Chemistry calculator
How it worksMolar mass, balancing equations, limiting reagents and dilutions, with the working shown.
Capitals matter: Co is cobalt, CO is carbon monoxide. Hydrates: use · or a full stop (CuSO4.5H2O).
Use -> or = for the arrow and + between substances. Ions: add the charge with ^, like Fe^3+ or SO4^2-.
Dilution: C₁V₁ = C₂V₂
Fill in any three, and leave the one you want empty.
Molarity: mass ↔ concentration
Fill in the formula (or molar mass) and any two of the other three.
Serial dilution
Worked out in your browser. Atomic masses are IUPAC standard atomic weights.
How it works & questions
How it works
- 1
Molar mass
Type a formula like CuSO4·5H2O to get its molar mass, % by mass, and convert grams, moles and particles.
- 2
Balance and react
Balance any equation with the algebra shown, then find the limiting reagent, leftovers, theoretical and percent yield.
- 3
Make up solutions
C₁V₁ = C₂V₂, the mass to weigh out for a molarity, and serial dilution tables with what to pipette.
Questions
Which atomic masses does it use?
IUPAC standard atomic weights, the same values printed in most textbooks (for example C = 12.011, O = 15.999).
How do I type charges and hydrates?
Charges go after a ^, like Fe^3+ or SO4^2-. Hydrates use a dot: CuSO4·5H2O or CuSO4.5H2O.
Why does it say capitals matter?
Co is cobalt but CO is carbon monoxide. Element symbols always start with a capital letter.
Does it show the working?
Yes. Each part shows the steps, so you can follow them or copy the method into your lab report.