Built for media buyers, DTC founders, and growth teams. No signup. No paywall. Just math that matters.
eComCalculators.com is a free collection of 50 calculators purpose-built for ecommerce marketers, DTC founders, and media buyers. Every tool solves a real problem that performance marketers face daily — from calculating true ROAS and breakeven points to modeling discount economics, diagnosing creative fatigue, auditing tech stack costs, and comparing margins across Amazon, TikTok Shop, Etsy, and your own DTC site.
Unlike generic online calculators, these tools account for the unique cost structures of ecommerce businesses including COGS, fulfillment, payment processing fees, returns, platform commissions, and multi-channel advertising spend. The calculators span ten categories: paid media performance, unit economics and profitability, creative optimization, conversion rate optimization, email and SMS marketing, attribution and measurement, financial planning, influencer and partnership economics, platform-specific tools for Meta, Google, Amazon, TikTok Shop, Etsy, and Shopify, and inventory and supply chain planning.
Each calculator includes scenario modeling, industry benchmarks where relevant, and detailed explanations of the underlying formulas so you understand not just the output but the thinking behind it. Related tools are linked from every page to help you explore connected metrics — your ROAS is only meaningful in the context of your contribution margin, which depends on your COGS, shipping costs, and processing fees. These tools are designed to work together as a complete analytical toolkit for ecommerce decision-making.
No signup is required. No data is stored. No email gates. No paywall. Just fast, accurate math for the metrics that drive ecommerce profitability. Built by marketers who got tired of doing this math in spreadsheets every week. Bookmark the tools you use most and come back whenever you need to run the numbers before making a decision.