Final volume & comparison
Work backwards from a known amount and desired U-100 marking. Compare the concentration and markings for three final-volume scenarios.
Illustrative defaults only. This tool performs arithmetic and does not choose a dose, regimen or preparation method.
Your scenario
Replace the example with values you already know. Results update as you type.
Compare final volumes
Optional: compare up to three final volumes. Leave unused fields blank. Comparisons do not change the main calculation or an existing solution.
The numbers, explained.
| Final volume | Concentration | Target volume | U-100 units | Capacity check | Vial volume limit |
|---|---|---|---|---|---|
| 1 mL | 5 mg/mL | 0.05 mL | 5 | Within capacity | Within entered limit |
| 2 mL | 2.5 mg/mL | 0.1 mL | 10 | Within capacity | Within entered limit |
| 3 mL | 1.666667 mg/mL | 0.15 mL | 15 | Within capacity | Within entered limit |
Swipe the table sideways to see every column.
Planning only: this is final solution volume, not an instruction for how much diluent to add. It does not change the concentration of an existing solution.
Check the formulas
Final volume = (10 ÷ 100) × 5 ÷ (250 ÷ 1,000) = 2 mL
Comparison: concentration = mass ÷ final volume; target volume = target mass ÷ concentration.
Final volume & comparison
PEPTIDE — Final volume & comparison Created: Not recorded · Math v1.1 Illustrative example — not a suggested dose INPUTS Total mass / mass per vial (mg): 5 Known amount (mcg): 250 U-100 markings (units): 10 Syringe capacity (mL): 1 Vial volume limit (mL): 3 Comparison 1 (mL): 1 Comparison 2 (mL): 2 Comparison 3 (mL): 3 RESULTS Required final volume: 2 mL Resulting concentration: 2.5 mg/mL Target volume: 0.1 mL · 10 units Final volume | Concentration | Target volume | U-100 units | Capacity check | Vial volume limit 1 mL | 5 mg/mL | 0.05 mL | 5 | Within capacity | Within entered limit 2 mL | 2.5 mg/mL | 0.1 mL | 10 | Within capacity | Within entered limit 3 mL | 1.666667 mg/mL | 0.15 mL | 15 | Within capacity | Within entered limit FORMULAS Final volume = (10 ÷ 100) × 5 ÷ (250 ÷ 1,000) = 2 mL Comparison: concentration = mass ÷ final volume; target volume = target mass ÷ concentration. LIMITATIONS Planning only: this is final solution volume, not an instruction for how much diluent to add. It does not change the concentration of an existing solution. Arithmetic only. U-100 = 100 units/mL. No dose or treatment recommendation.