About DietDeck

DietDeck is a collection of free diet and nutrition calculators — calories, macros, BMI, keto, fasting and daily targets. We built it because most nutrition sites bury simple math behind popups and sign-up walls. DietDeck is the opposite: fast pages, clean interface, instant results.

Every calculation happens locally in your browser — your numbers never leave your device. We don't require accounts, we don't store inputs, and the site is supported by unobtrusive ads.

Part of the Deck family: FreeDeck (free games), PromoDeck (coupon codes) and ToolDeck (free calculators & converters).