Gold Composition Adjustment Calculator

Compare an original alloy recipe with a revised recipe and calculate exactly how much each component must increase or decrease for the selected batch size.

Composition Adjustment Formula

Original Mass = Batch Weight × Original %

Revised Mass = Batch Weight × Revised %

Adjustment = Revised Mass − Original Mass

Positive adjustments indicate additional material required; negative adjustments indicate material that must be reduced from the original composition.

Why Percentage Changes Need Mass Calculations

Changing a recipe from 20% to 25% is not enough information to determine the material quantity until the batch weight is known. This tool translates composition percentages into actual grams.

The calculator assumes the batch weight remains constant.

Frequently Asked Questions

Can I use three alloy components?

Yes. The three rows are independent and the old and new percentages should each form the composition you intend to model.

What if the revised percentages do not total 100%?

The tool flags the composition rather than silently creating a mass imbalance.