Invisible profit leaks
COGS, payment fees, shipping, returns and ad spend quietly change what an order is worth.
DFREE BROWSER-BASED TOOLS FOR DTC OPERATORS
Ecommerce profit
calculators for Shopify & DTC.
Free, browser-based tools for Shopify, Amazon, and DTC sellers. Calculate order profit, payment fees, break-even ROAS, inventory needs, and product data issues without connecting your store.
Calculations run in your browserNo store connection or accountClear assumptions and limits
THE PROBLEM
Running an ecommerce brand shouldn't feel like guesswork
Store economics are connected, but the tools founders use are scattered. DTCStack brings the key calculations into one practical library.
Promotion math gets fuzzy
A discount can lift conversion and still lower the contribution you keep from every sale.
More dashboards, less clarity
You do not need another noisy dashboard. You need a clear answer before the next move.
Your Store
Margin
Fees
Returns
SEO
Promos
Growth
THE TOOL SUITE
Choose a starting point.
One clear decision at a time.
Start with order profit, then choose a group for ad decisions, operations, or product data. Each tool explains its inputs and currency limits.
Preview the workflowOrder profit & growth
Model profit per order or SKU, set an ad-spend ceiling, and see how payment fees and promotions change your margin.
Operations & fulfillment
Estimate landed cost, compare Amazon fulfillment, or plan inventory replenishment using your own assumptions.
Product SEO & data quality
Prepare structured data and search copy, then check or clean product data before publishing or import.
A growing library of practical toolsExplore all tools
THE ECOMMERCE TOOLKIT
Free tools for store economics and product SEO
DTCStack helps ecommerce founders answer a practical question before they spend more on ads: what does one Shopify order actually keep after product, fulfillment and payment fees?
Estimate landed cost, payment and Amazon fulfillment fees; model profit, ad limits, free shipping thresholds and discount volume; then review Product JSON-LD and search-result copy. Explore the full tool library in your browser. The inventory reorder planner adds location-specific stock coverage, lead-time, MOQ, pack-size and purchasing-fund planning.
OUR PHILOSOPHY
Built for the people behind the store.
“
The best tool is the one that makes the next decision easier to explain.
Every calculator starts with a practical question: what would have saved time, money or a bad decision this week? The answer should be quick to use, easy to explain and honest about its limits.
— DTCStackWHY DTCSTACK
A practical stack for everyday decisions.
DTCStack is a growing library of standalone tools. Open one, enter your assumptions, and get a useful answer without setting up a new system.
Transparent formulas
See the model, assumptions and trade-off behind every result.
Private by default
Core calculations stay in your browser. No account is needed to start.
Clear currency scope
Each calculator states which currency it accepts. Check the displayed unit and use matching inputs; no tool converts exchange rates.
One question at a time
Focused tools help you make the next decision without a bloated dashboard.
The field notes
Practical guides for the moments behind the calculation.
COMMON QUESTIONS
Questions before you start?
Are the tools free?+
Yes. The core calculators are designed to be free to use without an account.
Do I need to connect my Shopify store?+
No. You enter the assumptions you want to test, so you can model a product before connecting store data.
Can I use the tools outside the US?+
Yes. Check each tool’s currency note: most amount calculators use USD; the payment fee calculator supports USD and EUR; Product Schema supports USD, EUR and GBP; the inventory planner uses your selected currency code; and the SKU auditor uses one currency for the file. No tool converts exchange rates, so use consistent values in the stated unit.
Are these accounting forecasts?+
No. They are planning scenarios. Actual results can vary with tax, refunds, attribution, payment and fulfillment rules.
READY WHEN YOU ARE
Start with the question in front of you.
Browse the library and choose the tool that fits your next ecommerce decision.
Explore all toolsBookmark DTCStack for your next product or ad review: press Cmd + D on Mac or Ctrl + D on Windows.