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BCAA Dose Calculator

Work out bcaa dose instantly with clear inputs, formula shown and shareable results.

About BCAA Dose Calculator

Splits a weight-based branched-chain amino acid dose into its leucine, isoleucine and valine components and checks the leucine threshold.

Formula

BCAA dosing

Total dose = weight x g/kg; leucine = total x leucine parts / total parts; about 2.5 to 3 g of leucine is needed to stimulate muscle protein synthesis

Worked example

With the default values below, BCAA Dose Calculator returns Total branched-chain amino acid dose of 11.25. Change any input above and every figure here is recalculated in your browser.

Inputs used

Weightaccepts 30–200 kg
75 kg
Doseaccepts 0.05–0.3 g/kg
0.15 g/kg
Leucine ratioone of 2:1:1, 4:1:1, 8:1:1
2:1:1

Results

Total branched-chain amino acid dose
11.25 g
Leucine content
5.625 g
Isoleucine plus valine
5.625 g
Leucine threshold
Above the 2.5 g leucine threshold for stimulating muscle protein synthesis

Step by step

  1. 1Values used
  2. 2BCAA dosing
  3. 3Total branched-chain amino acid dose= 11.25 g
  4. 4Leucine content= 5.625 g
  5. 5Isoleucine plus valine= 5.625 g
  6. 6Leucine threshold= Above the 2.5 g leucine threshold for stimulating muscle protein synthesis

Assumptions and limits

  • The result is derived only from the 3 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
  • Figures are rounded for display to 3 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
  • Educational estimate only. Not a substitute for professional clinical judgement, and must not be used to make treatment or dosing decisions.
  • This is an estimate for general information and not professional medical advice. See the full disclaimer for the limits that apply to this kind of calculator.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Educational estimate only. Not a substitute for professional clinical judgement, and must not be used to make treatment or dosing decisions.

Frequently Asked Questions

Are BCAA supplements necessary?

Rarely. Whole protein sources supply all nine essential amino acids, and BCAAs alone cannot build muscle protein.

Why does leucine matter?

It triggers the mTOR pathway, which is why the leucine content rather than total BCAA grams is the meaningful figure.

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