Observed arrival · 2026-09-04

SkuMath: The Math Behind Every SKU

skumath.com Observed source

Editorial interest 79/100 Selection signal · not a rating of the site

A free suite of 24 ecommerce calculators covering marketplace fees, profit, advertising, inventory, pricing, and store metrics.

Landing page captured for the 2026-09-04 issue.

Field notes

SkuMath organizes 24 calculators into Profit & Pricing, Advertising, Inventory, and Store Metrics rather than presenting them as isolated tools. The listed calculations range from Amazon FBA fees and print-on-demand profit to safety stock, customer lifetime value, cart abandonment, and return rate. The site says each calculator exposes its formula and cautions that marketplace fee rates change, making the outputs planning estimates rather than accounting or legal advice.

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