Free tools

Jewelry Business Tools

Industry-grade calculators and converters for jewelry professionals. No signup required — just open and use.

Pricing Calculator

Calculate retail and wholesale prices from material cost, labor, and markup. The standard formula used by working jewelers.

Material + Labor + Markup

Estimate the melt value and dealer buy price for scrap gold based on weight, karat, and current spot price.

Spot price × Purity × Weight

Convert between US, UK, European, Japanese, and metric ring sizes with a full reference chart and measuring guide.

US · UK · EU · JP · mm

Estimate retail diamond prices based on carat, cut, color, clarity, and shape. Includes lab-grown comparison.

4Cs + Shape + Lab toggle