Recipe Scaler (Ratio Preserving)
Enter a recipe and scale it up or down while preserving ratios. Handles awkward fractions gracefully — no '0.37 eggs'.
Cook Professionally with The Chef's Knife
Kitchen maths and references — no app required
You need to cook professionally. Kitchen tools that work without Wi-Fi. The Chef's Knife delivers 5 purpose-built tools in a single HTML file.
The Chef's Knife puts five essential kitchen utilities into a single HTML file. Scale recipes while preserving ratios, convert between culinary units, run multiple timers simultaneously, look up ingredient substitutions, and estimate nutrition from USDA data — all offline and splashproof on your tablet.
WHAT'S INSIDE
5 tools in a single HTML file
Culinary Unit Converter
Convert between cups, tablespoons, teaspoons, millilitres, grams, ounces, and more. Includes ingredient-specific weight conversions (flour vs sugar vs butter).
Timer Bank (Multiple Simultaneous)
Run multiple named timers at once — one for the roast, one for the sauce, one for the bread. Audio alerts and visual countdowns.
Ingredient Substitution Reference
Look up substitutions for common ingredients — out of buttermilk? Use milk + vinegar. Searchable by ingredient with ratio adjustments.
HOW IT WORKS
Three steps. No setup.
1
Download the file
Purchase The Chef's Knife and download a single HTML file. No installer, no account, no setup.
2
Open in any browser
Double-click to open in Chrome, Firefox, Safari, or Edge. Works on any operating system.
3
Start working
Your data stays in your browser's local storage. Nothing is uploaded. Ever.
COMPLIANCE & GEOGRAPHY
Global
Works in any country. No server dependency, no regional restrictions.
FAQ
Frequently Asked Questions
How does The Chef's Knife help me cook professionally?
The Chef's Knife provides 5 interconnected tools for kitchen tools that work without wi-fi. Recipe scaler, culinary unit converter, multiple simultaneous timers, substitution reference, and nutrition estimator. Your sous chef in a file.
Do I need an internet connection to cook professionally with The Chef's Knife?
No. The Chef's Knife runs entirely in your browser as a single HTML file. All 5 tools work offline.
What is the difference between The Chef's Knife and cloud-based alternatives?
Cloud tools store your data on external servers, require subscriptions, and stop working without internet. The Chef's Knife is a one-time purchase ($39) that runs locally. Your data never leaves your device.
Can I use The Chef's Knife on multiple devices?
Yes. Once purchased, you can use The Chef's Knife on any device with a web browser. Copy the HTML file to as many devices as you need.
No cloud One fileOne-time purchase
Get The Chef's Knife — $39Sovereignty as a Service