Free E-commerce Tools for Sellers – Calculators, Detectors & Generators
From generating business names to calculating profit and shipping - we've built essential ecommerce resources and tools that solve real problems for online sellers.
How to Use These Free E-commerce Tools to Grow Faster
Eocomo brings together 16+ free tools for Shopify and Amazon sellers. Start with the Amazon FBA calculator to estimate fees and profit, then use the profit calculator to factor in COGS, shipping, and ad spend. If you are building a brand, the business name generator helps you quickly brainstorm brandable store names.
For Shopify sellers, the Shopify theme detector reveals any store’s theme and core apps. Combine this with the SEO keyword tool to discover high-intent topics, and the AI product description generator to create conversion-focused copy.
To improve unit economics, use the shipping calculator for cost and delivery time planning, and the ad ROI calculator to model ROAS and CPA targets. Track competitors with the price monitor to protect margins.
Every tool is free and fast—no login required for most features. Explore the full collection on this page and bookmark it as your daily e-commerce toolkit.
Business Name Generator & Store Launch Tools
Our comprehensive suite of ecommerce resources and tools covers every aspect of running a successful online store
Business Name Generator & Store Launch Tools
Get your eCommerce business off the ground with essential startup tools
- • Business Name Generator
- • Online Store Launch Checklist
- • eCommerce Calendar
E-commerce Calculators – FBA, Profit, ROI & Shipping
Make data-driven decisions with powerful calculation and analysis tools
- • Ad ROI Calculator
- • Profit Calculator
- • Amazon FBA Calculator
- • Customer Lifetime Value Calculator
E-commerce Productivity & Automation Tools
Automate tasks and gain insights with intelligent productivity tools
- • Pay Stub Generator
- • Invoice Generator
- • Platform Detector
- • Shopify Theme Detector
- • Link Checker
- • SEO Keyword Tool
- • Price Monitor
- • Product Description Generator
- • Product Model Generator
E-commerce Calculators – FBA, Profit, ROI & Shipping
Start with these calculators and detectors to see immediate results for your business
E-commerce Platform Detector
Work smarterIdentify which eCommerce platform any website is using instantly (Shopify, WooCommerce, Magento, and more)
Shopify Theme Detector – Identify Any Store’s Theme
Work smarterFind the exact Shopify theme and key app technologies used by any store
Online Store Launch Checklist – Pre-launch Essentials
Start your brandA complete pre-launch checklist for Shopify and DTC brands to go live with confidence
Business Name Generator for E-commerce Stores
Start your brandGenerate brandable store names in seconds. Perfect for Shopify, Amazon and DTC brands
Profit Calculator for E-commerce Sellers
Understand your numbersCalculate margins with COGS, fees, and shipping to optimize pricing for e-commerce sellers
Pay Stub Generator (US)
Work smarterCreate professional pay stubs with automatic federal and state tax calculations
Invoice Generator for Online Stores
Work smarterCreate professional invoices with logo, taxes, and discounts. Download as PDF
Ad ROI Calculator – Meta & Google Ads
Understand your numbersCalculate ROAS, CPA and profit from ad spend. Ideal for Facebook, Instagram and Google Ads
Amazon FBA Calculator for Sellers
Understand your numbersEstimate Amazon FBA fees, storage costs and profit margins to optimize pricing
Link Checker – Broken Link Finder
Work smarterValidate website links, identify broken links, and analyze internal link structure
SEO Keyword Tool for E-commerce
Work smarterResearch ecommerce keywords using real Google Autocomplete data for high-intent terms
Shipping Calculator – Rates & Delivery Times
Understand your numbersCalculate shipping costs and delivery times for major carriers to set the right price
Price Monitor – Competitor Price Tracking
Work smarterTrack competitor prices and changes over time to protect margins and win the buy box
Product Description Generator (AI)
Work smarterGenerate compelling, SEO-optimized product descriptions for higher conversions
Customer Lifetime Value (CLV) Calculator
Understand your numbersCalculate CLV to measure customer profitability and optimize marketing and retention
AI Product Image Generator – Virtual Models
Work smarterGenerate AI product model images for ads and PDPs by combining products with virtual models
Ready to supercharge your online store?
Join thousands of successful store owners who use our tools daily. Get started today and see the difference free tools can make.
Frequently Asked Questions
Are these e-commerce tools really free?
Yes. All tools on this page are free to use. Some advanced features may be added in the future, but core functionality will remain free.
How do I use the Amazon FBA Calculator?
Open the Amazon FBA Calculator, enter product price, dimensions, and shipping details to estimate fees and profit. For full cost modeling, also check the Profit Calculator.
Can I detect the theme of any Shopify store?
Yes. Use the Shopify Theme Detector to identify the theme and key apps used by any public Shopify store.