Bicarbonate Deficit Calculator
Estimate bicarbonate deficit from body weight, current bicarbonate, target bicarbonate, and distribution-volume assumptions in an educational worksheet.
Free Nutrition Calculators
41 toolsMicronutrient, nutrient density, and dietary analysis calculators. Browse our free nutrition tools below — no sign-up required.
BMR Calculator
Calculate your Basal Metabolic Rate using Harris-Benedict, Mifflin-St Jeor, Katch-McArdle, and Cunningham equations. Estimate TDEE for weight goals.
Breastfeeding Calorie Calculator
Calculate daily calorie needs while breastfeeding. Accounts for milk production energy cost, activity level, and safe postpartum weight loss targets.
Calcium Intake Calculator
Calculate your daily calcium requirement based on age, sex, and health factors. Includes RDA targets, upper limits, food source tracker, and vitamin D synergy guidance.
Calorie Calculator
Estimate your daily calorie needs (BMR and TDEE) based on age, gender, height, weight, and activity level. Get targets for weight loss, maintenance, and muscle gain.
Carbohydrate Needs Calculator
Calculate your optimal daily carbohydrate intake based on body weight, activity level, and fitness goals. Includes meal distribution and food source reference.
Carboplatin AUC Dosing Calculator
Calculate carboplatin dose using the Calvert formula with AUC targeting. Supports measured GFR or Cockcroft-Gault CrCl estimation with FDA GFR capping.
Cholesterol Unit Converter
Convert cholesterol and triglyceride values between mg/dL and mmol/L. Full lipid panel conversion with risk assessment and reference ranges.
Corrected Sodium Calculator for Hyperglycemia
Calculate corrected sodium for hyperglycemia using Katz (1.6) and Hillier (2.4) correction factors. Essential for DKA and HHS sodium assessment.
Daily Fat Intake Calculator
Calculate your optimal daily fat intake by body weight and diet type. Includes saturated fat limits, omega-3 targets, and food source reference table.
Daily Fiber Intake Calculator
Calculate your recommended daily fiber intake by age, sex, and health goals. Includes soluble vs. insoluble targets and high-fiber food source reference.
Daily Protein Intake Calculator
Calculate your optimal daily protein intake based on weight, body fat, activity level, and goals. Includes per-meal targets, leucine thresholds, and food source reference.
Daily Value Percentage Calculator
Calculate the percentage of Daily Value (%DV) for any nutrient based on FDA reference values. Customize for your calorie target.
Daily Vitamin & Mineral Needs Calculator
Find your recommended daily intake for 18 essential vitamins and minerals based on age, sex, pregnancy, and lactation. Includes upper limits and deficiency signs.
DKA Severity & Lab Worksheet
Review common DKA severity criteria, anion gap, corrected sodium, osmolality, and related lab context in a single severity worksheet.
Electrolyte Needs Calculator
Estimate daily electrolyte needs for sodium, potassium, and magnesium based on activity level, sweat rate, climate, and diet. Built for hydration planning and comparison.
Fiber Intake Calculator
Calculate your recommended daily fiber intake based on age, sex, and calorie consumption. Learn about soluble vs insoluble fiber with food source guidance.
Food Calorie Density Calculator
Calculate the calorie density (calories per gram) of any food. Compare foods by energy density and find high-satiety, low-calorie options for weight management.
Glycemic Load Calculator
Calculate glycemic load from glycemic index and available carbohydrate per serving, with low, medium, and high GL reference bands.
Iron Intake Calculator
Calculate your daily iron requirement based on age, sex, diet type, and health factors. Includes RDA targets, vegetarian adjustments, and iron-rich food sources.
IV Fluid Sodium Change Calculator
Estimate serum sodium change from IV fluid infusion using the Adrogue-Madias formula across common crystalloid and hypertonic fluids.
Keto Macro Calculator
Calculate your ketogenic diet macros for fat, protein, and net carbs. Supports SKD, TKD, CKD, and high-protein keto protocols with personalized calorie targets.
Macro Calculator
Calculate your optimal daily macronutrient split — protein, carbohydrates, and fat — based on your calorie target and diet type. Get grams and calories for each macro.
Maintenance Calorie Calculator
Estimate maintenance calories using 4 BMR equations. Includes TDEE, macro breakdown, meal split, and calorie goals for cutting and bulking.
Meal Prep Portions Calculator
Calculate meal prep portions, macros per container, and grocery quantities. Scale recipes for any number of servings and days.
Metabolic Syndrome Risk Calculator
Assess metabolic syndrome risk using ATP III and IDF criteria. Enter waist, blood pressure, glucose, triglycerides, and HDL to check all 5 diagnostic criteria.
Micronutrient Daily Needs Calculator
Find your recommended daily intake for 17 essential vitamins and minerals. Adjusted by age, sex, pregnancy status, and diet type with food source references.
Micronutrient Gap Finder Calculator
Identify vitamin and mineral deficiencies by comparing your daily intake to RDA targets. Find gaps and get food source recommendations.
Nutrient Density Score Calculator
Calculate a nutrient density score for any food based on vitamins, minerals, and fiber per calorie. Compare foods using an ANDI-style scoring system.
Omega-3 to Omega-6 Ratio Calculator
Estimate your omega-3 to omega-6 intake ratio from diet, compare it with commonly cited reference ranges, and review practical food-swap ideas.
Recipe Nutrition Scaler Calculator
Scale recipe ingredients and nutrition by serving multiplier. Adjust portions up or down while keeping the per-serving proportions intact.
Simple Daily Calorie Intake Calculator
Estimate daily calories for loss, maintenance, or gain with goal-based targets, a default macro split, and a simple food-reference view.
Sodium Correction Rate Calculator
Calculate sodium correction rate from serial labs and compare it with common 24h and 48h safety limits.
Sodium Deficit Calculator
Calculate total sodium deficit in hyponatremia and view common reference volumes for 3% NaCl, normal saline, and oral NaCl tablets.
Sodium in Salt Converter
Convert between sodium and salt (NaCl). Compare salt types, check food sodium content against daily limits, and convert mg, mEq, mmol, and teaspoons.
Sodium Intake Calculator
Calculate your recommended daily sodium intake based on age, health status, and activity level. Includes AHA guidelines, athlete adjustments, and food sodium tracker.
Sugar Intake Calculator
Calculate your recommended daily sugar limit based on calorie intake using WHO and AHA guidelines. Convert between grams, teaspoons, and percent of calories.
Urine Protein-to-Creatinine Ratio Calculator
Calculate spot urine protein-to-creatinine ratio (PCR) and albumin-to-creatinine ratio (ACR) as a proteinuria screening and trend worksheet, with estimated 24-hour context.
Vitamin A Intake & Conversion Calculator
Convert vitamin A between IU, mcg RAE, and beta-carotene. Check intake against RDA and upper limits. Covers retinol, carotenoid sources, food content, and toxicity thresholds.
Vitamin D Needs Calculator
Calculate your daily vitamin D requirement based on age, sun exposure, latitude, skin tone, and health conditions. IOM and Endocrine Society guidelines supported.
Water Intake Calculator
Calculate how much water you should drink daily based on body weight, activity level, and climate. Personalized hydration targets in liters, ounces, and cups.