Nutrition Calculator

These tools cover daily nutrition from multiple angles. The Macro Calculator breaks down carbohydrate, fat, and protein targets; the Protein Calculator sets intake targets by body weight; and the Calorie Calculator gives you a baseline energy figure. The Water Intake Calculator adds hydration to the picture, while the Raw Dog Food Calculator, Dog Food Calculator, and Omega-3 For Dogs Calculator extend the collection to cover pet nutrition.

Browse the most-popular list to see which tools visitors rely on most, or open the Trending tab for what's gaining traction right now. All calculators are free, require no account, and work on any device.

  • Percent Daily Value (%DV) Calculator
    Calculate the Percent Daily Value (%DV) of a nutrient from the amount per serving and its recommended daily value. Fast, free %DV nutrition calculator.
  • Bulking & Cutting Calorie Calculator
    Calculate your daily calorie target for bulking, cutting, or maintaining based on your TDEE. Bulk at 110-120% and cut at 75-85% of maintenance.
  • Daily Protein Requirement Calculator
    Calculate your daily protein needs in grams from body weight and activity level, from the 0.8 g/kg RDA up to 2.2 g/kg for athletes.
  • Sodium to Salt Calculator
    Convert sodium (mg) to salt (grams) instantly. Multiply sodium by 2.5 to find equivalent table salt (NaCl) for nutrition labels and diet tracking.
  • Calorie Macro Split Calculator
    Convert your daily calorie target and macro percentages into grams of protein, carbs and fat. Free macro split calculator with instant results.
  • Calories from Fat, Protein & Carbs Calculator
    Calculate total calories from fat, protein, carbs and alcohol grams using the 9/4/4/7 kcal-per-gram Atwater factors, plus each macro's % of energy.
  • Pregnancy Caffeine Limit Calculator
    Add up coffee, tea, soda, energy drinks and chocolate to see how much caffeine you've had and how much is left under the 200 mg/day pregnancy limit.
  • Daily Water Intake by Body Weight Calculator
    Calculate how much water you should drink daily based on your body weight in pounds or kilograms, plus your activity level. Get ounces, ml, liters and cups.
  • Calories Burned by Steps Calculator
    Estimate calories burned from your step count, body weight and height. Free calculator using stride length and distance to give kcal burned walking.
  • Calories to Kilojoules Converter
    Convert calories (kcal) to kilojoules (kJ) and back instantly. Uses the exact factor 1 kcal = 4.184 kJ for accurate energy conversions.
  • Daily Protein Intake Calculator
    Calculate your daily protein needs in grams from body weight and activity level (0.8–2.2 g/kg). Free, instant protein intake calculator.
  • Daily Sugar Limit Calculator (WHO/AHA)
    Find your daily added/free sugar limit in grams using WHO (10% and 5% of calories) and AHA (36g men, 25g women) guidelines.
  • Macro Calculator
    Free macro calculator: convert your daily calories and macro split (%) into grams of protein, carbs, and fat per day using 4/4/9 kcal-per-gram.
  • Weekly Calorie Deficit Calculator
    Calculate your daily and weekly calorie deficit and see your estimated weekly weight loss in kg and pounds. Free, instant weight-loss pace tool.
  • Cat Calories per Can to Cans per Day Calculator
    Calculate how many cans of wet food your cat needs per day. Enter daily calorie needs and kcal per can to get cans per day and per week.
  • Macronutrient Split Calculator
    Convert your daily calories and macro percentages into grams of protein, carbs, and fat per day. Free macronutrient split calculator.
  • Dog Calories per Cup to Cups per Day Calculator
    Convert your dog's daily calorie needs (MER in kcal) to cups of food per day using the kcal-per-cup density on the bag. Free, instant feeding portion tool.
  • Running Calories Burned Calculator
    Estimate net calories burned running from your body weight and distance. Free running calorie calculator using the simple 1.036 × kg × km formula.
  • Calories Burned Running Calculator
    Estimate calories burned running by distance and body weight. Free running calorie calculator using kcal = 0.75 × kg × km (≈ 0.53 × lb × miles).
  • Calorie Surplus Calculator for Weight Gain
    Calculate the daily calorie surplus and target intake needed to gain weight by a target date. Free weight-gain calorie calculator with worked example.
  • Alcohol By Volume (ABV) Calculator
    Calculate the alcohol by volume (ABV%) of beer, wine, or mead from original and final gravity readings using the standard ABV = (OG − FG) × 131.25 formula.
  • Kilojoules to Calories Calculator
    Convert kilojoules (kJ) to calories (kcal) instantly. Enter an energy value and get food Calories using kcal = kJ ÷ 4.184.
  • Baby Feeding Amount by Weight Calculator
    Estimate how much formula or milk to feed your baby per day and per feed based on weight, using the standard 150 mL/kg/day guideline.
  • mL to Grams Calculator
    Convert milliliters (mL) to grams (g) using density. Free volume-to-weight calculator with presets for water, milk, oil, honey, flour and more.

Frequently asked questions

What nutritional values can I calculate here?

You can estimate daily calorie needs, optimal macro splits across carbs, protein, and fat, protein intake targets by body weight, healthy fat intake ranges, and daily water requirements. Pet owners can also calculate appropriate raw food portions, general dog food amounts, and omega-3 dosing for their dogs.

How reliable are the nutritional estimates?

Calculations are based on standard reference formulas and dietary guidelines — for example, protein-per-kilogram norms and established fluid intake recommendations. Results are general estimates, not personalized dietary prescriptions. These tools are NOT a substitute for medical or dietitian advice; consult a qualified healthcare professional for guidance tailored to your specific health needs.

Are the dog nutrition calculators based on veterinary guidelines?

The dog calculators reference common veterinary and pet-nutrition frameworks, such as percentage-of-body-weight guidelines for raw feeding and AAFCO-based nutrient references. They provide a practical starting point, but for animals with health conditions always confirm with your veterinarian.

Do you store the data I enter?

No. All calculations happen in your browser. Nothing you type — your weight, calorie goals, or pet details — is sent to our servers or saved between sessions.

Which nutrition calculators are most popular?

The list is ordered by actual visitor usage, so the tools at the top are genuinely the most-used. Flip to the Trending tab to see which calculators are getting the biggest surge in visits right now, or Recently Added for the newest tools.

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