Milligrams to Grams Converter

1. Core Formula

g = mg ÷ 1000 (exact). Reverse: mg = g × 1000. Also: mcg = mg × 1000.

2. Flow

1. Input milligrams.
2. Divide by 1000 → grams.
3. Round for display only.
4. Cross-check: 1000 mg = 1 g.

3. Sanity Checks

• 1 mg = 0.001 g
• 250 mg = 0.25 g
• 500 mg = 0.5 g
• 1000 mg = 1 g

4. Shortcuts

• Shift decimal three places left for mg → g.
• Use thousand separators for big mg numbers.
• Keep integers in mg for exactness; convert to g for UI.

5. Pitfalls

• Don’t confuse mg with mcg (×1000 smaller).
• Avoid early rounding in chained calculations.
• Label units consistently (mg/g/µg).

6. Micro Examples

7. Mini FAQ

• Exact factor? 1 g = 1000 mg.
• Decimals? 0–3 dp typical for grams; more for lab work.
• Storage? Prefer storing integers in mg to avoid floating-point drift.

8. Action Tip

When processing many values, convert mg → g at render time; keep raw data in mg or µg for exact arithmetic.