Sitemap
Every page on this site
Main calculator
- Percent Yield Calculator. The formula, a step-by-step method, yield benchmarks, worked examples and 18 answered questions.
Yield and efficiency
- Theoretical Yield Calculator. Derive the maximum mass a balanced equation allows from the limiting reagent.
- Actual Yield Calculator. Work backwards from a percentage to the mass you should expect to isolate.
- Reaction Efficiency Calculator. Turn actual and theoretical yield into a classified efficiency score.
- Percent Recovery Calculator. Measure how much material survives a recrystallisation or extraction.
- Percent Purity Calculator. Find what fraction of a weighed sample is actually the compound.
- Percent Error Calculator. Compare a measured result against the accepted value.
- Percent Loss Calculator. Find the mass and percentage a reaction lost against its ceiling.
Stoichiometry and reactants
- Stoichiometry Calculator. Convert reagent mass to product mass through moles and the mole ratio.
- Molar Mass Calculator. Parse any chemical formula and sum its standard atomic weights.
- Mole Ratio Calculator. Scale one substance in a balanced equation to any other.
- Grams to Moles Converter. Convert between mass and amount of substance in either direction.
- How to Balance Chemical Equations. Get the coefficients right before any yield number can mean anything.
- Limiting Reactant Calculator. Find which reagent runs out first and sets the ceiling on the reaction.
- Excess Reactant Calculator. Find how much of the non-limiting reagent is left over after the reaction.
- Reaction Completion Calculator. Find what fraction of the starting material has actually reacted.
Reference and troubleshooting
- Percent Yield Formula. The formula, its three rearrangements, and where each one derives from.
- Percent Yield Equation Explained. Where the equation comes from and why the units cancel to a percentage.
- Percent Yield Worked Examples. Eight problems solved line by line, including the awkward cases.
- Percent Yield Practice Problems. Ten practice problems with a solution you reveal, not one shown by default.
- Percent Yield Worksheets. Fifteen tiered problems and an answer key, formatted to print cleanly.
- Stoichiometry and Yield Guide. The hub page: every tool and reference on the site, in one learning path.
- Why Percent Yield Is Less Than 100%. Eight measurable causes of a low yield, and how to diagnose each one.
Languages
Site information
- About. How the numbers are checked, and the references behind them.
- Contact. Reporting a result you disagree with.
- Terms of use. What an educational reference can be relied on for.
- Privacy. Nothing is collected, and this explains why.
Machine-readable
- sitemap.xml, every URL for search engines.
- robots.txt, crawler directives.
- llms.txt, a plain-text summary of the site for language models.