The Protein Calculator is a free that will give you a personalized estimate of how much protein you actually need for muscle gain based on your weight, activity level.
Input the numbers and get instant results
Based on your selections.
A simple way to estimate your daily protein intake based on your body weight, activity level, and fitness goals.
Ever wonder if you're actually getting enough protein—or maybe too much? A Protein Calculator takes the
guesswork out of it. Rather than handing you some generic number that's supposed to work for everyone.
It looks at you: your body weight, how active you are, and what you're actually trying to achieve. It
does not matter if you are shedding a few pounds, building muscle, or just holding steady where you are.
Here's why protein matters so much in the first place. It's the building block your body relies on to
repair and grow muscle, especially after a tough workout. It also plays a quiet but powerful role in
keeping you satisfied between meals, so you're not raiding the pantry an hour after lunch.
The tricky part? Most people are either underestimating what they need or overcomplicating the math.
That's where this comes in.
Our free Protein Calculator cuts through the confusion. Built on evidence-based guidelines, it gives you
a personalized daily protein target in under 30 seconds—no spreadsheets, no guessing. Just plug in your
details above and see what your body actually needs.
Learn how our Protein Calculator estimates your daily protein needs, why protein is important for your body, and how your fitness goals influence your recommended protein intake.
Our Protein Calculator estimates your recommended daily protein intake using evidence-based nutrition guidelines. It considers your body weight, activity level, and fitness goal to generate a personalized daily protein target.
Protein needs aren't the same for everyone. Your recommended intake changes depending on what you're trying to achieve.
Protein is an essential nutrient that supports much more than muscle growth. Getting enough protein each day helps your body function properly and supports long-term health.
Every illustration is based on established nutrition guidelines tailored for a selected fitness goal.
Uses internationally recognized protein intake recommendations.
Get your personalized protein target in less than 30 seconds.
Estimation & Illustration change depending on whether you're losing weight, maintaining or building muscle.
These are some of the most popular foods people use to reach their daily protein intake.
Here are answers to the most common questions about daily protein intake and our calculator.
For a generally healthy adult, the Recommended Dietary Allowance (RDA) for protein is 0.8 grams per kilogram of body weight per day, or about 0.36 grams per pound. For example, a 150-pound (68 kg) adult would need about 54–55 grams of protein per day to meet the basic RDA. However, 0.8 g/kg is a baseline recommendation, not necessarily the ideal amount for everyone. Your protein needs can be higher depending on your age, activity level, and goals. If you exercise regularly, especially if you do strength training, research suggests that around 1.4–2.0 g/kg per day may be appropriate for most active adults. If you’re trying to lose weight, getting enough protein can also help support muscle while you’re eating fewer calories. Older adults may benefit from higher protein intake as well. In other words, there isn’t one protein target that works for everyone. Your ideal daily protein intake depends on your body and what you’re trying to achieve. Use our protein calculator above to get a personalized estimate based on your weight, activity level, and goal.
Higher protein intake helps preserve muscle and improves satiety during weight loss.
The calculator estimates your daily protein intake using your age, sex, height, weight, activity level and health goal. It applies evidence-based recommendations commonly used in sports nutrition to provide an individualized estimate rather than a one-size-fits-all number.
Healthy adults can safely consume higher protein intakes within recommended ranges, but extremely high amounts may not provide additional benefits. People with kidney disease or certain medical conditions should consult their healthcare provider before making significant dietary changes.
Meeting your total daily protein target is more important than exact timing. However, eating protein within a few hours before or after resistance training may support muscle recovery and growth.
Our Protein Calculator provides an evidence-based estimate using recognized nutrition guidelines and your personal information. While it offers a reliable starting point, individual needs can vary based on medical conditions, medications and specific dietary requirements. For personalized medical advice, consult a registered dietitian or healthcare professional.
Whether 100 grams of protein is enough depends on your body weight, activity level, age, and fitness goals. For some people it may exceed their daily needs, while athletes or larger individuals may require significantly more. A protein calculator provides a personalized recommendation rather than relying on a fixed number.
Yes. Protein requirements can change with age. Older adults often benefit from slightly higher protein intake to help maintain muscle mass, strength, and overall health. A protein calculator considers age as one of several factors when estimating daily protein needs.