Enter your three core inputs
Total target accounts in your addressable market, a realistic adoption rate, and price per account.
MARKET SIZING
Bottom-Up Market Sizer
Enter your target account count, adoption assumption, and price to get a calculated bottom-up market size.
- Uses your inputs in a transparent calculation
- Instant result with practical next steps
- No signup required
Planning guidance only. Validate important decisions with customer evidence and your delivery team.
YOUR INPUTS
Build your result
Complete every field. The result updates only when you choose Calculate.
How it works
We calculate your market size
Target accounts × adoption rate × price per account gives your bottom-up market size — the direct, defensible sizing method.
Get a plausibility check
Your adoption rate assumption is checked against typical ranges, since this is usually the most optimistic number in a market sizing exercise.
Continue learning: Validating SaaS pricing before building your MVP · Validating problem, workflow, or pricing first
Frequently asked questions
Why bottom-up instead of top-down market sizing?
Top-down (starting from a big industry number and taking a percentage) is easy to inflate. Bottom-up — counting actual reachable accounts and multiplying by realistic adoption and price — is more defensible and grounded in your specific go-to-market.
What's a realistic adoption rate?
For an early-stage or unproven product, single digits to around 15-20% is typical for a focused market over a few years. Above 50% usually requires a dominant, near-monopoly position.
Should price per account be monthly or annual?
Use whatever consistent time period you want your market size expressed in — annual is most common for market sizing since it aligns with typical ARR-style reporting.
Does this account for market growth over time?
No — this gives a snapshot bottom-up size at your stated adoption rate and price. Model growth separately by re-running with updated assumptions at different time horizons.
How We Compare
| Feature | MVPHub | Google Forms | Airtable |
|---|---|---|---|
| Instant bottom-up calculation | Included | Not included | Not included |
| Adoption-rate plausibility check | Included | Not included | Not included |
| Full market research data collection | Not included | Included | Limited |
| Financial modeling / scenario planning | Not included | Not included | Limited |
Google Forms and Airtable can help you gather and organize the raw account and pricing data. MVPHub runs the bottom-up multiplication and sanity-checks your adoption assumption instantly.
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