Seller Utility Tools
High precision, free calculation engines designed to streamline daily cross-border operations, freight packing, ad budgeting, and margin protection.
CBM Calculator
Calculate total cubic meters (CBM), cubic feet (CFT), and gross weight for multiple carton sizes. Estimate container space utilization for 20GP, 40GP, and 40HQ.
Dimensional Weight Calculator
Calculate volumetric weight and billable weight across DHL/FedEx (1:5000), air freight (1:6000), and sea shipping. Supports 50% split ratio calculations.
ACOS & ROAS Calculator
Calculate advertising ACOS, ROAS, break-even threshold based on product COGS and platform fees, plus target ACOS and whole-store TACOS.
Landed Cost Calculator
Aggregate manufacturing costs, shipping, customs duties, insurance, and prep fees to calculate the true landed cost per unit.
Amazon FBA Profit Calculator
Estimates US FBA fulfillment fees, category referral rates, low-inventory fees, and seasonal storage based on 2025-2026 rates.
TikTok Shop Profit Calculator
Calculate TikTok Shop US net margins factoring in category referral fees (mostly 6.0%), zero fixed per-order fee, creator commissions, and sample costs.