Categories

Each category groups related calculators. Pick an area to see what's available and what's planned.

Calculators for online marketplace sellers — profit, fees, margins, and break-even math for platforms like Amazon, eBay, Etsy, and Shopify.

Tools for estimating shipping costs, dimensional weight, and package math using your own carrier rates — no live carrier API required.

Volume, container, and freight calculators for planning shipments, pallets, and cargo space.

Markup, margin, discount, and price-point calculators to help set profitable, competitive prices.

ROAS, ACoS, CPC, and break-even advertising calculators for planning and evaluating ad spend.

General business math — VAT/sales tax, break-even, ROI, and everyday finance calculations.