Fitness Calculators Water Intake calculator Metric require Standard require Age 14-18 19-30 31-50 50+ Sex Male Female Height require Weight require Season Winter Normal Summer Activity level Lightly active Moderately active Very Active Calculate you should drink ...... of water per day Protein Intake calculator Metric require Standard require Age age should be in 14 to 80 range Sex Male Female Height require Weight require Goal Fat loss Maintenance Muscle gain Activity level Sedentary Lightly Active Moderately Active Very Active Calculate You should take ...... of protein per day BMI calculator Metric require Standard require Height require Weight require Calculate Your BMI is...... BMIClassification less than 18.5:Underweight 18.5 - 24.9:Normal weight 25 - 29.9:Overweight 30 - 34.9:Class I Obese 35 - 39.9:Class II Obese 40 upwards:Class III Obese Body Fat calculator Metric require Standard require Male require Female require Height require Weight require Age require Calculate Your body fat is ...... DescriptionWomenMen Recommended amount:20-25%8-14% Adults in United States, average :22-25%15-19% Obese :30+%25+%