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Empirical Formula Calculator
Turn percent composition into the simplest whole-number atom ratio — assuming a convenient 100 g sample.
Calculator
Results update as you type. Every step of the working is shown below.
Examples:
Result
Enter values above — the answer appears here instantly, with full working.
Formula used
assume 100 g → n = m/Aᵣ → divide by smallest → whole-number ratio
Every result substitutes your values into this relation step by step above.
Assumptions
- Percentages are by mass and should total ≈100 % (inputs are normalized automatically).
- Ratios must be close to small whole numbers after scaling — grossly imprecise data is rejected.