Total Addressable Market (TAM) Estimator

Build a bottom-up TAM, SAM and SOM from company counts and ACV.

Currency

Target companies (total)

All companies that fit your category.

Realistically reachable

Right size, geo, segment you can serve.

Average contract value

Obtainable market share

Share of SAM you can win near-term.

TAM

$1,440,000,000

All companies × ACV

SAM

$504,000,000

35% you can serve

SOM

$20,160,000

4% of SAM

Bottom-up, your near-term obtainable market (SOM) is about $20,160,000 — that's the number to plan and pitch against. TAM ($1,440,000,000) is the ceiling story; SOM is what your GTM can actually credibly capture.

Bottom-up TAM (company count × ACV) survives investor scrutiny far better than top-down "1% of a $50B market" hand-waving.

About this calculator

Estimate total, serviceable and obtainable market size the credible way — bottom-up from target company counts, reachable share and average contract value.

Everything runs in your browser — nothing you type is sent anywhere or stored. Use it to sanity-check a plan, pressure-test a channel, or brief a team before you commit budget.