Griffin's Toolkit
Calculators
Convert units, plan a dose, mix a vial, or split a shot across two vials.
Dose → volume
How much liquid to draw for a target dose.
Draw
0.3333 mL
On U-100 syringe
33.333 units
Syringe Visualizer
33.33u — 0.333 mL
Solvent
—
Dose
5 mg
Concentration
15 mg/mL
Est. Doses
—
U-100 insulin syringe (1 mL)
Reconstitution
Mix a powdered vial with bacteriostatic water, then dose.
Concentration
5 mg/mL
Draw
0.05 mL
Units
5
Syringe Visualizer
5u — 0.05 mL
Solvent
2 mL
Dose
250 mcg
Concentration
5 mg/mL
Est. Doses
40
U-100 insulin syringe (1 mL)
Mass converter
Convert between micrograms, milligrams, and grams.
1 mg =
1000 mcg
Quick reference: 1 mg = 1,000 mcg · 1 g = 1,000 mg
Volume ↔ syringe units
U-100 insulin syringe: 100 units = 1 mL.
0.25 mL =
25 units
10 units = 0.10 mL · 25 units = 0.25 mL · 50 units = 0.50 mL
Vial transition
Split a dose between an almost-empty vial and a new one (different concentrations OK).
Current vial is short — split this dose across two vials.
From current vial
0.25 mL (25 u)
From new vial
0.1667 mL (16.667 u)
Delivers 2.5 mg + 2.5 mg = 5 mg total.
Reference only. Always double-check critical doses with a qualified professional. Volume↔units assumes a standard U-100 insulin syringe (100 units = 1 mL).