Description
A custom WooCommerce shipping method with a real rule engine - free, and it works on the new Cart/Checkout blocks.
WooCommerce ships with Flat Rate, Free Shipping, and Local Pickup - and nothing else. If your shipping cost depends on weight, dimensions, or cart total, your options are: WooCommerce Table Rate Shipping ($99/year subscription), Advanced Flat Rate Shipping ($79/year), WP Sheet Editor ($99/year), Flexible Shipping ($49-99/year), or a wall of custom code. Every option is either paid, aging, or fragile.
Why Smart Shipping Rates beats the alternatives: Smart Shipping Rates is the only free WooCommerce custom shipping method plugin with a proper rule engine supporting weight, all three dimensions individually, largest-any-dimension, cart subtotal, and item count. Rules chain top-to-bottom in add-to-base or override modes. Appears natively in the WooCommerce shipping zone method picker alongside Flat Rate and Free Shipping - no separate checkout modification, no runtime fallback, no compatibility shim.
Full WooCommerce Cart/Checkout blocks compatibility + HPOS
Built on the standard WC_Shipping_Method API - the same API Flat Rate uses. Works on both classic shortcode checkout and the new block-based Cart/Checkout blocks with zero extra configuration. Compatibility declared via WooCommerce FeaturesUtil (HPOS + cart_checkout_blocks).
What you get for free
- Weight-based rules - set cost when cart weight is above, below, between, or exactly matches a value. Reads standard WooCommerce product weight.
- Dimension-based rules - match on largest single length, width, height, or any-of-them across the cart. Uses standard product dimension fields.
- Cart-subtotal rules - different costs based on subtotal thresholds.
- Item-count rules - handle bulk orders ("over 20 items, add $10").
- Two cost modes per rule - Add to base (cumulative surcharges) or Set to (replaces earlier calculations for tiered pricing).
- Six comparison operators - less than, less-or-equal, equals, greater-or-equal, greater than, between.
- Multiple instances per zone - configure "Standard", "Express", "Freight" - each as its own Smart Shipping Rates method with its own rules.
- Card-based rule editor - clean UI inside the WC shipping zone method modal. Add/delete/reorder rules with one click.
- Free-tier cap: 5 rules per method. Pro removes the cap.
Need to show different rates to different customer types? See our guide on WooCommerce shipping rules by role.
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