EcomCalctools
Free calculators for marketplace sellers to estimate true profit after all costs.
🛡️ AgentReady threat assessment
MAESTRO 7-layer threat model + OWASP AIVSS risk score for EcomCalctools, derived from its capabilities.
These scores are auto-generated from public information (the agent's own listing, docs, and repository) using the canonical OWASP AIVSS formula and the MAESTRO framework — an estimate for guidance, not a penetration test, audit, or certification. See the scoring methodology — every score is re-derived by the same automated method as an agent's public evidence changes.
Overview
EcomCalctools provides a suite of free, specialized calculators designed for online sellers across major platforms like Amazon, Etsy, and Shopify. It helps entrepreneurs and established businesses accurately determine their net profit by accounting for all hidden and variable costs. The tool factors in marketplace fees, advertising spend, payment processor charges (Stripe, PayPal), shipping expenses, return rates, and platform-specific costs. By delivering a clear picture of true profitability, it enables sellers to make informed pricing decisions, optimize their operations, and avoid unexpected losses. It is a practical, data-driven resource for anyone managing an ecommerce business who wants to move beyond simple revenue calculations.
Key features and capabilities
- Calculates profit after marketplace fees (Amazon, Etsy, Shopify)
- Accounts for advertising costs, shipping, and return rates
- Includes payment processor fees like Stripe and PayPal
- Provides platform-specific cost calculations
- Free-to-use calculator hub for sellers
Use cases
- An Amazon FBA seller determining the minimum sale price to maintain profitability after referral and fulfillment fees.
- An Etsy shop owner forecasting net income for a new product line including transaction and listing fees.
- A Shopify merchant evaluating the impact of running a paid ad campaign on their final profit margin.