Shipping Calculator connects Shopify checkout to live Australia Post domestic parcel services. Merchants can set a default shipping postcode, parcel dimensions, and fallback weight, then apply a global markup, per-service overrides, and optional minimum and maximum rate limits. Merchants can choose which discovered Australia Post service codes are shown at checkout. Built-in preview, reports, and activity logs help validate settings and monitor rate decisions.

• Return live Australia Post domestic parcel rates in Shopify checkout.
• Apply global markup, per-service overrides, and optional min and max limits.
• Choose which Australia Post service codes are shown at checkout