Choose servings
Enter the original and target servings to calculate one clear ratio.
Recipe Ratio ConverterRiver Apps · iPhone · US$0.99
Scale a complete recipe without doing kitchen math.
Change the serving count, keep exact fractions, convert compatible units, and share the result from one offline-first workspace.
Save a complete recipe
A closer look.
Screens from the App Store listing. iOS 16.4 or later.
What it does
One ratio across the whole recipe.
Keep exact fractions
Use decimals, fractions, or mixed numbers for ingredient amounts.
Convert compatible units
Convert supported volume, weight, and temperature units when useful.
Save and share
Keep recipes locally and share the currently displayed result through iOS.
Private and offline-first
One purchase. No account or subscription.
Recipe Ratio Converter is a US$0.99 paid download with no in-app purchases, subscriptions, or ads. Recipe and settings data stay on the device unless you explicitly use an iOS share action.
A few things to know.
Does changing servings change oven temperature?
No. Serving changes scale ingredient amounts, not oven or storage temperature.
Can it turn any volume into weight?
Only compatible units can be converted. Volume and weight are not interchangeable without an ingredient-specific density.
Where are recipes saved?
Recipes and settings stay on your device unless you choose an iOS share action.
Recipe Ratio Converter
Available · Version 1.0.1. US$0.99 in the US store. Local pricing may vary.