Stoichiometry: Lab Calc

Calculate molar mass, balance chemical equations, convert common lab quantities, and reuse local reagent data—all in one focused chemistry tool.

Stoichiometry: Lab Calc is a focused chemistry calculator for study, lab preparation, and everyday quantitative work. Enter a few known values to obtain clear, easy-to-review results. Core calculations work offline.

SINGLE-SUBSTANCE CALCULATIONS

• Parse chemical formulas and calculate molar mass• Convert between sample mass, substance mass, amount of substance, and purity• Calculate molarity, mass fraction, volume, and density• Supports common formula notation, including parentheses and hydrates

REACTION CALCULATIONS

• Enter and automatically balance a chemical equation• Choose a reference substance and calculate quantities from stoichiometric ratios• Work with equivalents, purity, concentration, volume, and density• Save result tables as images

CUSTOM REAGENT LIBRARY

• Store reagent names, formulas, brands, catalog numbers, images, and common properties• Search by name, formula, brand, or catalog number• Apply saved reagents directly to calculations• Back up and restore local reagent records

Reagent data stays on your device. No account is required, and experimental data is not uploaded.

The custom reagent library is available as a one-time in-app purchase that permanently unlocks the feature.