Dynamic Metal Price Calculator

Real-time Jewellery Pricing for WooCommerce

Dynamic Metal Price Calculator automatically computes final product prices in WooCommerce based on current metal rates (gold / silver), product weight, wastage, per-gram making charge and a markup percentage. The plugin detects the store currency automatically and displays labels with the correct currency symbol — it does not perform FX conversions of metal rates (rates are entered in the store currency).

Admin Metal Rates page

Manage your plugin configuration from a clean settings panel. Here you can set the current metal prices, enable auto currency detection, and adjust markup, wastage, and making charges. The plugin automatically fetches the right currency format for your store visitors.

WooCommerce Product Edit Screen

While adding or editing a product in WooCommerce, you’ll see new fields like metal type, base price, weight, wastage, making charge, and markup. Just leave the regular WooCommerce price blank — the plugin calculates the price dynamically based on today’s gold or silver rates.

Dynamic Price Display on Frontend

On the product page, customers will see a real-time calculated price. The formula:
Final Price = Base Price + (Metal Price × Weight) + Wastage + Making Charge + Markup
This ensures your prices always reflect live market rates, providing trust and transparency to buyers.

Exact Math Formula

how final price is calculated

Pricing Formula (Step‑by‑Step)

1) Base determination

base = (base_price is set) ? base_price : (metal_rate × weight)

2) Apply wastage (%)

after_wastage = base + (base × (wastage / 100))

3) Add making charge (per g)

after_making = after_wastage + (making_charge × weight)

4) Apply markup (%)

final_price = after_making + (after_making × (markup / 100))

5) Rounding

Final value is rounded to two decimal places for display/currency precision.

Worked Numeric Example (Digit‑by‑Digit)

metal_rate = 85.50 (per gram)
weight = 10.00 g
base_price = not set (compute from metal)
wastage = 2.00%
making_charge = 5.00 (per g)
markup = 10.00%

Step 1 — base:
base = metal_rate × weight = 85.50 × 10.00 = 855.00

Step 2 — wastage:
after_wastage = base + (base × (wastage / 100))
wastage portion = 855.00 × (2 / 100) = 17.10
after_wastage = 855.00 + 17.10 = 872.10

Step 3 — making charge:
making total = making_charge × weight = 5.00 × 10.00 = 50.00
after_making = 872.10 + 50.00 = 922.10

Step 4 — markup:
markup portion = after_making × (markup / 100) = 922.10 × 0.10 = 92.21
final_price = after_making + markup portion = 922.10 + 92.21 = 1,014.31

Step 5 — rounding: final price = 1,014.31 (rounded to 2 decimals).

Notes & Best Practices

If you want to price in a different currency than your metal rate source, convert the metal rates externally and enter the converted values. The plugin does not auto‑fetch FX rates.For multi‑currency storefronts, maintain per‑store metal rates. Leave the regular price blank on products where you want the computed price to take precedence. If a sale price is set, the plugin temporarily uses it as the base for the computation (then restores state).

v1.0.2 — Highlight

Fixed multiple bugs; added automatic currency symbol detection; improved escaping and translation context; updated admin UI labels.