Ecommerce Profit Calculator for Gross Margin, Net Profit, ROI and ROAS

Enter online store revenue, COGS, ad spend, platform and payment fees, shipping, returns and fulfillment. The calculator shows gross profit, gross margin, net profit, net margin, ecommerce ROI and revenue ROAS for one consistent reporting period.

Ecommerce Profit Calculator Inputs

Use one consistent currency for every monetary input. Dollar symbols are display labels and do not convert exchange rates.

Worked Example: Online Skincare Store

Net sales revenue: $45,000

COGS: $13,500

Gross profit: $31,500

Gross margin: 70%

Ad spend: $9,000

Platform and payment fees: $1,800

Shipping, returns and fulfillment: $2,500

Total entered costs: $26,800

Net profit: $18,200

Net profit margin: 40.4%

ROI: 67.9% | ROAS: 5.0x

The simplified product-level break-even ROAS is 1.43x at a 70% gross margin. A contribution-margin target would be higher after variable payment, shipping, fulfillment and return costs.

Ecommerce Profitability Formulas

Use net sales revenue and costs from the same period. Gross margin measures product economics, net margin measures final store profitability, ROI compares profit with total entered costs, and ROAS isolates advertising revenue efficiency.

Gross Profit = Net Sales Revenue - COGS Gross Margin = (Gross Profit / Net Sales Revenue) x 100 Total Costs = COGS + Ad Spend + Platform/Payment Fees + Other Costs Net Profit = Net Sales Revenue - Total Costs Net Profit Margin = (Net Profit / Net Sales Revenue) x 100 Ecommerce ROI = (Net Profit / Total Costs) x 100 ROAS = Attributed Revenue / Ad Spend Simplified Break-even ROAS = 1 / Gross Margin Decimal

Ways to Improve Online Store Profitability

📦 Increase Average Order Value

Use product bundles, quantity discounts, and relevant upsells to earn more revenue from each order without increasing customer acquisition cost.

📸 Improve Store Conversion Rate

Clear product images, useful descriptions, transparent pricing, and a simple checkout can generate more sales from existing traffic and ad spend.

⭐ Strengthen Customer Trust

Authentic reviews, customer photos, clear return policies, and secure checkout signals can reduce hesitation and improve purchase completion.

📧 Recover Abandoned Carts

Use timely email or SMS reminders to recover incomplete purchases and increase revenue without paying for additional website traffic.

🔁 Increase Repeat Purchases

Subscriptions, replenishment reminders, loyalty programs, and post-purchase campaigns can improve customer lifetime value and make acquisition costs more sustainable.

Add This Ecommerce ROI Calculator to Your Website

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Embedding requirement: Keep the SolveIndex attribution and source link visible and unchanged.

Ecommerce

Ecommerce profitability, margin, ROI and break-even ROAS guide

Learn how to calculate ecommerce gross profit, contribution margin, net profit, ROI and ROAS, classify COGS and operating costs, and identify the products and channels that actually create profit.

Read the complete guide Browse all guides

Frequently Asked Questions

Gross profit equals net sales revenue minus cost of goods sold. Gross margin equals gross profit divided by net sales revenue, multiplied by 100.

Subtract COGS, advertising, platform and payment fees, shipping, returns, fulfillment and other included operating costs from revenue for the same period.

Use the direct inventory or production costs recognized under your accounting method, such as product purchase or manufacturing cost and directly attributable materials. Keep packaging, inbound freight and direct labor treatment consistent and avoid counting the same cost twice.

Ecommerce ROI divides net profit by total entered costs. Net profit margin divides net profit by revenue. ROI measures cost efficiency, while margin shows how much of each sales dollar remains as profit.

ROAS equals revenue attributed to advertising divided by ad spend. The calculator uses total entered revenue, so use it only when that revenue belongs to the same advertising scope.

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Disclaimer: This ecommerce profit and ROI calculator provides planning estimates from the values entered. Results can differ from accounting or tax profit because of sales tax treatment, discounts, refunds, inventory adjustments, payroll, rent, software, financing, taxes, currency effects and other omitted costs. Use consistent periods and consult qualified accounting, tax, legal or financial professionals for material decisions.