Free Magnesium Needs Calculator

Calculate your recommended daily magnesium intake based on age.

years
mg

Recommended Magnesium

420 mg/day

Intake Gap120 mg
Percentage of RDA Met71 %

Recommended Magnesium vs Age

Magnesium RDA

Magnesium supports over 300 enzymatic reactions including energy production, muscle function, and blood sugar regulation.

RDA by Age (Male)

AgeRDA 1-3 years80 mg 4-8 years130 mg 9-13 years240 mg 14-18 years410 mg 19-30 years400 mg 31+ years420 mg

Example Calculation

A 35-year-old currently consuming about 300 mg of magnesium daily.

  1. 01RDA for male 31+ = 420 mg
  2. 02Gap = 420 - 300 = 120 mg
  3. 03Percentage met = 300 / 420 x 100 = 71%

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