live preview and one-click CSS copy.
Token Converter
Round-trip design tokens between units (px, rem, em, pt, %) and color formats (HEX, RGB, HSL).
Regex Workbench
Live regex tester with flags, highlighted matches, capture group inspection, and replacement preview.
The Alchemist
A word unscrambler that brews every valid word from the letters you drop into the vessel. Scrabble-scored, sorted long to short.
The Scholar
A word analyzer — letter breakdown, Scrabble score, syllable estimate, palindrome test, and anagram matches from the built-in lexicon.
The Voyager
A spelling-bee-style letter dial. Seven letters; every word must use the center letter. Pangrams use all seven.
GEO / AI Visibility Checker
Score your content for AI search citability. Get dimension scores for answer structure, citation-worthiness, scannability, authority signals, and semantic clarity.
Schema Generator
Generate valid JSON-LD schema markup for Article, FAQ, Product, HowTo, LocalBusiness, Event, and Recipe. Instant, no account needed.
Meta Description Generator
Generate three click-worthy meta description variants, each optimised for the 145–160 character window that Google displays.
Alt Text Generator
Generate WCAG-compliant alt text in three length variants (short, medium, long) from any image. Drop an image, get copy-ready descriptions.
Title Tag Optimizer
Generate five title tag variants that fit Google's 60-character display window, with visual SERP indicator per result.
FAQ Generator
Generate PAA-ready question-and-answer pairs for any topic. Choose count (3–15), target audience, and copy all as Markdown.
AI Keyword Extractor
Extract the most relevant keywords from any text using TF-IDF analysis. Pure JavaScript, no model download required.
AI Schema Generator
Generate JSON-LD structured data (Article, Product, BreadcrumbList, FAQPage) from simple inputs. Template-based, no AI model needed.
AI Text Summarizer
Summarize long text into 2–4 concise sentences using a local AI model that runs entirely in your browser. First use downloads a ~100 MB model; subsequent uses are instant.
AI Meta Description Generator
Generate an SEO-optimized meta description (≤155 characters) from any content using a local AI model. Runs in-browser, no data sent anywhere.
AI Blog Title Generator
Generate 3–5 blog title candidates from your content or topic using a local AI model. Runs entirely in-browser.
AI Product Description Generator
Turn a feature list into 2–3 sentences of marketing copy using a local AI model. Runs in your browser — no data sent anywhere.
AI Content Rewriter
Rewrite text to express the same ideas with fresh wording. Uses a local AI model — your content stays on your device.

Which Utilities Tool Do I Need?

Debug structured dataJSON Formatter →

Format or minify JSON — and its neighbors decode JWTs, convert CSV to JSON, and format SQL. Safe for tokens and production data precisely because nothing is transmitted.

Generate credentials and codesPassword Generator →

Cryptographically random passwords to your length/symbol spec, generated on-device. The QR Code Generator does the same for links and Wi-Fi credentials.

Run the numbers on a big decisionMortgage Calculator →

Principal, rate, taxes, insurance — plus siblings for loans, compound interest, retirement, rent-vs-buy, and salary conversions.

Understand a cron scheduleCron Expression Parser →

Translates expressions like */15 9-17 * * 1-5 into plain English and shows the next five run times.

Work with color like a designerColor Forge →

Tonal scales, harmony palettes, and exportable CSS tokens — with HEX↔RGB conversion and a gradient studio alongside.

Coordinate across time zonesWorld Clock →

Cities orbiting a real 3D globe, plus a timezone converter and countdown timers.

Why These Tools Run in Your Browser

Developer utilities are the classic case for local processing: the things developers paste — JWTs, connection strings, API responses, customer data in a CSV — are exactly the things that should never be pasted into a random website that processes them server-side. Every utility here computes in your tab. The financial calculators share the same property: your income, mortgage numbers, and retirement plans are inputs to a formula on your device, not a lead-generation form.

Don’t take the privacy claim on faith — we published a network-level verification in the Privacy Audit and measured processing speed in the Speed Benchmark.

Frequently Asked Questions

Is it safe to paste a production JWT or API response here?

That's the design goal: decoding and formatting happen in your browser's memory with zero network transmission, which you can verify live in the network tab. We published exactly that verification — pasting a token and diffing the request log — in our Privacy Audit.

How accurate are the financial calculators?

They implement the standard formulas (amortization, compound interest, future value) and show their work — the mortgage calculator breaks out principal, interest, taxes, and insurance line by line. They're planning tools, not financial advice; lender quotes will differ by fees and rate specifics.

Are the passwords from the generator really random?

They're generated with the Web Crypto API (crypto.getRandomValues), the browser's cryptographically secure source — not Math.random(). Generation happens on your device, and no generated password is ever transmitted or stored.

Why are there games in a utilities collection?

Because a five-minute brain break beats a doomscroll. The word games (Alchemist, Scholar, The Voyager) and the dice roller follow the same rules as everything else: no account, no tracking, instant load.