121 free tools & guides, no signup
Run the numbers before you make the call.
VentriTools is a library of focused calculators for people who run businesses — online and off. Pick a tool, enter your own figures, get a straight answer. No account, no email gate, no spreadsheet required.
Browse by category
View all tools →Acquisitions
SDE valuation, deal analysis, and due diligence tools for buying and selling online businesses.
Content
RPM, sponsorship pricing, and traffic value tools for content site owners.
Creators
Revenue calculators for YouTube, podcasts, courses, and paid newsletters.
Dev Tools
Encoding, hashing, and token utilities for developers.
Ecommerce
Margins, shipping, ad spend, and inventory calculators.
Finance
Break-even, payroll, margin, and financing calculators for any business.
Freelance
Rates, retainers, and project pricing for freelancers and agencies.
Marketing
A/B testing, ad spend runway, UTM builder, and campaign ROI tools.
Marketplaces
Fee and margin calculators for Amazon, Etsy, print-on-demand, and dropshipping.
Mobile
App store economics, subscription LTV, retention, and UA tools for iOS and Android businesses.
Privacy
PII scrubbing, metadata stripping, and data redaction tools — all client-side.
SaaS
Churn, LTV, CAC, and MRR tools for subscription businesses.
Security
Password strength, breach checking, and infrastructure risk tools.
Not sure which way to go?
Browse all guides →Answer a few questions and get a plain-English recommendation — no numbers required.
Checklists by category
View all checklists →Check items off in the browser, then export your progress to PDF or CSV.
Acquisitions
Due diligence and post-acquisition handover checklists for buying online businesses.
Dev tools
Deployment and migration checklists for shipping and moving production systems safely.
Ecommerce
Product launch and seasonal sale checklists for online stores.
Finance
Bookkeeping and fundraising readiness checklists for online business owners.
Freelance & agency
Client onboarding and offboarding checklists for freelancers and agencies.
SaaS
Launch, billing, and compliance checklists for subscription businesses.
Security
Breach response, audit, and compliance checklists for online businesses.
Popular tools
Ecommerce
Customer acquisition cost calculator
Free ecommerce CAC calculator. Enter your ad spend, other marketing costs, and new customers acquired to see your cost per acquisition, first-order economics, and how many repeat purchases it takes to recover your acquisition spend.
Ecommerce
Product margin calculator
Free product margin calculator for ecommerce sellers. Enter your selling price, cost of goods, shipping, and platform fees to see your gross profit, margin %, and markup % per unit sold.
Finance
Break-even point calculator
Free break-even point calculator. Enter fixed costs, variable cost per unit, and selling price to find the minimum units and revenue needed to break even — with a profit table at different sales volumes.
Finance
Profit margin calculator
Free profit margin calculator for any business. Enter your revenue, cost of goods, and operating expenses to see gross profit, gross margin %, net profit, and net margin %.
Finance
Business runway calculator
Free business runway calculator. Enter cash on hand, monthly expenses, and current revenue to see how many months until you run out of money — plus scenario modelling for expense cuts.
Saas
Churn impact calculator
Free churn impact calculator. Enter your MRR, customer LTV, and churn rate to see exactly how a 1–2% change in monthly churn compounds over 12–24 months.
Saas
Customer LTV calculator
Free customer lifetime value calculator. Enter your average revenue per customer, gross margin, and churn rate to see what a single customer is worth over their lifetime.
Saas
MRR growth projector
Free MRR growth projector. Enter your starting MRR, new business added per month, expansion revenue, and churn rate to see where your MRR lands at the end of a chosen time horizon.
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No paywall, no trial period, no "create an account to see your result."
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Every calculator explains its formula, so you can check it or rebuild it yourself.
