Nutrition & Health Calculators

BMI Calculator - Free & Accurate Body Mass Index

Calculate your Body Mass Index instantly with our free BMI calculator. Supports metric and imperial units. See your BMI category, healthy weight range, and personalized health insights.

Body Fat Calculator - US Navy Method Estimate

Calculate your body fat percentage using the US Navy circumference method. Enter your measurements to get body fat %, fat mass, lean mass, and body composition category. Free and accurate.

Ideal Weight Calculator - Find Your Healthy Range

Calculate your ideal body weight using Robinson, Miller, Devine, and Hamwi formulas. Adjust for frame size, compare results across all four methods, and see your healthy weight range instantly.

Metabolic Age Calculator - Find Your True Body Age

Calculate your metabolic age based on BMR analysis. Compare your metabolism to age-group averages and discover if your body is younger or older than your actual age. Free, accurate, science-based tool.

BMR Calculator - Compare 3 Formulas Side by Side

Calculate your Basal Metabolic Rate using Mifflin-St Jeor, Harris-Benedict, and Katch-McArdle formulas. Compare results side by side with a free, accurate BMR calculator.

Calorie Calculator - Find Your Daily Calorie Needs

Calculate exactly how many calories you need per day to lose weight, maintain, or build muscle. Free TDEE-based calorie calculator with timeline projections and daily breakdown.

Calorie Deficit Calculator - Plan Your Weight Loss

Calculate your daily calorie deficit for safe, effective weight loss. Get week-by-week weight projections, safety warnings, and a personalized timeline chart. Free online tool.

Calorie Surplus Calculator - Plan Your Bulk

Calculate your ideal calorie surplus for lean or aggressive bulking. See projected weekly and monthly weight gain, fat gain warnings, and side-by-side comparisons. Free online tool.

Calories Burned Calculator - Track Exercise Energy

Calculate calories burned during any exercise or activity. Uses MET values from the Compendium of Physical Activities for accurate results. Free online tool.

Maintenance Calorie Calculator - Find Your TDEE Range

Calculate your daily maintenance calories with a personalized range. Uses the Mifflin-St Jeor equation to find the exact calorie window to maintain your current weight. Free and accurate.

TDEE Calculator - Find Your Daily Calorie Needs

Calculate your Total Daily Energy Expenditure based on the Mifflin-St Jeor equation. Get BMR, TDEE, macro splits, and calorie targets for weight loss, maintenance, and bulking. Free online tool.

Macro Calculator - Protein, Carbs & Fat Split

Calculate your ideal macronutrient split for any diet. Get personalized protein, carbs, and fat targets based on your calories, goals, and diet type. Free online tool.

Net Carbs Calculator - Keto & Low-Carb Friendly

Calculate net carbs instantly by subtracting fiber and sugar alcohols from total carbs. Batch mode for multiple foods, keto-friendly verdict, and common food reference list. Free online tool.

Protein Calculator - Daily Protein Needs by Goal

Calculate your optimal daily protein intake based on body weight, activity level, and fitness goals. Get personalized meal timing and per-meal protein recommendations. Free online tool.

Water Intake Calculator - Daily Hydration Needs

Calculate your daily water intake based on body weight, activity level, and climate. Get personalized hydration recommendations with hourly and bottle equivalents. Free online tool.

Body Recomposition Calculator - Build Muscle & Lose Fat

Calculate your body recomposition calories with training vs rest day cycling. Get personalized protein targets, calorie splits, and a realistic timeline based on your training experience. Free tool.

Bulking Calculator - Lean Bulk Calories & Muscle Gain

Calculate your ideal bulking calories, protein needs, and realistic muscle gain timeline. Compare lean vs aggressive bulk strategies with projected fat gain estimates. Free online tool.

Cutting Calculator - Lose Fat & Keep Muscle

Calculate your optimal cutting calories, protein floor, and rate of fat loss. Get a personalized cutting plan with deficit size, macros, and timeline to reach your target body fat percentage. Free tool.

Goal Weight Calculator - Your Weight Loss Timeline

Calculate exactly when you'll reach your goal weight. Enter your current weight, target weight, and weekly loss rate to get a personalized timeline with milestone dates and a visual calendar.

How Long to Lose Weight Calculator - Free Timeline

Calculate exactly how long it will take to reach your goal weight. Enter your current weight, target weight, and daily calorie deficit to get a personalized weight loss timeline with goal date and weekly milestones.

Weight Gain Calculator - Plan Your Muscle & Mass Goals

Calculate your daily calorie surplus, macro split, and timeline for healthy weight gain. Compare muscle gain vs general weight gain strategies. Free and accurate.

Weight Loss Calculator - Daily Calories & Goal Date

Calculate exactly how many calories to eat daily to reach your goal weight. See your projected weight loss curve, weekly loss rate, and goal date on a visual calendar. Free and accurate.

Weight Loss Percentage Calculator - Track Your Progress

Calculate what percentage of body weight you have lost. See clinical milestones at 5%, 10%, and 15% weight loss with health benefit comparisons. Free and accurate.

