Protein needs vary dramatically - a sedentary office worker needs only 0.8 g/kg, while a lifter on a fat-loss phase may need 2.0+ g/kg. This calculator gives the right daily target based on your body weight and goal.
Goal / activity
Daily protein
98 g
1.4 g/kg
From protein
392 kcal
Per meal (4×)
25 g
Spread across meals
Indian protein quick reference
Egg (large) ~6 g · Paneer 100 g ~18 g · Chicken 100 g ~25 g · Dal cooked 100 g ~5 g · Curd 100 g ~3 g · Whey scoop ~24 g
Protein is safe for healthy adults at the levels recommended here. Those with kidney disease should consult a nephrologist. Pair high protein with adequate water (2.5-3 L/day) for kidney health.
Protein is the most-discussed macronutrient in fitness, and for good reason. It builds and repairs every tissue in the body - muscle, skin, hair, bone, organs - and provides the amino acid substrate for hormones, enzymes and immune-system components. For fitness goals specifically, protein has three superpowers: it's the macro that builds muscle (the main reason you lift weights), it's the most satiating (helps fat loss by reducing hunger), and it has the highest thermic effect (20-30% of calories from protein are burned just digesting it, vs 5-10% for carbs and fat).
Daily protein needs vary widely depending on your activity and goals. The RDA of 0.8 g/kg body weight is the minimum to prevent deficiency in sedentary adults - well below what active or fitness-focused individuals need. Modern sports nutrition research consistently supports 1.6-2.2 g/kg for lifters and athletes, with the upper range during fat-loss phases to preserve muscle. This calculator gives you the right target based on your specific situation, so you're not guessing or under-eating the macro that matters most.
Enter your weight in kg.
Pick your activity / goal - sedentary, active, muscle building, fat loss, endurance, or older adult.
See your daily protein target in grams and kilocalories.
Protein need is multiplied by body weight in kg. The RDA (0.8 g/kg) prevents deficiency; higher levels support muscle gain, fat loss with muscle preservation, athletic recovery and the bone-muscle health of older adults.
Daily protein (g) = Weight (kg) × Goal-specific multiplier
Protein recommendations are scaled by body weight: 0.8 g/kg for sedentary (RDA, minimum), 1.0-1.2 g/kg for general health, 1.4-1.6 g/kg for active/recreational fitness, 1.6-2.0 g/kg for muscle building, 1.8-2.2 g/kg for fat loss (higher to preserve muscle in deficit), 1.2-1.6 g/kg for endurance athletes, 1.2-1.6 g/kg for older adults (to combat sarcopenia). Multiply by your weight in kg for daily grams.
Distribution matters as much as total. Spread protein across 4-5 meals of 20-40 g each rather than one massive serving. Muscle protein synthesis (MPS) maxes out at 30-40 g per meal for most adults; excess in a single meal gets oxidised or stored as fat. Older adults need 30-40 g per meal due to 'anabolic resistance' - their MPS response is blunted, so they need more per meal to trigger muscle synthesis.
Indian vegetarian diets often fall short - typical lacto-vegetarian intake is 40-60 g/day where 100-140 g would be ideal for active adults. Plant proteins (dal, paneer, soya, nuts) work but require combining sources for complete amino acid profiles. Dal + rice provides complete protein; chickpea + chapati does too. Adding paneer, milk, eggs (lacto-ovo), and whey supplements makes hitting targets straightforward.
Target: 70 × 1.8 = 126 g protein/day. Split into 4 meals: 30 g per meal. Day: 4 eggs (24 g) + paneer paratha (15 g) breakfast, dal-rice-chicken (40 g) lunch, almonds + whey shake (30 g) snack, fish/paneer + sabji (30 g) dinner = 139 g total. Easy with planning.
Target: 60 × 1.8 = 108 g/day. Distribute as: 25 g breakfast (greek yogurt + 2 eggs), 30 g lunch (chicken + dal), 20 g snack (paneer/whey), 30 g dinner (fish + sabji). Higher protein during fat loss preserves muscle and increases satiety.
Not in healthy adults. Numerous studies show no kidney harm at 2-3 g/kg in healthy people. Those with existing kidney disease need to restrict - speak to a nephrologist.
Slightly. Plant proteins are lower in some essential amino acids (lysine, methionine). Add 10-15% extra and combine sources - dal+rice, chickpeas+chapati, tofu+nuts.
No. Real food (paneer, eggs, chicken, fish, dal, milk) covers needs. Whey is a convenient supplement when food is unavailable or you train fasted.
20-40 g per meal absorbs efficiently. Spreading protein across 4 meals beats stuffing it all into one. Older adults need 30-40 g per meal to overcome anabolic resistance.
Breakfast: 4 eggs + paneer paratha. Lunch: dal + sabji + curd + chapati. Snack: handful of almonds + protein shake. Dinner: chicken/fish/paneer + sabji. Easily hits 100-120 g.
Only if you exceed your calorie maintenance. Protein is highly satiating and has the highest thermic effect (20-30% of kcal lost to digestion), making it the best macro for fat loss.
Body composition, daily energy needs and pregnancy timelines all rest on formulas validated across millions of people, but no single number tells the whole story. The values from this calculator are point estimates with a known margin of error - body fat from skinfold or US Navy method has roughly a ±3% standard error compared to a DEXA scan, and BMR can vary ±10% person to person at the same height and weight. Use these numbers to track trends week over week, not to chase decimal precision day to day.
Pair this tool with the BMR, TDEE, calorie and macro calculators to turn a single measurement into an actionable plan. None of these tools are a substitute for a qualified doctor, registered dietitian or certified strength coach - but they remove the busywork so you spend more time on training and recovery, less on math.
The Protein Calculator is part of the Health & Fitness suite on Online Calculator Tools, alongside 6 related calculators. All tools share the same UI patterns, the same privacy-first rendering (nothing is sent to a server), and the same commitment to showing the formula and assumptions behind every result.
