Recipe Scaler (Ratio Preserving)
Enter a recipe and scale it up or down while preserving ratios. Handles awkward fractions gracefully — no '0.37 eggs'.
The Chef's Knife for Chef / Food Professionals
Kitchen maths and references — no app required
Kitchen tools that work without Wi-Fi. The Chef's Knife gives chef / food professionals 5 specialised tools in a single HTML file that runs entirely offline.
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
Why should Chef / Food Professionals use The Chef's Knife?
The Chef's Knife is built for chef / food professionals who need food & kitchen tools without cloud dependencies. Recipe scaler, culinary unit converter, multiple simultaneous timers, substitution reference, and nutrition estimator. Your sous chef in a file.
Does The Chef's Knife work offline?
Yes. The Chef's Knife is a single HTML file that runs entirely in your browser. No internet connection required. Your data never leaves your machine.
Is The Chef's Knife a subscription?
No. The Chef's Knife is a one-time purchase ($39). No monthly fees, no renewals, no price increases.
What tools are included in The Chef's Knife?
The Chef's Knife includes 5 tools: Recipe Scaler (Ratio Preserving), Culinary Unit Converter, Timer Bank (Multiple Simultaneous), Ingredient Substitution Reference, Nutrition Estimator (USDA Lite). All accessible from a single HTML file.
Can I try The Chef's Knife before buying?
Yes. Every product page includes an interactive demo you can try in your browser. No signup required.
No cloud One fileOne-time purchase
Get The Chef's Knife — $39Sovereignty as a Service