GLP-1 Muscle Loss Risk Assessment - Free Tool

Assess your risk of muscle loss on GLP-1 medications like Ozempic, Wegovy, or Mounjaro. Get a personalized risk score, estimated lean mass loss percentage, and an actionable protection plan based on clinical research from STEP trials. Free online tool.

GLP-1 Nutrient Deficiency Risk Checker - Free Quiz

Take this free 10-question quiz to check your risk for vitamin B12, iron, calcium, and vitamin D deficiencies while on GLP-1 medications like Ozempic, Wegovy, or Mounjaro. Get personalized nutrient risk scores, food source recommendations, and supplementation guidance.

GLP-1 Side Effect Food Matcher - What to Eat

Match your GLP-1 side effects to the best foods to eat and avoid. Get personalized food recommendations for nausea, constipation, bloating, fatigue, and more. Free interactive tool.

Ozempic Calorie Calculator - Safe Daily Intake on GLP-1

Calculate your safe daily calorie target while on Ozempic or semaglutide. Uses Mifflin-St Jeor BMR with GLP-1-specific adjustments. Free, evidence-based tool.

Ozempic Cost Calculator - Compare Prices & Savings

Calculate the real cost of Ozempic, Wegovy, Mounjaro, and Zepbound with or without insurance. Compare monthly prices, savings programs, and compounded alternatives. Updated for 2026.

Ozempic Dose Timeline Planner - FDA Schedule

Plan your Ozempic, Wegovy, or Mounjaro dose escalation schedule with FDA-approved timelines. Get week-by-week dose cards, side effect expectations, and a printable calendar. Free tool.

Ozempic Protein Calculator - Prevent Muscle Loss

Calculate your optimal daily protein intake on GLP-1 medications like Ozempic, Wegovy, or Mounjaro. Prevent muscle loss during rapid weight loss with personalized protein targets, meal timing, and nausea-friendly strategies. Free online tool.

Ozempic vs Mounjaro Comparison Tool - Side by Side

Compare Ozempic vs Mounjaro side by side. See projected weight loss, cost, efficacy, and timeline differences based on clinical trial data. Free comparison tool.

Ozempic Weight Loss Calculator - Track Your Progress

Calculate your projected weight loss on Ozempic (semaglutide) by dose tier. Track actual vs projected results with clinical trial data. Free, evidence-based tool.

Post-GLP-1 Weight Maintenance Calculator - Prevent Regain

Calculate your maintenance calories, protein targets, and weight regain risk after stopping Ozempic or other GLP-1 medications. Evidence-based projections at 6, 12, and 24 months.

Semaglutide Meal Planner - GLP-1 Friendly Meals

Plan GLP-1-friendly meals while on semaglutide. Get personalized protein targets, small-portion meal ideas, and foods that minimize nausea. Free online tool.

Calorie Cycling Calculator - Optimize Your Intake

Plan your calorie cycling with high-day and low-day splits. Get training and rest day calories, macro breakdowns, and a visual weekly calendar. Free online tool.

Carb Cycling Calculator - Plan Your Weekly Carbs

Calculate your high, moderate, and low carb days based on bodyweight, training schedule, and goals. Free carb cycling calculator with visual weekly planner.

Carnivore Diet Calculator - Protein & Fat Targets

Calculate your optimal carnivore diet macros based on body weight, activity level, and goals. Get daily protein, fat, and calorie targets with meat quantity equivalents. Free online tool.

Intermittent Fasting Calculator - Plan Your Fasting Window

Calculate your ideal intermittent fasting schedule with eating and fasting windows, meal timing suggestions, and a visual 24-hour clock. Supports 16:8, 18:6, 20:4, OMAD, and 5:2 protocols. Free and easy to use.

Keto Calculator - Find Your Ideal Keto Macros

Calculate your personalized keto macros with the 70/25/5 fat/protein/carb ratio. Get daily fat, protein, and net carbs targets based on your body stats and goals. Free keto macro calculator.

Low-FODMAP Calculator - Identify Your Trigger Foods

Identify FODMAP trigger foods based on your symptoms. Get personalized safe, moderate, and avoid food lists with a traffic light system and 3-phase elimination guide.

Mediterranean Diet Calculator - Daily Meal Plan

Calculate your ideal Mediterranean diet meal plan with personalized macro splits, food group servings, and weekly meal framework. Free calculator for any calorie level.

Paleo Macro Calculator - Grain-Free Macro Split

Calculate your ideal paleo macronutrient targets. Get personalized protein, fat, and paleo carb goals based on your TDEE, body stats, and goals. Excludes grains, dairy, and legumes.

Reverse Dieting Calculator - Restore Your Metabolism

Plan your reverse diet with a personalized weekly calorie increase schedule. Calculate your path from diet calories to maintenance with a custom progression chart. Free online tool.

Vegan Protein Calculator - Plant-Based Daily Needs

Calculate your optimal daily vegan protein intake based on body weight, activity level, and goals. Get complete amino acid combinations, plant protein rankings, and per-meal targets. Free online tool.

