Nutrition & Fitness Calculators
Calories, macros and training.
Estimate daily calorie needs, BMR and TDEE, plan macronutrients, and track fitness numbers like one-rep max, pace and target heart rate.
BAC CalculatorEstimate blood alcohol concentration (BAC) from drinks, body weight and time using the Widmark formula.BMR CalculatorEstimate your Basal Metabolic Rate — the calories your body burns at complete rest.Caffeine Half-Life CalculatorEstimate how much caffeine remains in your system after a given time.Calorie CalculatorEstimate daily calories to maintain, lose or gain weight based on your activity level.Calories Burned CalculatorEstimate calories burned for an activity from your body weight and how long you exercised.Carbohydrate CalculatorFind how many grams of carbohydrate to eat per day from your calories and target carb share.Cholesterol Ratio CalculatorCompute your total-to-HDL cholesterol ratio and non-HDL cholesterol from a lipid panel.Fat Intake CalculatorFind how many grams of dietary fat to eat per day from your calories and target fat share.Golf Handicap CalculatorEstimate a golf handicap index from up to five rounds of scores, course ratings and slope ratings.Macro CalculatorConvert a daily calorie target and macro percentages into grams of protein, carbs and fat.One Rep Max CalculatorEstimate the most weight you could lift for a single repetition from a set you have already done.Pace CalculatorWork out your running pace and speed from a distance and the time it took.Power-to-Weight Ratio CalculatorCalculate your power-to-weight ratio in watts per kilogram and see the cycling category it falls in.Protein CalculatorEstimate daily protein needs from your body weight and activity goal.Steps to Calories CalculatorConvert a step count into estimated calories burned and distance walked.Target Heart Rate CalculatorFind your training heart-rate zone using the Karvonen heart-rate reserve method.TDEE CalculatorEstimate the total calories you burn per day, including activity, from your BMR.VO2 Max CalculatorEstimate VO2 max (aerobic fitness) from your maximum and resting heart rates.Water Intake CalculatorEstimate how much water to drink per day based on your weight and exercise.Weight Watcher Points CalculatorEstimate the legacy Weight Watchers points value of a food from its calories, fat and fibre.