Health Calculators

Free keto calculator finds your daily keto macros, calories, protein, fat and net carb limit in seconds. Get personalized numbers for fat loss or maintenance.

Free waist to height ratio calculator finds your WHtR instantly. See if your ratio is healthy, what 0.5 means, and the ideal waist size for your height.

Free waist to hip ratio calculator finds your WHR in seconds. See if your ratio is healthy for men or women, what 0.7 means, and how to measure correctly.

Free fat intake calculator shows how many grams of fat per day you need for your calories and goal. See fat charts for weight loss, plus saturated fat limits.

Free protein calculator shows how much protein per day you need by body weight. See protein charts in grams per pound and kg for weight loss and muscle gain.

Free water intake calculator shows how much water to drink per day by body weight, in oz and liters. See charts for 120 to 250 lb and weight-loss hydration.

Free lean body mass calculator uses the Boer, James, and Hume formulas. Find your LBM in kg or lbs, see the LBM chart by height, and how to calculate it.

Free Navy body fat calculator uses the US Navy and Army circumference method. Find your body fat percentage from neck, waist, and hip measurements in seconds.

Free carb calculator finds how many carbs per day you need for your goal. Includes the net carb formula, carbs-to-calories conversion, and low-carb targets.

Free one rep max calculator estimates your 1RM from reps and weight using 4 proven formulas. Includes the 1RM percentage chart and rep max conversion table.

Free calorie calculator finds your daily calories to maintain, lose, or gain weight using the Mifflin-St Jeor formula. See how many calories are in a pound too.