mg to Units Reference Chart: Concentration Matters
Compare fictional concentrations on a U-100 scale. Every row states its assumptions so the chart explains arithmetic without prescribing a dose.
Last updated: 2026-10-10
Read the assumptions before the numbers
This is an educational chart, not a semaglutide or tirzepatide dosing schedule. Every row uses a fictional 1 mg amount and U-100 scale. The concentrations are chosen to show the relationship and are not standard formulations. Use your current label and prescribed amount in the calculator instead of choosing a chart row.
| Assumed concentration | Fictional amount | Calculated volume | U-100 units |
|---|---|---|---|
| 2.5 mg/mL | 1 mg | 0.4 mL | 40 |
| 5 mg/mL | 1 mg | 0.2 mL | 20 |
| 10 mg/mL | 1 mg | 0.1 mL | 10 |
Why the answer changes
The amount stays at 1 mg. Doubling concentration halves the liquid volume and the U-100 unit count. This is why an answer found for someone else's vial can be incorrect for yours. The ingredient name alone does not determine concentration.
Check one row yourself
For the middle row: 1 ÷ 5 = 0.2 mL, then 0.2 × 100 = 20 units. In reverse, 20 ÷ 100 × 5 = 1 mg. The units cancel correctly in both directions.
Volume-only reference
On a verified U-100 scale, 0.01 mL = 1 unit, 0.1 mL = 10 units and 0.5 mL = 50 units. These volume identities do not tell you how many mg are present. Changing the scale changes the unit number.
Four reasons not to use a row directly
- Your vial's concentration differs or has changed with a refill.
- Your prescription specifies a different amount.
- Your syringe uses another scale, or it is marked directly in mL.
- The calculated volume exceeds capacity or falls between available ticks.
Use the label-reading guide to identify inputs, the syringe guide to verify the device, and the checking guide to assess warnings. The calculator uses your own numbers and shows its formula.
Is there a universal GLP-1 units chart?
No. A universal chart would need to assume concentration, amount and device scale. This table makes those assumptions visible so you can understand the mathematics, not treat the table as a prescription.