Free tools for product managers who believe in data-driven decisions
Last updated: March 2026
Working through a product decision can mean moving between spreadsheets and tools. PM Toolkit brings related calculations together.
PM Toolkit is a suite of 24 interconnected calculators and frameworks for SaaS unit economics, prioritization, statistical testing, and market sizing. You can reuse results across related tools.
PM Toolkit connects related metrics. You can use LTV in CAC analysis, churn rates in retention projections, and market sizing in pricing decisions.
Hi, I'm Prateek, a product manager based in Singapore.
I've spent years working in product management, and I kept running into the same problem: the tools I needed were either expensive, overly complex, or simply didn't talk to each other. I'd calculate LTV in one spreadsheet, CAC in another, and then manually try to connect the dots.
I believe PMs at startups and larger companies should have access to useful quantitative tools without an expensive subscription.
PM Toolkit is my way of giving back to the PM community that taught me so much. Every calculator, article, and prompt template is free to use.
The calculators, articles, and prompt templates are free to use without an account.
Use the formulas, assumptions, and guidance to understand what a result can tell you. Compare benchmarks only when their definitions fit your data.
Each calculator includes guidance on interpreting results, common pitfalls, and how the metric informs product decisions.
PM Toolkit is a free resource for the PM community. Feedback helps identify problems and useful additions.
24 Interconnected Calculators
From LTV and CAC to RICE scoring and A/B testing
50 Learning Articles
In-depth guides on PM metrics, frameworks, and strategy
AI Prompt Library
Templates for ChatGPT and Claude
Unified Metrics Dashboard
See all your calculations in one connected view
Start using PM Toolkit today. No sign-up required, no credit card needed. Open a calculator to work through your numbers.
The fastest way to reach me with bug reports, feature requests, or general feedback is on LinkedIn. You can also use the in-app feedback button in the bottom-right of any page.