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Target yield back-calculator

Auto-balance a reaction and back-calculate base and reagent amounts from a target product mass or moles.

All calculations run in your browser; no input values are sent to a server.

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How to use (3 steps)

  1. Enter a reaction and choose the target product and yield.
  2. Select the base reagent and adjust roles, purity, or solution inputs.
  3. Copy the reagent table or share the URL.

Quick examples

Reaction setup

Target and base

Reagent inputs

Density, concentration, mol%, and ppm are advanced fields.

Name Role MW Form Purity % Density Conc (M) Eq mol% ppm

Summary

This result shows the required base amount and reagent amounts for the target yield.

Reagent table

Name Role MW Stoich Eq n (mmol) Mass (g) Volume (mL) Purity %

How it is calculated

    FAQ

    Can I override molar masses?

    Yes. You can edit MW values for each species if needed.

    What if my product is a solution?

    Use the volume or molar unit options and set the product as solution to compute required volumes.

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