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KI Supply Estimator

Calculate exactly how many potassium iodide tablets your household needs. Get product recommendations based on your family size and desired coverage duration.

KI is taken once daily while exposure risk continues. Typical stockpiles cover 2 weeks to 3 months.

Remember: Adults take 130mg daily. Children take 65mg daily. Infants require smaller doses (32mg or 16mg). Always follow official guidance on when to take KI — never preventatively.

How This Works

This calculator helps you determine the total number of potassium iodide tablets needed for your household. It accounts for:

  • Different dose requirements: Adults need 130mg, children 65mg, and infants smaller doses
  • Tablet efficiency: 130mg tablets can be split for children; 65mg tablets require no splitting
  • Duration coverage: Calculate for 14 days (minimum), 30 days, 90 days, or any custom period
  • Cost optimization: Recommendations factor in the most economical way to cover your needs

Daily Dosing Quick Reference

Adults

130 mg per day

Ages 18+, pregnant women, nursing women, and adolescents 12-18 weighing ≥150 lbs.

Children

65 mg per day

Ages 3-12, and adolescents 12-18 weighing <150 lbs.

Infants

16-32 mg per day

1 month-3 years: 32mg. Under 1 month: 16mg. Requires tablet crushing.

Keep Reading

Get the KI Cheat Sheet

Doses, top picks, storage tips — one printable page. Plus stock alerts when products sell out.

Official sources: FDA CDC WHO NRC