Free Tools

Ecommerce Profit Calculators

A suite of free calculators for Shopify Plus and DTC operators who need to understand their true margin, not the blended number from a month-end P&L. Each calculator is built from mid-market merchant data and reflects the profit-floor perspective Agentis enforces at checkout.

Margin

7 tools

Profit Margin Calculator

Free profit margin calculator for ecommerce. Calculate gross margin, net margin, and total profit from revenue, COGS, and operating expenses, with benchmark context.

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Break-Even Calculator

Free break-even calculator. Calculate break-even units and break-even revenue from fixed costs, unit price, and variable cost, with contribution margin analysis.

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Contribution Margin Calculator

Calculate contribution margin per unit, CM %, and break-even units instantly. Free tool built for Shopify Plus and mid-market DTC brands. Updated 2026.

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True Product Cost Calculator

Calculate your all-in true product cost: landed cost, fulfillment, returns, and payment fees. See how much your naive COGS margin is overstating reality.

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Subscription Margin Calculator

Calculate subscription LTV, contribution per shipment, LTV/CAC ratio, and payback period. Built for Shopify Plus subscription brands modeling real unit economics.

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Gross Profit Per Order Calculator

Calculate true gross profit per ecommerce order including line items, COGS, fulfillment, payment fees, and discounts. Net margin per order, per-SKU breakdown.

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Multi-Currency Margin Calculator

Model FX risk on cross-border ecommerce margin. Calculate gross margin pre and post FX movement, with hedging cost scenarios and country-specific exposure.

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Scenario Modeling

6 tools

Discount Impact Calculator

See how 10%, 20%, 30% off destroys gross margin on Shopify orders. Free calculator factors COGS, shipping, returns. 2026 ecommerce profit tool.

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Freight Zone Impact Calculator

Model how shipping zone mix destroys margin. Calculate blended freight cost, margin impact, and loss per order above your free shipping threshold.

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Return Rate Impact Calculator

Calculate how return rate erodes effective margin. Model return processing costs, restocking recovery, and true margin after returns.

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Tariff Impact Calculator

Calculate the post-tariff landed cost on imported ecommerce SKUs. Models reciprocal tariffs, MFN rates, and Section 301 duties to project margin compression.

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De Minimis Savings Calculator

Quantify the cost impact of the U.S. de minimis repeal on your ecommerce shipments. Compare pre-repeal vs post-repeal landed cost across the $800 threshold.

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Subscription Decay Calculator

Model how subscription cohort retention curves and COGS drift compound into multi-quarter margin trajectories. Inputs: month-1 retention, decay slope, COGS movement.

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Fees & Costs

2 tools

Shopify Plus Fees Calculator

Calculate total Shopify Plus fees: platform fee, transaction fees, and payment processing. See your true effective fee rate as a percentage of revenue.

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Amazon FBA Fees Calculator

Calculate Amazon FBA fees including referral fees, fulfillment fees, and storage. See your true per-unit margin and monthly profit after all Amazon costs.

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Funnel Economics

2 tools

CAC Payback Period Calculator

Calculate how many months and orders it takes to pay back customer acquisition cost. Built for DTC brands measuring true marketing efficiency.

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ROAS to Profit Calculator

Convert ROAS into actual profit. Calculate profit after ads, marketing efficiency ratio, and break-even ROAS given your gross margin and fulfillment costs.

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From calculation to enforcement

Calculators measure margin. Agentis enforces it.

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