Tidy Moss Tools
Tidy Moss is a free platform of self-built calculators for everyday questions about food and movement. Every tool shows its formula, its reference data, a worked example, and the limits of the estimate — so you can check the number instead of trusting it blindly. No account, no sign-up, nothing stored.
Food & Nutrition tools
The largest group answers "how much of X is in this portion?" — calories, carbohydrate, protein, fat, fiber, sodium, potassium, calcium, iron, vitamin C, and sugar for individual foods, measured the way people actually eat them: per 100 g, per gram, per cup, per tablespoon, per slice, per ounce, or per handful. If you are tracking macros, comparing two products, or checking how a serving size changes the total, start here. Weighing portions on a kitchen scale removes most of the guesswork; the per-100 g tools are the most precise starting point, and the per-serving tools match packaging and recipes.
Activity & Movement tools
The second group estimates the energy you burn during ordinary activities — walking, gardening, housework, sports, yoga, swimming, and similar movement — from your body weight, the activity, and how long you did it. These use the standard MET method described on each page. To get the most useful estimate, pick the activity and intensity that genuinely matches your session rather than the one you wish you did; the reference tables on each page describe what each intensity feels like.
Everyday utility tools
A small set of general-purpose tools: exact unit conversions between kilograms, pounds, and stones, and a habit score calculator for reflection on routine consistency. These apply fixed published relationships and involve no estimates.
Choosing between tools
If two tools seem to overlap, they usually differ in the unit they report — per 100 g for precision work, per serving for practical tracking. Pages link to related tools wherever the distinction matters. All food and activity figures are educational estimates based on published averages, not measurements of your body or your food; the Disclaimer and How We Build Tools pages explain the sources and limits in full.