What this calculator does
This protein intake calculator is built for the moment you need a defensible number — quoting a client, comparing options, or checking someone else's math — not a generic estimate.
Protein needs depend on activity level and goals.
How to use the Protein Intake Calculator
- Enter your values in the fields on the left.
- Results update automatically.
- Use the action buttons to copy, share or print.
The formula
g/day = weight (kg) × factor (0.8–2.2)
Worked example
70 kg × 1.8 = 126 g for muscle gain.
Common mistakes
- Underrating for older adults
- Timing worries (spread across day)
- Only focusing on shakes
When to use it
Use to plan meals and shakes.
Pro tips for the Protein Intake Calculator
- Save your favorite scenarios by clicking the star icon — they're stored locally, no account needed.
- For big decisions, run best-case, expected, and worst-case scenarios and compare the breakdowns side by side.
- Copy the result to paste it directly into email, Notion, or a spreadsheet cell.
Frequently asked questions
›Too much protein?
Healthy adults tolerate up to 3 g/kg.
›Best sources?
Chicken, eggs, fish, dairy, legumes, tofu.
›Meal timing?
20–40 g every 3–5 hours.
›Vegan?
Combine sources for complete amino acids.
›Kidneys?
High protein is safe for healthy kidneys.
›How accurate is this protein intake calculator?
The formulas match the standard textbook definition shown above. Rounding is applied only for display; underlying computation uses full floating-point precision. For regulated health & fitness decisions, always confirm with a qualified professional.
›Can I use this on mobile?
Yes — the protein intake calculator is fully responsive, and results, charts, and the share button all work on phones and tablets.
Embed this calculator
Drop the Protein Intake Calculator into your own site or blog post. Free to use — a small “Powered by CalcPilot” link is appreciated.
<iframe src="https://calcpilot.tools/calculators/protein-intake-calculator?embed=1" width="100%" height="720" style="border:1px solid #e5e7eb;border-radius:12px;max-width:720px;" loading="lazy" title="Protein Intake Calculator — CalcPilot"></iframe>Related calculators
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