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iU calculator for HGH and HCG

10 IU in 1 mL = 10 IU/mL, so 2 IU is 0.2 mL = 20 units on a U-100 syringe.

IU measures biological activity, not mass. Somatropin has a fixed standard (3 IU = 1 mg); hCG does not, so its vial and draw are both entered in IU.

mL
syringe · picked to fit the draw
price, vial size and certificate correction
USD
mL

Most 2–15 mg vials hold 3 mL.

Somatropin is 3 IU per mg. Leave empty to work in IU only.

draw 20 units

0.2 mL on a 0.3 mL U-100 syringe

concentration
10 IU/mL
per unit
0.1 IU per unit
full draws per vial
5
cost per draw
—
051015202530
exactly on the 20 mark · 0.2 mL
the working
  1. 10 IU ÷ 1 mL = 10 IU/mL
  2. 2 IU ÷ 10 IU/mL = 0.2 mL
  3. 0.2 mL × 100 = 20 units on a 0.3 mL U-100 syringe
  4. 10 IU ÷ 2 IU = 5 → 5 full draws

If this is a prescription, the dose and volume on your pharmacy label take priority. Ask your pharmacist about any mismatch.

updated Nov 4, 2026 · exact arithmetic, checked against 21 worked cases

somatropin 3 IU = 1 mg · hCG in IU only

IU chart

IU per 10 units by vial and water
vial1 mL2 mL5 mL
10 IU HGH (3.33 mg)10 IU/mL
10 units = 1 IU		5 IU/mL
10 units = 0.5 IU		2 IU/mL
10 units = 0.2 IU
12 IU HGH (4 mg)12 IU/mL
10 units = 1.2 IU		6 IU/mL
10 units = 0.6 IU		2.4 IU/mL
10 units = 0.24 IU
15 IU HGH (5 mg)15 IU/mL
10 units = 1.5 IU		7.5 IU/mL
10 units = 0.75 IU		3 IU/mL
10 units = 0.3 IU
36 IU HGH (12 mg)36 IU/mL
10 units = 3.6 IU		18 IU/mL
10 units = 1.8 IU		7.2 IU/mL
10 units = 0.72 IU
5,000 IU hCG5000 IU/mL
10 units = 500 IU		2500 IU/mL
10 units = 250 IU		1000 IU/mL
10 units = 100 IU
10,000 IU hCG10000 IU/mL
10 units = 1000 IU		5000 IU/mL
10 units = 500 IU		2000 IU/mL
10 units = 200 IU

Somatropin: WHO 2nd International Standard 98/574, 3.0 IU per mg. hCG potency is set by bioassay, so it has no fixed mg equivalent.

the arithmetic

formulas

  • concentration = amount in the vial ÷ water added (mg/mL)
  • mL per draw = amount per draw ÷ concentration
  • syringe units = mL × 100 (U-100) or × 40 (U-40)
  • water to add = vial amount × units ÷ (amount per draw × 100)
  • cost per draw = vial price × amount per draw ÷ vial amount

Worked: 10 mg ÷ 2 mL = 5 mg/mL; 0.25 mg ÷ 5 = 0.05 mL; × 100 = 5 units.

what the numbers mean · where they come from

terms and sources

  • Label amount or measured amount. The calculator starts from the amount printed on the vial. A lot certificate’s measured content (net peptide content, in mg) can replace it for the vial that was tested. HPLC purity is a share of peak area, not a mass, so a purity-only correction is shown as an estimate. See HPLC, certificate of analysis and how to read a peptide COA.
  • Concentration. Amount in the vial ÷ water added. Terms: reconstitution, bacteriostatic water, lyophilized.
  • Syringe units. A volume: 0.01 mL per unit on a U-100 syringe, 0.025 mL on U-40. Units say nothing about the compound until the concentration is known.
  • Cost per draw. Vial price × amount per draw ÷ vial amount, from the price per mg of a current offer. Price history: peptide price tracker.

Arithmetic only, on the numbers entered. Amounts from labels or trials are cited references, not recommendations; PeptideTech does not give personal use instructions and does not test products.

short answers

calculator questions

How many mg is 10 IU of HGH?
3.33 mg: somatropin is standardised at 3 IU per mg (WHO 2nd International Standard 98/574).
How do I calculate hCG in units?
Enter the vial (for example 5,000 IU) and the water; 5,000 IU in 5 mL is 1,000 IU/mL, so 250 IU is 0.25 mL = 25 units on a U-100 syringe.
Are IU and insulin syringe units the same?
No. IU measures biological activity; syringe units measure volume (0.01 mL each on U-100). The calculator converts IU to volume through the concentration.

more calculators

related

Volume and concentration arithmetic for laboratory reconstitution; not medical advice. API: /api/calc. Syringe scales: 0.3 mL U-100, 0.5 mL U-100, 1 mL U-100, 0.5 mL U-40, 1 mL U-40, 1 mL syringe, 3 mL syringe.