TOOLS
Simple calculations.
Concentration, volume and units. Arithmetic only — no dose recommendations.
Results update as you type. Enter your own quantities; no target amount is preselected.
Your inputs. Clear results.
Complete the fields to see the concentration, conversion, or volume update here.
Formulas & rounding
The formulas, made visible.
final volume = starting concentration × starting volume ÷ target concentration; additional liquid = final volume − starting volume
Decimal inputs use integer-ratio arithmetic. Display values round to six decimal places (four for syringe markings; nine for mass conversion). Rounding does not establish measurement accuracy.
Arithmetic only. Dose, stability, sterility and compatibility are not assessed. Research vials are not intended for personal use.