Free Ecommerce Calculators for Online Sellers
Running an online store means constantly tracking numbers — profit margins, fees, break-even points, taxes. Our suite of 8 free ecommerce calculators helps Shopify sellers, Amazon FBA sellers, and independent online retailers make smarter financial decisions without needing expensive software.
Every tool runs entirely in your browser. There is no account required, no data sent to servers, and no usage limits. You can use all tools as many times as needed, completely free.
Shopify Profit Calculator
The Shopify Profit Calculator helps you understand your true net profit after accounting for every cost: product cost (COGS), outbound shipping, Shopify payment processing fees, transaction fees (if using third-party gateways), marketing spend, packaging, refund rates, monthly app costs, and income taxes.
Many Shopify sellers focus on revenue but are surprised when margins are thin. A $50 product with a 2.9% Shopify fee, $5 shipping, and 3% refund rate could have a net margin below 15%. This calculator reveals the complete picture instantly.
Amazon FBA Calculator
Amazon FBA sellers face a complex fee structure. The Amazon FBA Calculator combines referral fees (8–15% by category), FBA fulfillment fees, monthly storage fees, shipping to Amazon costs, advertising spend, and return costs into a single net profit calculation.
GST Calculator India
Indian ecommerce businesses deal with four GST slabs (5%, 12%, 18%, 28%) plus the CGST/SGST/IGST split for intra-state vs inter-state transactions. The GST Calculator handles all slabs in both inclusive and exclusive modes.
Profit Margin & Break-Even Analysis
The Profit Margin Calculator shows a complete cascade from revenue through gross, operating, and net profit. The Break-Even Calculator tells you exactly how many units you need to sell to cover all fixed and variable costs.