Calculate your recommended daily protein intake based on your body weight and activity or fitness goal.
A Protein Calculator estimates a person's recommended daily protein intake based on their body weight, activity level, and specific fitness or health goals such as muscle building, weight loss, or general maintenance. Protein plays a critical role in muscle repair, immune function, and satiety, and getting the right amount supports whatever specific health or fitness outcome someone is working toward.
General guidelines suggest 0.8 grams of protein per kilogram of body weight for sedentary adults, while active individuals and those focused on muscle building often benefit from higher intakes ranging from 1.6 to 2.2 grams per kilogram of body weight, with the specific target depending on training intensity, goals, and individual factors like age.
Enter your body weight and select your activity level and specific goal (maintenance, muscle building, or fat loss). The calculator returns a recommended daily protein intake target in grams, giving you a practical number to plan meals and track against throughout the day.
Example 1: A sedentary 70 kg adult has a baseline protein target of 70 × 0.8 = 56 grams per day for general health maintenance.
Example 2: An active 70 kg person focused on muscle building might target 70 × 1.8 = 126 grams of protein per day, significantly higher than the sedentary baseline to support muscle repair and growth from regular training.
Regular resistance training and intense physical activity create more muscle tissue breakdown and repair demand, so higher protein intake supports this increased repair and adaptation process, which sedentary individuals with lower training stress don't require to the same degree.
For most healthy individuals, higher protein intake within commonly recommended ranges is generally considered safe, though people with existing kidney conditions should consult a doctor, since impaired kidneys may have more difficulty processing very high protein loads.
While total daily protein intake is the primary driver of benefits like muscle protein synthesis, distributing protein intake relatively evenly across meals throughout the day, rather than consuming it all at once, is generally considered to optimize muscle protein synthesis more effectively.
Both goals often benefit from relatively higher protein intake, since protein supports satiety (helpful for weight loss) and preserves lean muscle mass during a calorie deficit, while also directly supporting muscle growth when combined with a calorie surplus and resistance training.
Plant-based proteins can absolutely meet daily protein needs, though some individual plant sources have a less complete amino acid profile compared with animal proteins, which is why combining varied plant protein sources throughout the day helps ensure adequate intake of all essential amino acids.
Older adults often benefit from higher protein intake than younger sedentary adults, since aging is associated with a natural decline in muscle mass (sarcopenia), and adequate protein combined with resistance exercise helps counteract this age-related muscle loss.
Using lean body mass (excluding fat mass) can provide a more physiologically accurate protein target, particularly for individuals with higher body fat percentages, since muscle tissue, not fat tissue, is what primarily drives protein requirements for repair and growth.
Protein supplements like whey or plant-based powders can conveniently help meet daily targets, especially around workouts, but whole food protein sources generally provide additional beneficial nutrients like vitamins, minerals, and fiber that supplements typically lack.
Since protein contributes 4 calories per gram, a higher protein target also needs to fit within your overall daily calorie budget, meaning protein, carbohydrate, and fat targets should be considered together as part of a complete nutrition plan rather than protein in isolation.
Individual factors like training experience, specific goals, and genetics mean a range better accommodates individual variation than a single fixed number, allowing people to adjust within that range based on how their body responds over time.
Yes, the body's repair processes during recovery from injury or illness often benefit from increased protein intake, supporting tissue repair and immune function, though specific needs should ideally be guided by medical advice for significant injuries.
Complete proteins containing all essential amino acids, typically found in animal products, soy, and quinoa, are generally considered higher quality than incomplete plant proteins lacking one or more essential amino acids on their own.