Use the values on your label
Enter a reference amount and its nutrition from a package label or a source you trust. Leave a nutrient blank when you don't know it. The app marks that result incomplete.
Your recipes, saved for next time
Weigh your portion.
See the estimate.
Save your ingredients and recipes. Enter the finished batch weight, then calculate nutrition for the portion you actually put on your plate.
See a worked portion example →Use on a desktop or laptop with a current Chrome, Edge, Firefox, or Safari browser. Download the ZIP, unzip it, and open START-HERE.html. The app then works offline.
A portion doesn't have to be an equal serving.
Enter the weight of the finished recipe and choose a portion in grams or ounces. The app works out its share of the recipe's nutrition.
A 130 g portion from a 650 g batch
The fictional example, open in the app.
This 130 g portion has an estimated 206 kcal using the fictional ingredient values.
The ingredient values are made up to show the method. The estimate assumes all entered nutrients remain in the finished batch.
Read the inputs and calculation →
Keep the recipes you come back to.
Start with a blank workspace or explore the fictional example. Your ingredient library carries through to every recipe that uses it.
Save the whole recipe
Add ingredient quantities, a serving count if useful, and a measured finished weight. Update a shared ingredient once and the recipes that use it recalculate.
Choose what you'll prepare
Set portion weights and counts across saved recipes. See planned nutrition, whole batches to make, and an ingredient prep list, with extra batch yield shown separately.
Keep an editable copy
Export a complete backup and import it when you move computers. Use CSV reports and print views for recipe nutrition and your prep plan.
What you'll download
- The offline Recipe Portion Studio app.
- A start page and a short setup guide.
- A clearly labeled, editable example.
- Backup, CSV export, and print tools inside the app.
Bring your labels and a scale.
You'll need ingredient quantities, nutrition reference values, and the measured weight of a finished batch. There isn't a food database or a live nutrition lookup inside this app.
Keep the units compatible with your source. The app converts grams to ounces, for example, but doesn't guess how many grams are in a cup.
Browser storage is a convenience, not a backup. Export a backup after important changes and keep it somewhere you trust.
Before you buy
How this differs from the free calculator
The free recipe nutrition calculator remains free. Recipe Portion Studio adds your own saved ingredient library and recipes, measured batch weights, chosen portions, a multi-recipe prep plan, and editable backups. It uses the reference values you enter.
Using the app offline
Download and unzip the folder on a desktop or laptop, then open START-HERE.html in a current Chrome, Edge, Firefox, or Safari browser. Keep the folder's files together. You need an internet connection for checkout and the download, but not to use the app afterward.
Accounts, subscriptions, and your data
There's no product account or recurring charge. Your recipes stay in the browser workspace on your device unless you export or share them yourself. They don't sync between devices. Read the privacy notice.
What the nutrition estimate assumes
The method assumes all entered ingredient nutrients remain in the finished batch. It doesn't account for discarded cooking liquid, drained fat, uneaten bones, or nutrient changes during cooking. Use reference values that match your ingredients' preparation state. Results are arithmetic estimates, not lab measurements or medical advice.
Help and refunds
Email [email protected] for download or product help. If it isn't a fit, request a refund within 14 days of purchase using your checkout email or receipt. Read the purchase terms.
Save the recipe.
Choose the portion.
Build a library you can return to, with your own ingredients and the weights you measure.
Questions about the download? [email protected]
$19 USD · One payment
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