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Health & Fitness Calculator
Protein Intake Calculator: Daily Protein Grams by Goal
Estimate daily protein intake by body weight, goal, meals, snacks, and calories, with protein grams, recommended range, calories from protein, and per-meal targets.
Protein target
Protein ranges by goal
The calculator starts with body weight and adjusts the planning range by goal.
- Basic adult baseline can start around 0.8 g/kg/day.
- Active lifestyle and strength training often use higher ranges.
- Fat loss plans may use higher protein for satiety and lean mass support.
Protein calories and meal split
Protein provides about 4 calories per gram, so the result can be compared with daily calories.
- Protein calories = protein grams x 4.
- Per serving target = daily target / meals and snacks.
- Even distribution can make the target easier to hit.
Safety notes
Protein needs are personal and can change with health status.
- Kidney disease, liver disease, pregnancy, and medical diets require professional guidance.
- Athletes may need individualized targets.
- Use this as a planning estimate, not a prescription.
Related health calculators
Use these pages to connect protein with calories, body weight, and hydration.
Protein Intake Calculator FAQ
How much protein do I need per day?
A common baseline for healthy adults is about 0.8 g/kg/day, while active people, strength training, or fat loss goals may use higher planning ranges.
How do I calculate protein by body weight?
Convert body weight to kilograms, then multiply by a target range such as 0.8 to 2.2 grams per kilogram depending on goal and context.
How many calories are in protein?
Protein provides about 4 calories per gram.
Should I split protein across meals?
Many people find it easier to meet their target by spreading protein across meals and snacks.
Is this medical nutrition advice?
No. It is a general planning calculator and does not replace advice from a clinician or registered dietitian.
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