35 free tools · No signup
E-commerce calculators that protect your margins
Check profit, ad break-even, fees, pricing, shipping, inventory, cash flow, and customer value, then audit your product page for conversion problems.
Free calculators and tools
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Showing 35 of 35 tools
- Conversion
Product Sales Health Analyzer
Paste a product page URL and get a health score, a list of conversion problems, and an AI fix plan.
Open tool - Advertising
Break-Even ROAS Calculator
Find the minimum return on ad spend you need to cover product cost, shipping, and fees before you launch a campaign.
Open tool - Advertising
PPC Max CPC & Bid Calculator
Work out the highest cost per click you can pay on Google or Meta and still hit your target net margin.
Open tool - Profitability
True Profit Calculator
Deduct product cost, ad spend, and fulfillment to see your real net profit and net margin on every order.
Open tool - Product mix
SKU Profitability Matrix Calculator
Rank up to 10 products by gross profit and sort them into A, B, and C tiers to see which SKUs carry your store.
Open tool - Profitability
Business Break-Even Calculator
Turn your monthly fixed overhead into the number of orders and revenue you need each month to break even.
Open tool - Sourcing
Landed Cost Calculator
Add freight, duties, import taxes, and handling to see the true cost of every unit that reaches your warehouse.
Open tool - International
Cross-Border Pricing Calculator
Add FX fees, import duty, and VAT or GST to see the landed customer price and your net payout abroad.
Open tool - Wholesale
Wholesale & B2B Margin Calculator
Check your wholesale profit, your retailer's margin at MSRP, and the profit on a minimum order quantity.
Open tool - Pricing
Target Profit Pricing Calculator
Work out the selling price that hits your target margin, then test how far you can discount before you lose money.
Open tool - Pricing
Flash Sale Profit Simulator
Test a BFCM or flash sale discount to see whether the extra volume beats your normal daily profit.
Open tool - Fees
Shopify & Gateway Fee Calculator
Estimate Shopify Payments, Stripe, and PayPal processing fees and see your exact payout per order.
Open tool - Marketplaces
Amazon FBA Profit Calculator
Subtract referral fees, FBA fulfillment, storage, and ad cost to see net profit, margin, and ROI per unit.
Open tool - Marketplaces
Etsy Fee & Profit Calculator
Add listing, transaction, payment processing, and offsite ads fees to find your real Etsy profit per sale.
Open tool - Marketplaces
TikTok Shop Fee & Profit Calculator
Subtract TikTok referral fees, creator affiliate commission, shipping, and ad cost to see profit per order.
Open tool - Unit economics
CAC & LTV Ratio Calculator
Compare customer acquisition cost with lifetime value to check whether your unit economics can support scaling.
Open tool - Subscriptions
Subscription MRR & Churn Calculator
Model subscriber growth, churn, lifetime value, and monthly profit for a subscription box or recurring product.
Open tool - Subscriptions
Net Revenue Retention Calculator
Measure NRR, gross revenue retention, and net growth from your existing customers using expansion, churn, and downgrades.
Open tool - Advertising
Ad Spend & ROAS Simulator
Turn an ad budget, CPC, and conversion rate into projected clicks, orders, revenue, ROAS, and profit.
Open tool - Advertising
Influencer & Creator ROI Calculator
Estimate orders, revenue, profit, ROAS, CPA, and CPM for a creator campaign before you pay the fee.
Open tool - Advertising
Affiliate Commission Payout Calculator
See your profit per affiliate sale, total monthly payout, and the highest commission you can afford to offer.
Open tool - Retention
Email & SMS Marketing ROI Calculator
Turn list size, send volume, and click and conversion rates into attributed revenue, profit, and ROI.
Open tool - Organic
SEO Traffic Value Calculator
Value your organic traffic by the paid ad spend it replaces, plus the revenue and profit it generates.
Open tool - Growth
Conversion Rate Revenue Calculator
See how much extra revenue and profit a higher conversion rate adds from the traffic you already have.
Open tool - Growth
Landing Page Payback Calculator
Find how many extra orders a landing page tool or agency needs to win before it pays for itself.
Open tool - Growth
Cart Abandonment Recovery Calculator
Size your abandoned-cart revenue pool and see the orders and profit a recovery email or SMS flow can win back.
Open tool - Revenue
Bundle & Upsell Profit Calculator
Compare single-item and bundle orders to see the AOV lift, profit change, and the biggest discount you can afford.
Open tool - Shipping
Free Shipping Threshold Calculator
Test a free-shipping threshold to see whether the larger baskets pay for the shipping you give away.
Open tool - Returns
Return & Refund Cost Calculator
Measure the monthly profit your returns cost you, your margin after returns, and the orders needed to recover.
Open tool - Risk
Chargeback & Fraud Cost Calculator
Calculate monthly chargeback losses, the orders needed to recover them, and your card-network risk level.
Open tool - Cash flow
Cash Flow & Runway Calculator
See your monthly burn or surplus, cash runway, cash conversion cycle, and the working capital tied up in stock.
Open tool - Inventory
Inventory Reorder Calculator
Calculate your reorder point and safety stock so you never run out of bestsellers or overstock slow movers.
Open tool - Inventory
Inventory Carrying Cost Calculator
Add storage, insurance, shrinkage, and cost of capital to see what holding your inventory costs each year.
Open tool - Shipping
Dimensional Weight Calculator
Compare dimensional weight with actual weight to find the billable weight carriers will charge you for.
Open tool - Shipping
Packaging & Box Optimization Calculator
Compare your current box with a smaller one to see the billable weight, shipping, and material you would save.
Open tool
Built for online sellers
Whether you sell on Amazon, Shopify, Etsy, TikTok Shop, or your own store, EcomMath helps you check the numbers before you spend. Every calculator is free and runs in your browser. Learn more about EcomMath or read our step-by-step guides.