Use this chemistry calculator to reproduce a named relationship with explicit quantities and units for study, laboratory planning, or an independent numerical check.

Moles of element A (mol)

Amount of element A.

Moles of element B (mol)

Amount of element B.

Divide two element mole amounts by the smaller one to obtain whole-number-friendly empirical ratios. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Empirical ratio A

Empirical ratio of element A relative to the smaller amount.

Empirical ratio B

Empirical ratio of element B relative to the smaller amount.

• Stoichiometric results assume the balanced reaction, stated purity, and complete conversion to the selected products. Yield, selectivity, side reactions, moisture, and measurement uncertainty must be handled separately.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Check units and significant figures, compare the result with limiting cases, and use measured or source-specific constants where available. Laboratory, safety, and regulatory decisions require validated methods and appropriate uncertainty analysis.

• Empirical Formula From Moles Calculator

  Compute empirical formula element ratios by dividing each element's mole amount by the smallest mole amount.

• Empirical Formula From CO2 and H2O Calculator

  Derive the empirical formula CₓHᵧ from combustion analysis CO₂ and H₂O masses normalized to whole-number ratios.

• Integration Ratio

  Normalize two NMR integrals so the smaller value becomes one and report the proton ratios rounded to two decimals.