Improve unit economics
Start with margin and profitability before changing price or ad budget.
Calculator Library
Free eCommerce calculators for profit, ads, and growth planning.
Find the exact calculator for your next pricing, media, margin, or lifecycle decision. Each page includes formulas, assumptions, and related tools for deeper scenario analysis.
Start by your business question
Set safer ad targets
Use break-even and ROAS math before scaling spend on Meta or Google.
Control discount and refund loss
Check promo and refund impact on contribution, not only top-line revenue.
Plan growth payback
Measure acquisition efficiency with CAC, LTV, and conversion metrics.
Profit & Margin
AliExpress Margin Calculator
Estimate profit and margin on AliExpress-style products with platform and payment fee assumptions.
Contribution Margin Calculator
Calculate contribution margin amount and percentage.
Discount Impact Calculator
Compare per-unit profit before and after discounts with optional payment fee impact.
Dropshipping Profit Calculator
Estimate unit-level dropshipping profit and margin after ads, shipping, and fees.
Gross Margin Calculator
Calculate gross profit and gross margin percentage.
Markup Calculator
Calculate markup percentage from cost and selling price.
Net Profit Calculator
Calculate net profit and net margin with operating expenses, taxes, and interest.
Refund Impact Calculator
Estimate net refund loss when payment fees may not be refunded and other sunk costs already happened.
Shopify Fee Calculator
Estimate total platform and payment processing fees with optional fixed fee per order.
Shopify Profit Calculator
Calculate net Shopify profit with revenue, product cost, ad spend, shipping, and payment fee inputs.
Ads & Profitability
Break-even ROAS Calculator
Estimate your break-even ROAS and maximum ad spend per order after product, shipping, and fee costs.
CPA Calculator
Calculate cost per acquisition from ad spend and conversions.
CPC Calculator
Calculate cost per click from ad spend and clicks.
Facebook Ads ROAS Calculator
Calculate ROAS from attributed revenue and ad spend.
Google Ads Break-even Calculator
Estimate break-even CPA and CPC from order economics and conversion rate.
TikTok Ads ROI Calculator
Calculate ROI and ROAS from revenue and ad spend.
TikTok Dropshipping ROI Calculator
Estimate profit, ROI, and ROAS for TikTok-driven dropshipping campaigns.
Amazon
Amazon FBA Fee Calculator
Estimate custom Amazon FBA total fees with referral fee %, fulfillment fee, and storage fee inputs.
Amazon PPC Profit Calculator
Calculate Amazon PPC campaign profit and ROAS.
Amazon ROI Calculator
Calculate Amazon ROI from profit and COGS.
Amazon Storage Fee Estimator
Estimate storage fee from volume, rate per cubic foot, and number of months.