Paste your product URL. We'll estimate your Total Addressable Market, Serviceable Market, and realistic target — backed by competitor data and industry benchmarks.
TAM (Total Addressable Market) is the total revenue opportunity if you captured 100% of your market. SAM (Serviceable Addressable Market) is the segment you can realistically reach with your product and distribution. SOM (Serviceable Obtainable Market) is the portion you can capture in the near term — typically 1-5% of SAM for an early-stage startup.
Investors ask for these numbers. More importantly, they tell you whether your market is big enough to build a venture-scale business or whether you're better off bootstrapping. A $50M TAM is fine for a bootstrapped SaaS. A $500M TAM starts to make sense for VC funding.
PostBuild's Market Sizing tool calculates your TAM/SAM/SOM using real competitor revenue data, industry benchmarks, and funding patterns — not generic market reports that cost $5,000.
Our estimates are based on real competitor data — funding rounds, employee counts, and pricing tiers from Crunchbase, G2, and public filings. Each data point is labeled as "verified" or "estimated" so you know the confidence level. These are directional estimates useful for strategy, not audit-grade financials.
Investors care about your reasoning, not your data source. A bottoms-up market sizing backed by real competitor data is more credible than a top-down Gartner number. PostBuild's report gives you both approaches so you can present the strongest case.
Free market sizing. No login. Results in your inbox.