- For Indians
| Group | Particulars | RDA |
| Infants | 0-6 months | 65 mg/kg |
| 6-12 months | 60 mg/kg | |
| Children | 1-3 years | 0.7 |
| 4-6 years | 1 | |
| 7-9 years | 1.2 | |
| Boys | 10-12 years | 1.3 |
| Girls | 10-12 years | 1.2 |
| Boys | 13-15 years | 1.5 |
| Girls | 13-15 years | 1.2 |
| Boys | 16-18 years | 1.6 |
| Girls | 16-18 years | 1.2 |
- For U.S. residents
| Life Stage Group | RDA (mcg/d) |
| Infants | |
| 0-6 months | 0.3* |
| 7-12 months | 0.4* |
| Children | |
| 1-3 y | 0.5 |
| 4-8 y | 0.6 |
| Males | |
| 9-13 y | 0.9 |
| 14-18 y | 1.3 |
| Females | |
| 9-13 y | 0.9 |
| 14-18 y | 1 |
| Pregnancy | |
| £18 y | 1.4 |
| Lactating | |
| £18 y | 1.6 |
*Al, adequate intake; RDA, recommended dietary allowance.