8 Free Tools

Carnivore Diet Tools & Calculators

Science-backed calculators built specifically for the carnivore diet. From electrolytes to protein targets — get precise answers in seconds. No signup. No cost.

Free forever. No account required. Works on any device.
All Tools
Most Popular
Electrolyte Calculator
Get your personalized daily sodium, potassium, and magnesium targets based on weight, activity, climate, and adaptation stage.
Protein Calculator
Calculate your ideal daily protein intake for muscle retention, fat loss, or performance — calibrated for the carnivore diet.
Fat:Protein Ratio
Enter fat and protein grams to instantly see your fat energy percentage. Check if you are hitting the optimal 70–80% fat energy zone.
Fasting Timer
Track your intermittent fast with a live countdown. Shows biological milestones — autophagy onset, fat adaptation, and ketone peaks — as time progresses.
Vitamin D Calculator
Estimate your daily vitamin D needs based on latitude, skin tone, sun exposure, and supplementation — calibrated for carnivore metabolic context.
Meat Nutrition Compare
Side-by-side nutrition comparison for beef, pork, lamb, chicken, salmon, and more. See protein, fat, and micronutrient density at a glance.
Organ Meat Guide
Interactive guide to liver, heart, kidney, and more. Learn the nutrient profile of each organ and how to incorporate nose-to-tail eating.
Transition Checklist
Step-by-step checklist for switching to the carnivore diet. Covers electrolytes, meal timing, common mistakes, and week-by-week expectations.
Go deeper

Track Everything Automatically in the App

These calculators give you snapshots. The CarnivOS app tracks your nutrition daily, auto-calculates your electrolyte needs from your food log, and alerts you before deficiencies hit.

Download CarnivOS
iOS & Android. 30-day money-back guarantee.
Why These Tools

Built for carnivore — not generic low-carb

Every formula accounts for the specific metabolic state of a fat-adapted carnivore diet: elevated electrolyte excretion, higher protein efficiency, and zero-carb insulin dynamics.

Science-backed, no fluff

Calculations are grounded in published nutritional research. Sources include peer-reviewed studies on renal electrolyte handling, protein turnover rates, and fat oxidation.

Free, no account required

All 8 tools run entirely in your browser. No login, no email, no tracking. Your inputs never leave your device.

Instant, personalized results

Enter your stats once and get results calibrated to your body weight, activity level, goals, and how long you have been on the carnivore diet.