Stop Guessing Your
Ad Scaling ROAS & Net Margins
Precision financial modeling & scaling calculators for media buyers, growth marketers, and direct-to-consumer founders.
15 Dedicated E-Commerce Calculators
Meta & TikTok ROAS Calculator
Calculate exact Break-Even ROAS, Target Scaling ROAS, Allowable CPA, and projected monthly net profit before launching ad campaigns.
Shopify & E-Com Net Margin Matrix
Uncover hidden platform fees, 3rd party payment gateway penalties, app subscriptions, FX markups, and refund losses.
Amazon FBA & PPC Margin Estimator
Simulate Amazon referral fees, FBA pick & pack size tiers, storage fees, returns, and PPC TACoS to find true net margins.
A/B Testing Statistical Significance
Determine if your landing page or ad creative variant has reached true statistical significance using two-tailed Z-score modeling.
LTV : CAC Payback Simulator
Model cohort retention decay, gross vs. net LTV, LTV:CAC health ratio, and exact months to recoup customer acquisition cost.
Google Ads Max CPC & tROAS Bid
Calculate your exact maximum allowable cost-per-click bid ceiling, target ROAS multiplier, and quality score bid discount factor.
Email & SMS Retention ROI Calculator
Simulate list monetization, open & click decay, campaign frequencies, Klaviyo/SMS tool costs, and Revenue Per Recipient (RPR).
Dropshipping Profit Margin Calculator
Calculate true dropshipping net profit after supplier COGS, ePacket/private line shipping, gateway fees, and paid ad CPA.
Customer Acquisition Cost (CAC) Calculator
Calculate fully-loaded Blended CAC vs Paid Media CAC by incorporating software, creative production, and agency retainers.
LTV : CAC Ratio Calculator
Evaluate unit economic health, sustainable payback runway, and scale readiness across DTC cohorts and recurring subscriptions.
Email Marketing ROI Calculator
Model subscriber list value, open and click conversion funnels, ESP software expense, and revenue per subscriber.
TikTok Ads Budget & CPM Calculator
Reverse-engineer required monthly and daily TikTok advertising budgets based on target CPM, CTR, CVR, and allowable CPA.
Amazon PPC ACOS Calculator
Calculate Amazon Advertising Cost of Sales (ACOS), Total ACOS (TACoS), and break-even thresholds after FBA and referral fees.
Subscription Churn Rate Calculator
Compute customer churn, retention percentages, customer lifetime in months, and annualized recurring revenue lost to churn.
Snapchat & Pinterest Ads Calculator
Forecast swipe-up clicks, pin engagement, CPA ceilings, and projected ROAS for visual discovery advertising campaigns.
Built for High-Velocity Media Buying
100% Client-Side
Zero backend round-trips. Calculations re-compute at 60 FPS instantly as you adjust sliders.
Total Margin Privacy
Your proprietary COGS, ad spend, and revenue figures never leave your local browser memory.
No Login Walls
Never be forced to create an account or provide an email to run simple financial models.
Client PDF Reports
Export clean, branded PDF summary reports in 1-click for brand audits and agency pitch decks.
In-Depth Tactical E-Commerce Guides
The Complete Guide to Break-Even ROAS & Target Margin Calculations
A tactical blueprint for media buyers and DTC brands to calculate exact break-even thresholds, account for merchant gateway fees, and scale ad spend profitably.
Shopify Net Margin Mastery: Accounting for COGS, Payment Fees & App Stacks
A comprehensive financial breakdown detailing the exact waterfall from Gross Merchandise Value (GMV) to true bankable bottom-line net profit on Shopify.
LTV to CAC Ratio & Payback Period: The Ultimate Unit Economics Playbook
Deconstruct customer lifetime value using gross margin contribution and cohort retention modeling to determine safe CAC payback windows for rapid scaling.
Amazon FBA vs FBM Profit Margins: Demystifying Storage, Referral & Fulfillment Fees
Navigate the complex matrix of Amazon seller fees, size tiers, aged inventory surcharges, and PPC advertising costs to protect unit economics.
Google Ads Target ROAS & Max Allowable CPC: Bidding Formula Mechanics
A tactical mathematical blueprint for paid search media buyers to calculate maximum allowable click costs, protect profit margins, and structure automated Smart Bidding.
Statistical Significance in E-Commerce CRO: Sample Size, P-Value & Z-Score Playbook
The definitive statistical guide for conversion rate optimization. Learn how to calculate required sample size, avoid stopping rule fallacies, and ensure test repeatability.
Retention Marketing ROI: Calculating True Attributed Revenue from Klaviyo & SMS
A rigorous framework for calculating the true incremental ROI of retention channels, auditing attribution windows, and modeling SMS carrier costs against customer LTV.
Dropshipping Profit Margin Masterclass: Supplier COGS, Shipping & CPA Waterfall
Deconstruct the true dropshipping unit economic waterfall. Learn how to account for fluctuating supplier costs, private line shipping, merchant gateway drag, and allowable ad CPA.
Fully-Loaded CAC vs Paid Media CPA: Auditing Agency, Creative & Software Overhead
Why ad-channel CPA lies to founders. Discover how to incorporate agency retainers, video creative shoots, martech subscriptions, and payroll into true Blended CAC.
LTV : CAC Ratio Benchmarks: Unit Economic Health, Payback Runway & Scale Readiness
The venture and private equity standard for DTC sustainability. Assess your brand health, calculate exact payback velocity, and identify whether your ad budget is under- or over-funded.
Email Marketing ROI & List Monetization: RPR, Send Frequency & Flow Attribution
Turn subscriber lists into predictable enterprise profit centers. Benchmark campaign conversion funnels, calculate exact ESP payback thresholds, and model list decay.
TikTok Ads Budget Planning: Reverse-Engineering Daily Spend from Target CPM & CPA
Stop running out of ad budget before the algorithm learns. Calculate minimum impression volume required for 50 conversions/week and reverse-engineer daily spend limits.
Amazon PPC ACOS vs TACoS Mastery: Break-Even Thresholds & Organic Halo Modeling
Master the economics of Amazon Sponsored Products. Learn how to calculate break-even ACOS after referral fees and pick-and-pack, and leverage TACoS for organic keyword ranking.
Subscription Churn & MRR Decay: Customer Lifetime Modeling & ARR Protection
Subscription businesses die when churn outpaces acquisition. Learn the mathematics of monthly vs annual churn, cohort decay, and how a 2% churn reduction doubles customer LTV.
Snapchat & Pinterest Ads Economics: Visual Discovery Funnels, Swipe-Up CPAs & High-Intent ROAS
Diversify away from Meta auction volatility. Unpack the lower-CPM mechanics of Snapchat Story ads and high-intent Pinterest Shopping pins to maximize net ad profit.
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Store Infrastructure
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Analytics & Attribution
Multi-touch attribution and real-time pixel tracking for Meta, TikTok, and Google Ads media buyers.
Foreplay.co
Creative Research
Save, organize, and build high-converting ad swipe files from TikTok and Facebook Ad Library.