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20 mg to units

Units and mL measure volume, mg and mcg measure amount, so the conversion depends on how concentrated the vial is. The answer below states the vial and water it assumes; change them in the converter.

Medically reviewed by Juan Pablo Frías, MD · · DisclosureUpdated Educational use only
20 mg =
100units
on a U-100 syringe at 20 mg/mL (60 mg + 3 mL water)Shown on a 1 mL (100-unit) U-100 syringe: 100 units = 1 mL.

The working

60 mg ÷ 3 mL = 20 mg/mL20 mg ÷ 20 mg/mL = 1 mL1 mL × 100 = 100 units

This uses 60 mg + 3 mL of bacteriostatic water as an example. Your vial label and the water you added decide the real answer.

Math only. It does not recommend a dose.

Convert another amount (mg to units)

mg
mg
mL
Syringe scale
Result
100units
60 mg ÷ 3 mL = 20 mg/mL20 mg ÷ 20 mg/mL = 1 mL1 mL × 100 = 100 units

mg to units: nearby values

Each column is a different concentration (vial mg ÷ water mL). The highlighted row is 20 mg.

mg to units by concentration (U-100 unless stated)
mg2.5 mg/mL5 mg + 2 mL5 mg/mL10 mg + 2 mL10 mg/mL20 mg + 2 mL20 mg/mL60 mg + 3 mL · used above
0.25 mg1052.51.25
0.5 mg201052.5
1 mg4020105
2 mg80402010
2.5 mg100502512.5
5 mg200*1005025
7.5 mg300*150*7537.5
10 mg400*200*10050
15 mg600*300*150*75
20 mg800*400*200*100
* More than a 1 mL (100-unit) syringe holds.

More conversions

mg to units
0.25 mg0.5 mg1 mg2 mg2.5 mg5 mg10 mg20 mg
20 units to mg20 units to mL5 units to mg10 units to mg25 units to mg30 units to mgPeptide reconstitution calculatorVial, water and dose to unitsAll convertersmcg, mg, mL and units

Sources

  1. 1Metric (SI) Prefixes (NIST Reference on Constants, Units, and Uncertainty)National Institute of Standards and Technology (NIST) · 2025physics.nist.govAccessed 2 Oct 2026
  2. 2BASAGLAR (insulin glargine) injection, prescribing information (DailyMed)U.S. Food and Drug Administration / DailyMed (Eli Lilly and Company label) · 2026dailymed.nlm.nih.govAccessed 2 Oct 2026

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