Diet cost comparison.

Diet cost comparison calculator compares food spending across diet types. Standard diet 80/week vs Mediterranean 100/week vs vegetarian 60/week vs vegan 55/week. Significant lifetime cost differences - 25/week × 52 weeks × 50 years = 65,000 lifetime difference. Diet choice major financial as well as health decision.

Example: Diet A (standard) 80/week vs Diet B (vegan) 55/week = 25/week difference. Annual savings 1,300. Over 50 years (adult life): 65,000 saved. Plus health impacts (vegan/vegetarian diets associated with reduced cardiovascular disease, lower BMI, cancer risk reduction). Combined financial + health value: significant.

Diet cost rankings (weekly per adult): vegan 40-60 (cheapest), vegetarian 50-70, standard omnivore 70-100, pescatarian 80-110, ketogenic 90-130, paleo 100-140, organic premium 150+. Cost drivers: meat (most expensive macronutrient per calorie), processed convenience foods, dining out frequency, organic premium (30-50% more), supplements (30-100/month if heavy user). Cheapest healthy approach: home-cooked plant-forward with occasional meat. Most expensive: premium organic + restaurants. Track for 1 month to know real spending.

Run it with sensible defaults

Using diet a weekly cost of 80, diet b weekly cost of 55, weeks following diet of 52, the calculation works out to 1,300.00. Nudge the inputs toward your own situation and the output recalculates instantly. The defaults are meant as a starting point, not a recommendation.

The levers in this calculation

The inputs — Diet A Weekly Cost, Diet B Weekly Cost, and Weeks Following Diet — do not pull with equal force. Two inputs usually tip the answer one way or the other. Identify which ones matter most by flipping each value past a round threshold and watching whether the winning option changes.

How the math works

Total difference = (Diet A weekly - Diet B weekly) × weeks. The working is transparent — you can verify every step yourself in the formula section below. No black box, no opaque "proprietary model".

When to actually change the habit

Most lifestyle spending delivers real value. The exceptions are the ones that stopped delivering months ago but got auto-renewed anyway, and the ones chosen out of defaults rather than preference. Run this, then audit for those two categories — that's where the easy wins live.

What this doesn't capture

The tool prices the money; it can't weigh the enjoyment. A coffee habit, gym membership, or streaming bundle might cost what the math says but deliver value that's harder to quantify. Use the number to make the trade-off visible — the decision is yours.