Free Tool for Founders

Calculate Your TAM / SAM / SOM

Stop guessing your market size. Get accurate, investor-ready numbers for your pitch deck — instantly and free.

Live calculations6 key metricsNo sign-up needed

TAM

$12.0M

SAM

$2.4M

SOM

$120.0K

TAM / SAM / SOM Calculator

Real-time market sizing for your pitch

people

Total universe of people who could use your product

$

Average $ earned per customer per year

%

% of TAM you can practically reach

%

% of SAM you can capture in years 1-3

$

Avg marketing & sales cost to win 1 customer

%

Revenue % remaining after direct costs

Go Beyond Calculations

Get the full validation report in 60 seconds

Validexio analyzes your idea, competitors, and unit economics — then delivers a complete GTM kit, fake-door code, and tech architecture.

Validate My Idea Now

Startup Metrics Glossary

Every key metric explained in plain English

What is TAM?
Total Addressable Market is the total global demand for your product or service. If 100% of the people who could potentially buy your product did so, this is the revenue you would generate. VCs look for large TAMs (often $1B+).
What is SAM?
Serviceable Available Market is the segment of the TAM targeted by your products and services which is within your geographical or operational reach. It is the realistic portion of the market you can serve right now.
What is SOM?
Serviceable Obtainable Market is the portion of your SAM that you can realistically capture in the short term (years 1-3). This factors in your current resources, competition, and sales capabilities. It is your immediate revenue goal.
What is a good TAM for a startup?
Venture capitalists typically look for a TAM of at least $1 Billion for a startup to be considered fundable. However, for a bootstrapped Micro-SaaS, a TAM of $10M–$50M can be highly lucrative.
What is CAC?
Customer Acquisition Cost is the total cost of sales and marketing required to earn a new customer. A healthy SaaS business usually aims to keep this number as low as possible while scaling.
What is LTV?
Lifetime Value is the total amount of money a customer is expected to spend on your products during their lifetime as a customer. Higher retention heavily increases this metric.
LTV:CAC Ratio
The LTV to CAC Ratio measures the relationship between the lifetime value of a customer and the cost of acquiring that customer. An optimal ratio is generally considered to be 3:1 or higher.
What is MRR?
Monthly Recurring Revenue is the predictable total revenue generated by your business from all active subscriptions in a single month. It is the lifeblood of a SaaS startup.
Gross Margin
Gross Margin is the percentage of revenue you retain after accounting for the direct costs associated with running your service (e.g., server hosting, LLM API costs, database operations).
Payback Period
The Payback Period is the number of months it takes for a customer's gross profit to cover their initial Customer Acquisition Cost. Investors prefer a payback period of under 12 months.