Milligrams ➝ Micrograms: Fast, Exact, Reliable
1. Core Formula
mcg = mg × 1000 (exact). Reverse: mg = mcg ÷ 1000. Also: g = mg ÷ 1000.
2. Flow
- Input milligrams.
- Multiply by 1000 → micrograms.
- Round only for display.
- Cross-check: 5 mg = 5000 mcg.
3. Sanity Checks
- 0.1 mg = 100 mcg
- 0.5 mg = 500 mcg
- 1 mg = 1000 mcg
- 10 mg = 10,000 mcg
4. Shortcuts
- Shift decimal three places right for mg → mcg.
- Use integer math (store in mcg) for exactness.
- Apply locale formatting for readability.
5. Pitfalls
- Don’t confuse mcg with mg (×1000 difference).
- Avoid early rounding in medical dose chains.
- Always include unit labels in outputs.
6. Micro Examples
0.1 mg
= 100 mcg
1 mg
= 1,000 mcg
5 mg
= 5,000 mcg
10 mg
= 10,000 mcg
7. Mini FAQ
- Exact factor? 1 mg = 1000 mcg.
- Decimals? Use 0–2 dp for mcg totals; more if needed scientifically.
- Storage? Prefer integers in mcg for lossless arithmetic.
8. Action Tip
For dosing tools, keep values in mcg internally and convert to mg or g only at the UI to avoid rounding errors.