BAC Calculator - Estimate Blood Alcohol Content

Calculate your blood alcohol content (BAC) using the Widmark formula. Track drinks, estimate time to sober, compare legal limits, and see total calories consumed. Free online BAC calculator.

Heart Rate Zone Calculator - Train Smarter

Calculate your 5 heart rate training zones using the Karvonen or percentage method. Enter your age and resting heart rate to find fat burn, cardio, and peak zones. Free, accurate, science-based tool.

Life Expectancy Calculator - Impact of Lifestyle

Estimate how your lifestyle choices affect your lifespan. See the impact of smoking, exercise, diet, sleep, BMI, and alcohol on your life expectancy. Free, science-based tool.

Screen Time vs Exercise Calculator - Find Your Balance

Calculate how screen time affects your calorie burn and discover what you could gain by moving more. Free tool with personalized balance score and motivational scenarios.

Sleep Calculator - Find Your Optimal Bedtime

Calculate the best time to sleep and wake up based on 90-minute sleep cycles. Get personalized bedtime and wake-up suggestions for 4, 5, or 6 complete cycles. Free, science-backed sleep tool.

Stress Eating Calculator - Track Emotional Eating Impact

Calculate the calorie impact of stress eating episodes. See weekly, monthly, and yearly calorie surplus from emotional eating plus get non-judgmental tips and mindful eating strategies.

Breastfeeding Calorie Calculator - Daily Needs for Nursing Moms

Calculate your daily calorie needs while breastfeeding. Get personalized TDEE plus lactation calories based on exclusivity and baby age. Free tool with protein and hydration targets.

Menopause Calorie Calculator - Adjusted TDEE for Hormonal Changes

Calculate your daily calorie needs during menopause with metabolic adaptation adjustments. Get personalized TDEE, protein targets, and safe deficit recommendations for perimenopause, menopause, and post-menopause. Free evidence-based tool.

PCOS Macro Calculator - Optimize Your Diet Plan

Calculate PCOS-optimized macros based on your insulin resistance level and goals. Get personalized protein, low-GI carb, and anti-inflammatory fat targets. Free online PCOS diet plan tool.

Period Cycle Nutrition Planner - Eat Right Every Phase

Get personalized nutrition recommendations for every phase of your menstrual cycle. Discover the best foods, key nutrients, and symptom management tips for menstrual, follicular, ovulatory, and luteal phases.

Postpartum Calorie Calculator - Safe Intake for New Moms

Calculate your safe daily calorie needs after pregnancy. Accounts for breastfeeding status, weeks postpartum, and weight loss goals with evidence-based minimums.

Pregnancy Calorie Calculator - Daily Needs by Trimester

Calculate your daily calorie needs during pregnancy based on IOM 2009 guidelines. See trimester-specific calorie additions, macro breakdown with protein emphasis, and personalized TDEE using the Mifflin-St Jeor equation.

Pregnancy Due Date Calculator - Estimate Your Baby's Arrival

Calculate your estimated due date using Naegele's rule. Enter your last menstrual period or conception date and cycle length. See trimester timeline, week-by-week milestones, and nutrition tips.

Pregnancy Protein Calculator - Needs by Trimester

Calculate your daily protein needs during pregnancy based on your weight and trimester. Uses the 2016 IAAO study data with per-meal breakdown and pregnancy-safe food sources. Free online tool.

Pregnancy Weight Gain Calculator - Healthy Range by Week

Track your pregnancy weight gain with our free calculator based on IOM guidelines. See your healthy gain range by trimester, BMI category recommendations, and week-by-week timeline.

Calorie Unit Converter - kcal to kJ & cal

Convert between kilocalories (kcal), kilojoules (kJ), and calories (cal) instantly. Free 3-way energy unit converter with country labeling guide and food energy examples.

Bezplatné Kalkulačky Výživy a Zdraví - Nástroje Kaloria AI

Cups to Grams Converter - Accurate Baking Conversions

Convert cups to grams instantly for 25+ common baking and cooking ingredients. Accurate density-based conversions for flour, sugar, butter, rice, and more. Free online tool.

Grocery Budget Nutrition Optimizer - Maximize Nutrition Per Dollar

Optimize your grocery budget for maximum nutrition. Calculate cost-per-gram-protein for common foods, get personalized shopping lists, and stretch every dollar. Free tool.

Height Converter (cm to Feet) - Instant & Accurate

Convert height between centimeters and feet/inches instantly. Bidirectional cm to feet converter with common heights reference table and ideal weight estimates.

Kg to Lbs Converter - Instant Weight Conversion

Convert kilograms to pounds and pounds to kilograms instantly. Free bidirectional kg to lbs converter with common weight reference tables, food weight equivalents, and quick conversion chart.

Oz to Grams Converter - Quick & Accurate

Convert ounces to grams and grams to ounces instantly. Includes food serving sizes, visual portion comparisons, and a common food weights reference. Free bidirectional converter.

Tablespoons to Grams Converter - Accurate & Free

Convert tablespoons to grams for any ingredient instantly. Accurate density-based conversions for flour, sugar, butter, oil, honey, and 20+ common cooking ingredients. Free online tool.