Market Size Calculator

Size your market in minutes, not spreadsheets. Describe what you sell and AI drafts your first numbers, then edit anything to make them yours.

Total Addressable Market (TAM)
Market Penetration Rate
Market Size and Share
Market Growth Rate and Projections

Market Size Calculator - LP Image - HSFS (final)

Describe your product, get a starting point

We turn a plain description of what you sell into a first set of numbers. TAM, penetration, share, and growth, all filled in before you touch a field. Each one is marked as an estimate, with how confident it is and what it's based on. You start from a draft instead of a blank sheet.
Start with our estimates, end with yours

We show the inputs behind every result, not just the total. Change any figure and everything recalculates as you type. Each estimate is editable, so you swap in your own numbers the moment you have them. What you walk away with is your number, not ours.
Your work gets checked along the way

We check the numbers as you go. A market bigger than the population, penetration over 100 percent, a competitor larger than the market you just sized. The warning shows up for you first, so a stray zero never lands in the deck you present.

Step One

Describe your product

Tell it what you sell and who buys it, in one line. No spreadsheet, no setup.

Step Two

Get a first draft

The calculator fills in TAM, penetration rate, market size and share, and growth projections, each marked as an estimate with a confidence level.

Step Three

Swap in your real numbers

Change any figure and everything recalculates as you type. It flags anything that can't be true, like a market bigger than the population.

Step Four

Put the numbers to work

Walk away with a clear set of figures for your deck, board update, or next planning conversation.

Need to figure out the size of your market?

Start with a description, not a blank sheet. Tell the calculator what you sell and who buys it, and it drafts your TAM, penetration rate, market size and share, and growth projections in seconds.Every number is an editable estimate with the math shown, so you stay in control, and built-in checks flag figures that are too big to be true or that don't line up across tabs. Skip the blank-spreadsheet guesswork and walk away with a clear, structured starting point you can pressure-test and build on, free and right in your browser.

Frequently Asked Questions (FAQs)

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