weight loss Calculators
Last updated: May 2026
Daily Calorie Deficit Calculator
Calculate the daily calorie deficit needed to reach a target body weight within a specified timeframe based on the simple rule that 1 kg of body fat ≈ 7,700 calories.
Weight Loss Timeline Calculator
Calculate the number of weeks needed to reach a target weight given current weight, goal weight, and planned weekly loss rate.
Body Fat Percentage Calculator
Estimate body fat percentage using the US Navy circumference method (waist, neck, height).
Exercise Calories Burned Calculator
Estimate calories burned during exercise from MET intensity, body weight, and duration, with a 5% upward adjustment for excess post-exercise oxygen consumption (EPOC).
Water Intake Calculator for Weight Loss
Calculate recommended daily water intake during weight loss based on body weight, activity level, and climate conditions.
Protein Intake Calculator for Weight Loss
Finds your ideal daily protein intake in grams to preserve lean muscle while cutting calories.
Walking for Weight Loss Calculator
Estimates annual fat loss in kilograms from a regular walking routine based on your weight, pace, duration, and weekly frequency.
Metabolic Rate Calculator for Weight Loss
Calculates your Basal Metabolic Rate (BMR) using the Mifflin-St Jeor equation based on weight, height, age, and gender.
Meal Frequency Calculator for Weight Loss
Determines the ideal calorie allocation per meal and snack based on your daily calorie target, number of main meals, and snacks.
Weight Loss Plateau Breaker Calculator
Calculates an adjusted daily calorie target to help break through a weight-loss plateau, accounting for how long you've been stuck and your current weekly exercise volume.
Calorie Deficit Weight Loss Calculator
Find your daily calorie target to lose weight by a specific date.
Body Fat Percentage Calculator (Navy Method)
Estimate your body fat percentage using only a tape measure and the U.S.
Macro Split Calculator
Determine how many grams of protein, carbohydrates, and fat to eat daily based on your calorie target, body weight, and fitness goal.
BMR & TDEE Calculator
Calculate your Basal Metabolic Rate (BMR) and Total Daily Energy Expenditure (TDEE) to find exactly how many calories your body needs each day.
Ideal Weight Calculator
Estimate your ideal body weight in pounds using four established medical formulas adjusted for height, gender, and body frame size.
Daily Water Intake Calculator
Estimates your ideal daily water intake in ounces based on body weight, exercise duration, climate, and caffeine or alcohol consumption.
Lean Body Mass Calculator
Calculates your lean body mass — the weight of everything except body fat — using your choice of three validated clinical formulas.
Zigzag Calorie Cycling Calculator
Calculates your high-calorie and low-calorie day targets when cycling calories to prevent metabolic slowdown during a cut.
Safe Weight Loss Pace Calculator
Determines the maximum pounds per week you can safely lose while preserving muscle, based on your body fat percentage, current weight, dieting experience, and muscle preservation priority.
Calorie Deficit Calculator
Calculates the daily calorie target you need to hit your weight loss goal within a chosen timeframe, given your current TDEE.
BMR & TDEE Calculator
Estimates your Basal Metabolic Rate (calories burned at rest) and Total Daily Energy Expenditure using the Mifflin-St Jeor equation.
Macro Split Calculator
Breaks your daily calorie goal into grams of protein, fat, and carbohydrates based on your chosen diet style — keto, low-carb, or balanced.
Body Fat Loss Calculator
Estimates the target body weight you need to reach in order to hit a specific body fat percentage, accounting for potential muscle loss during a cut.
Water Intake Calculator
Calculates your personalized daily water intake in ounces based on body weight, exercise duration, climate, and whether you are in an active weight-loss phase.
Intermittent Fasting Calculator
Calculates your eating window end time and per-meal calorie distribution based on your fasting protocol, first meal time, and daily calorie goal.
Cheat Meal Impact Calculator
Find out how indulgent meals affect your weekly calorie deficit.
Weight Loss Cost Calculator
Estimate the total financial cost of your weight loss plan, including gym fees, supplements, and a healthier food budget.
Metabolic Adaptation Calculator
Estimate how your metabolism slows after weeks of dieting by accounting for lower body mass and adaptive thermogenesis.
Calorie Deficit Calculator
Determine the exact daily calorie deficit needed to lose a set amount of weight within a chosen timeframe.
Macronutrient Calculator
Calculate your daily protein, carbohydrate, and fat gram targets from your calorie goal and preferred macro ratios.
Body Fat Loss Calculator
Estimates how much fat versus muscle you'll lose reaching a target body fat percentage.
Intermittent Fasting Calculator
Plans your daily eating window, meal end time, and per-meal calorie distribution for any intermittent fasting protocol.
Weight Loss Plateau Calculator
Calculates an adjusted daily calorie target to help you push past a weight loss plateau.
Water Weight vs Fat Loss Calculator
Estimates how much of your weekly weight change is true fat loss versus water retention fluctuation.
Cheat Meal Impact Calculator
Calculates your adjusted average daily calorie deficit after accounting for planned cheat meals each week.
Sustainable Weight Loss Rate Calculator
Find your maximum safe weekly weight loss rate based on your current weight, body fat, dieting experience, and lifestyle demands.
TDEE Calculator
Calculate the total calories your body burns each day, including your basal metabolic rate and physical activity.
Ideal Weight Range Calculator
Estimate your healthy weight range using the Hamwi formula adjusted for frame size, age, and sex.
Resting Metabolic Rate Calculator
Calculate your Resting Metabolic Rate using the Mifflin-St Jeor equation, with an optional body composition adjustment for more accuracy.
Weight Loss Plateau Calculator
Estimate how much your metabolism has slowed down during a calorie deficit and why your weight loss has stalled.
Exercise Calories Burned Calculator
Estimates the calories you burn during exercise based on your weight, activity type, duration, and intensity.
Meal Planning Calculator
Distributes your daily calorie target across meals based on meal count and percentage breakdowns.
BMI & Weight Category Calculator
Calculates your Body Mass Index (BMI) from weight and height in US units, then classifies it into a weight category.