E-Commerce Profitability Calculator

Net profit is calculated as the product selling price minus all costs: COGS, shipping cost, platform commission (a percentage of the selling price), payment processing fee (a percentage of the selling price plus shipping), marketing cost per acquisition (CPA), and any other costs you enter. Our ecommerce profitability calculator shows each cost component separately so you can see exactly what is eating into your margins and identify the biggest cost drivers.

Our ecommerce profitability calculator supports Shopify, WooCommerce, Amazon, Etsy, eBay, and BigCommerce - each with pre-configured commission and processing fee rates. For Shopify, it uses the 2.9% + $0 processing commission (typical for Shopify Payments). For Amazon, the 15% referral fee. For Etsy, 6.5% commission plus 3% processing. For eBay, 13.25% final value fee. For WooCommerce and BigCommerce, no platform commission but 2.9% payment processing. You can also select Custom to enter your own rates for any other platform.

The break-even price is the minimum price you need to charge to cover all costs without making a profit or loss. It is calculated by dividing your fixed costs (COGS, shipping, marketing, other) by (1 - variable cost percentage), where variable costs include platform commission and payment processing rates. Knowing your break-even price is crucial because any price below this means you lose money on every sale. Our ecommerce profitability calculator computes this automatically and shows how close your current price is to break-even.

The minimum viable price is the price needed to achieve a 5% net profit margin - a common minimum target for sustainable ecommerce businesses. It is calculated similarly to break-even but with an additional 5% profit margin built in. This gives you a pricing floor that ensures each sale contributes at least 5% to your bottom line. Our ecommerce profitability calculator displays this alongside your break-even price so you can set pricing strategies with appropriate buffers.

Absolutely. This ecommerce profitability calculator runs 100% locally in your browser. Your product costs, pricing data, and financial information are never sent to any server, stored in a database, or tracked in any way. Everything stays completely private on your device. No signup or account needed.

The profit waterfall chart is a visual bar chart that shows how your product revenue flows through each cost category and what remains as profit. Starting from your selling price (green bar), it subtracts COGS, shipping, platform fees, payment processing, marketing, and other costs (red bars), ending with your net profit (indigo bar). This visualization makes it immediately clear which costs have the biggest impact on your profitability and where you have the most opportunity to improve margins.

Yes, absolutely. You can run the same product data through the calculator with different platform selections to compare how fee structures affect your profitability. Simply change the platform dropdown and recalculate to see the net profit difference. For example, a $50 product with $20 COGS might yield $14.76 net on Shopify but only $9.26 on Amazon - the ecommerce profitability calculator makes these comparisons instant and visual.

Markdown room is the percentage you can discount your product before you start losing money on the sale. It is calculated as (current price - break-even price) / current price × 100. A high markdown room (20%+) means you have plenty of flexibility for sales, promotions, clearance events, and coupon codes. A low markdown room (under 5%) means your pricing is too tight - a small discount could make the sale unprofitable. Our ecommerce profitability calculator shows your markdown room and color-codes it for easy interpretation: green (healthy), yellow (tight), red (risky).