About MacroThrift

MacroThrift answers a question no other macro tool does: what is the cheapest way to hit your protein and calorie targets? We join public nutrition data to grocery prices and rank foods by cost per gram of protein - so you can eat your macros without overspending.

Where the numbers come from

Nutrition figures are based on the USDA FoodData Central database, so they are real. Grocery prices are representative US estimates that we maintain, not live per-store prices, because there is no free, reliable feed of real-time grocery prices. Treat the costs as an honest baseline for comparing foods, then adjust for your area. Every calculation runs in your browser, and the whole dataset is downloadable CC-BY so you can check it or swap in your local prices.

Not medical advice

MacroThrift is an educational tool for planning grocery cost against macro targets. It is not medical, dietary, or nutritional advice. Consult a qualified professional before making significant changes to your diet.

How we're funded

The site is free. Some outbound links (e.g. to meal-plan services) are affiliate links, and we run display ads. This never changes the numbers we compute. See our privacy policy. Questions? hello@macrothrift.com.