Chemistry
Reconstitution Calculator
Work out the diluent volume that turns a weighed powder into a solution of the concentration you want.
Your inputs
Change any value to update the result instantly.
Diluent volume to add
10 mL
Concentration if you use your own volume
50 mg/mL
Concentration in g/L
50 g/L
Mass in one millilitre
50 mg
This is the chemistry relation mass ÷ volume for laboratory stock solutions. It is not medical dosing guidance — always follow the product label and a qualified professional for anything given to a person or an animal.
What this calculator does
Calculates the diluent volume that turns a weighed powder into a laboratory stock solution of a chosen concentration.
What your result means
The volume of solvent that gives the requested mass of solute in every millilitre of the finished solution.
Formula and working
V = m ÷ C ; C = m ÷ V
- 1
Collect the inputs
Mass of powder (m) = 500 mg; Concentration wanted (C) = 50 mg/mL; Or a volume you plan to use = 10 mL
- 2
Apply the formula
V = m ÷ C ; C = m ÷ V
- 3
Result
Diluent volume to add = 10 mL
Frequently asked questions
Symbols and assumptions
- m
- Mass of powder
- C
- Concentration wanted
- V
- Volume of diluent
- • The powder dissolves completely.
- • The powder contributes negligible volume.
Sources and review
Reviewed 2026-09-22 · Next review 2027-09-22
- • This is a chemistry mass-per-volume relation for laboratory stocks. It is not medical or veterinary dosing guidance; follow the product label and a qualified professional.
Important limitation
This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.
Report a mistake or request an improvement
Tell us if a formula, unit, explanation, or result needs attention. Your message will include this calculator’s name and page.
Related calculators
Activity Coefficient Calculator
Estimate the activity coefficient of an ion in a dilute solution using the Debye-Hückel limiting law.
Alligation Calculator
Work out how much of a weak and a strong solution to mix to reach a target strength.
Bleach Dilution Calculator
Find how much concentrated bleach and water to combine for a target available-chlorine strength.
Buffer Capacity Calculator
Measure how much strong acid or base a buffer absorbs for each unit of pH change.
Dilution Factor Calculator
Work out the dilution factor between a stock solution and the diluted solution you prepare.
Mass Percent Calculator
Find what share of a mixture's mass comes from one component.