Another week, another absurd amount of shipping.
Forty new tools. Eight blog posts. A quantum circuit simulator. Yes, quantum. If last week was big, this one was ridiculous. Get comfortable.
Health & Wellness (ten new)
Someone asked for a calorie calculator. I ended up building an entire health suite. That's how I work.
- TDEE Calculator — total daily energy expenditure based on activity, age, weight, and goal. Try it →
- Calories Burned — 80+ activities with precise MET calculation. Try it →
- Keto Calculator — personalized ketogenic macros based on your profile. Try it →
- Macro Calculator — macronutrient distribution for any goal. Try it →
- Intermittent Fasting Timer — fasting windows with real-time metabolic insights. Try it →
- Sleep Cycle Calculator — optimal bedtimes based on 90-minute cycles. Try it →
- Stress Level (PSS-10) — the scientifically validated perceived stress test. Answer 10 questions, get your real level. Try it →
- BAC Calculator — estimates blood alcohol content using the Watson formula. Try it →
- Pregnancy Due Date — estimated date from last period, conception, or ultrasound. Try it →
- Waist-to-Hip Ratio — WHO risk classification from two measurements. Try it →
Everyday Calculators (nine new)
All those calculators you Google, land on an ad-filled page, and end up pulling out your phone anyway. Now they're all in one place, ad-free.
- Paint Calculator — square meters, coats, can coverage. Try it →
- Tile Calculator — surface area, waste, and exact tile count. Try it →
- Square Footage — calculate the area of any shape. Try it →
- Road Trip Cost — distance, consumption, and fuel price. Try it →
- Solar Panel Calculator — how many panels you need based on usage and location. Try it →
- Battery Life — estimate device battery duration based on usage. Try it →
- Recipe Scaler — adjust any recipe's ingredients to your number of servings. Try it →
- Grade Calculator — weighted average for any grading system. Try it →
- Time Card Calculator — log clock-ins and clock-outs, calculate total and overtime hours. Try it →
Security & Cryptography (three new)
Last week we added classic ciphers. This week, the real ones.
- AES Encryption — AES-256 symmetric encryption in the browser. Encrypt and decrypt text with a key. Try it →
- BCrypt Hash Generator — generate and verify bcrypt hashes with configurable salt rounds. Try it →
- RSA Key Generator — generate 2048 or 4096-bit RSA key pairs. Try it →
Design & CSS (three new)
- CSS Grid Generator — visual grid editor with clean CSS export. Try it →
- CSS Clip-Path Maker — draw clip-path shapes with real-time preview. Try it →
- Interactive Flexbox Guide — learn flexbox by tweaking controls and seeing instant results. Try it →
SAP Hybris Impex (seven new)
Niche, I know. But if you work with SAP Hybris, you know there isn't a single decent Impex tool out there. Now there are seven.
- CSV to Impex / Impex to CSV — convert in both directions. Try it →
- Impex to JSON / JSON to Impex — for API integrations. Try it →
- Impex to SQL — generates INSERT/UPDATE statements from Impex. Try it →
- Impex Macro Expander — expands $variable macros so you can see the actual Impex. Try it →
- Impex Table Editor — edit Impex data like a spreadsheet. Try it →
Agile & Productivity
- Eisenhower Matrix — drag tasks across the four quadrants (urgent/important) with subtask support and local persistence. Try it →
- Standup Timer — per-person timer for daily standups. No more 45-minute standups. Try it →
Documents & More
- PDF to Markdown — extract PDF content to clean Markdown using WASM. Try it →
- PPT Compressor — reduce PowerPoint file size by compressing images. Try it →
- Accessibility Tree Visualizer — inspect the accessibility tree of any HTML. Try it →
- T-Shirt Mockup — upload your design and preview it in 3D on a t-shirt with rotation. Try it →
- Texture Preview — GPU texture viewer (KTX2/DDS) right in the browser. Try it →
Improvements
- Pomodoro — now syncs with your keyboard's Play/Pause media keys. Pause the music and the timer stops too.
- Caffeine Calculator — fixed a bug where the safe-for-sleep calculation ignored post-dip caffeine spikes.
From the Blog
Eight new posts. Some are technical, some are stories with a tool attached.
- I Ran a Neural Network in a Browser Tab to Split a Song into Stems — local AI audio separation.
- I Stopped Installing Qiskit to Understand Hadamard Gates — the quantum simulator explained.
- I Tracked My To-Do List for 30 Days. 73% of My 'Urgent' Work Was Someone Else's Emergency. — Eisenhower Matrix in practice.
- I Stopped Using YouTube for Focus Music and My Pomodoro Sessions Got 10x Better
- Your Age Isn't a Number; It's a Vector — the exact age calculator.
- SAP Hybris Impex When None of Us on the Team Can Read It
- I Was Paying Anthropic to Read CSS Class Names — HTML to Markdown for LLMs.
- WSJF, Cost of Delay and Why Your Loudest Stakeholder Keeps Winning the Backlog Argument
By the Numbers
435+ tools across 24 categories. Everything runs in your browser. Everything stays on your device.
What's Next
Receipt Generator, NDA Generator, Contract Generator, Quote/Estimate Generator. Same philosophy: form data, live preview, clean PDF.
Got a tool idea? Reply and suggest it. I build what you ask for.
— Aral