Protein Intake Calculator — Daily Protein Needs (g/day)

Protein Intake Calculator

Calculate a personalised protein target (grams per day) based on your weight, activity level and goal. Includes meal timing, sample menus and practical tips to meet targets.

Unit kg lb Weight

Activity level Sedentary — little or no exercise Light — light workouts or active lifestyle Moderate — 3–5 workouts/week Heavy — intense training or athlete

Primary goal Maintain weight Fat loss (preserve muscle) Muscle gain Body recomposition

Protein preference (g/kg) Auto (recommended range) 1.0 g/kg (low) 1.2 g/kg 1.6 g/kg 2.0 g/kg 2.2 g/kg (high)

Protein Recommendation

Target: — g/day

Per kg: — g/kg

Meal distribution (example)

Practical tips

Tip: Prioritise whole-food proteins (eggs, dairy, lean meats, legumes, tofu) and use supplements only if needed.

Protein Intake: How Much Do You Really Need? Evidence-based Guide

Protein is an essential macronutrient required to build and repair tissues, synthesise enzymes and hormones, support immune function and preserve lean mass during weight loss. Determining the right daily protein intake depends on your bodyweight, activity level, and goals — whether you want to maintain weight, lose fat while preserving muscle, or increase muscle mass. This guide combines practical calculation with applied advice (timing, quality, meal planning) so you can hit your targets consistently.

Why protein matters

Protein provides amino acids — the building blocks of muscle and many physiological systems. Adequate protein intake helps:

• Preserve lean mass during calorie deficits
• Support muscle protein synthesis after resistance exercise
• Increase satiety, aiding appetite control during weight loss
• Support recovery and immune health in high activity individuals

Evidence-based ranges (practical)

While exact needs vary, commonly recommended ranges are:

• General adults (sedentary): ~0.8–1.0 g/kg (minimum recommendation)
• Active adults / maintain muscle: ~1.2–1.6 g/kg
• Fat loss while preserving muscle: ~1.6–2.2 g/kg
• Muscle gain / heavy training: ~1.6–2.2 g/kg (some athletes use slightly higher)

These ranges reflect current practical guidance from sports nutrition literature. Importantly, total daily intake and consistent distribution across meals drive results; excessively high protein offers diminishing returns for most people.

How the calculator decides your target

The built-in calculator selects a recommended grams-per-kilogram value based on your activity & goal (unless you choose a manual g/kg preference). It multiplies that value by your weight (kg) to give a daily target in grams, calculates calories contributed by protein (1 g protein = 4 kcal) and offers a sample meal distribution so you can plan real meals.

Protein quality & food sources

High-quality proteins provide all essential amino acids. Examples include:

• Animal-based: eggs, dairy, poultry, fish, lean red meat — typically high biological value.
• Plant-based: soy, lentils, chickpeas, pea-protein blends, quinoa — combine different plant sources for a full amino-acid profile.

If you follow a vegetarian or vegan diet, aim for slightly higher g/kg targets (e.g., +0.1–0.3 g/kg) to account for lower digestibility of some plant proteins and include fortified or blended protein sources where helpful.

Meal timing and distribution

Distributing protein evenly across meals maximises muscle protein synthesis. Aim for roughly 20–40 g of protein per meal depending on body size and target. For example, a daily target of 140 g could be split as 35 g at breakfast, lunch, post-workout and dinner.

Supplements — when they help

Protein powders (whey, casein, soy, pea blends) provide convenient, cost-effective protein to meet targets — especially around training or when whole-food options are limited. However, whole foods also provide vital micronutrients. Use supplements to fill gaps, not as your sole source.

Practical meal examples

• Breakfast: 3 eggs + 1 cup Greek yogurt ≈ 30–35 g protein
• Lunch: 120–150 g cooked chicken breast + salad ≈ 35–45 g protein
• Snack: Cottage cheese or protein smoothie ≈ 15–25 g
• Dinner: Salmon (120 g) + quinoa + veg ≈ 30–35 g

Who should be cautious

Most healthy people tolerate recommended protein ranges well. Individuals with advanced kidney disease or certain metabolic disorders should follow clinician guidance. If you have a medical condition, check with your healthcare professional before making large changes.

Tracking & adapting over time

Use the calculator to set an initial target, then monitor progress: energy levels, training performance, body composition and satiety. Adjust protein and total calories as progress dictates. For example, if muscle gain plateaus, increase total calories and keep protein near the higher end (1.8–2.2 g/kg).

Related Tools

TDEE Calculator Lean Body Mass BMI Calculator

Disclaimer: This information is educational and not medical advice. If you have medical conditions, kidney disease, or special dietary needs, consult a registered dietitian or physician before changing protein intake significantly.