Food & Nutrition Calculators
Calorie, macro, keto and meal-planning calculators — portion and recipe scaling with the nutrition reference behind each figure.
Nutrition math from calories to macros: Mifflin-St Jeor BMR, activity multipliers, keto carb limits, recipe scaling. Each calculator shows its formula and the population range it was derived from, and reminds you where individual variation matters more than the formula.
Daily Calorie Needs
Calculate daily calorie needs from BMR
Macro Split Calculator
Calculate protein, carbs, fat split
Daily Protein Need
Calculate optimal protein intake
Daily Water Intake
Calculate how much water to drink
Weight Loss Timeline
Estimate time to goal weight
Body Fat % (US Navy)
Estimate body fat using US Navy method
Calories Burned (Activity)
Estimate calories for common activities
Recipe Scaler
Scale ingredients by servings
Cooking Time Adjuster
Adjust cooking time for weight
Meal Prep Cost
Calculate cost per serving
Food Unit Converter
Convert cups to grams
Eating Out vs Cooking
Compare restaurant vs home costs
Fast Food Calories
Estimate fast food calories
Keto Macro Calculator
Calculate keto diet macros
IF Schedule Planner
Plan intermittent fasting schedule
Vegan Protein Sources
Calculate plant-based protein needs
Grocery Cost/Person
Calculate grocery costs for household
Baking Substitution
Find baking substitution ratios
Coffee Cost per Cup
Calculate true cost of your daily coffee habit
Tea vs Coffee Cost
Compare daily tea vs coffee spending
Daily Sugar Intake
Track added sugar vs WHO recommendation
Carb Calculator
Daily carbohydrate needs
Daily Fiber Need
Recommended fiber intake
Calories per Meal
Split daily calories across meals
Rice Water Ratio
Water needed for perfect rice
Meat Cooking Time
Roasting time for meat
Egg Boiling Time
Perfect egg boiling times
Smoothie Calories
Calories in your smoothie ingredients
Protein per Dollar
Best value protein sources
Sodium Intake Tracker
Daily sodium from common foods
Caffeine Calculator
Daily caffeine from drinks
Pizza Calculator
Pizza per person and total cost
Meal Prep Batch Size
Batch cooking portions per recipe
Added Sugar Limit
Added sugar budget and tracking
Alcohol Calorie Calculator
Calories from ethanol in your drink
Oven Temperature Converter
Fan vs conventional oven temps and time
Homebrew ABV Calculator
Alcohol by volume from original and final gravity
Formulas, worked examples aur edge cases ke liye: Food & Nutrition guides
Frequently asked questions
Where do the calorie-per-gram figures come from?
The standard factors — about 4 kcal per gram of protein and carbohydrate, 9 kcal per gram of fat, and 7 kcal per gram of alcohol — come from the Atwater system. They are averages across foods, so a label's measured value can differ slightly from one calculated from macros.
What exactly are net carbs?
Net carbs are total carbohydrate minus fibre, and sometimes minus sugar alcohols, on the basis that fibre is largely undigested. Rules differ by country and some products subtract more than others, so use one consistent method when comparing foods rather than mixing label conventions.
Should I weigh ingredients or use volume measures?
Weighing is more accurate, especially for anything that settles or packs down such as flour, sugar and grated cheese. Volume measures can vary by a third or more depending on how the ingredient is scooped, which is enough to change a bake noticeably.
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