🧮 Universal Dose Calculator
1. Set the medication concentration
2. Enter the desired dose (any unit)
3. U-100 syringe (1 ml = 100 IU)
💡 Drag the slider to adjust the dose on the syringe
📖 Quick guide
The IU marking on U-100 insulin syringes is a measure of volume: 100 IU = 1 ml. To convert a dose in mg to IU, you must know the solution concentration (mg/ml).
Formulas: volume (ml) = dose (mg) ÷ concentration (mg/ml) • IU = volume (ml) × 100. Example: a solution with 60 mg in 2 ml has a concentration of 30 mg/ml; a 2.5 mg dose equals 0.083 ml = 8.3 IU.
Attention: the same mg dose occupies different volumes depending on each product's concentration. Always check your medication label and follow your prescribing physician's guidance.
❓ Frequently asked questions
What does IU mean on the syringe?
IU (International Unit) on a U-100 syringe is a volume graduation: each IU equals 0.01 ml. The mg value depends on the solution concentration.
Why do I need the concentration?
Because mg is mass and IU/ml is volume. Without the concentration (mg/ml) no conversion is possible — the same IU count can contain completely different amounts of active ingredient.
Does this calculator replace medical advice?
No. It is strictly educational. Dose, frequency and administration must be defined by your physician based on your individual assessment.
Does it work for any injectable medication?
The math (mass ÷ concentration = volume) holds for solutions in general, but each medication has its own preparation and administration particularities. Always confirm with the professional who prescribed it.
📚 References
- ISMP — Institute for Safe Medication Practices. Guidelines for safe use of insulin and U-100 syringes.
- ANVISA — Brazilian Health Regulatory Agency. Labeling and concentration of injectable medications.
- American Diabetes Association. Standards of Medical Care in Diabetes — insulin delivery devices.
- WHO — Definition of International Units and biological standardization.
Educational content based on scientific evidence
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