Decision Summary
Projected MRR at horizon
$311,753.36
Combines organic growth with conversion-weighted pipeline additions each month.
Startup Money Math
Sales Forecast Calculator
Forecast MRR and cumulative revenue using organic growth, pipeline conversion, opportunity volume, and average deal size assumptions.
MRR Forecast Curve
Starting MRR compounds with baseline growth and expected pipeline contribution.
StartM6M12
Projected MRR
$311,753.36
Key Metrics
Cumulative forecast revenue
$2,332,420.60
Monthly pipeline contribution
$10,560.00
Growth rate
5.00%
Forecast horizon
12 months
How to use it
- Enter starting MRR, monthly organic growth, pipeline conversion rate, average deal size, new opportunities per month, and forecast months. Use historical close rates and current pipeline generation, not sales targets, because small assumption errors compound every month.
- Read projected MRR at the horizon, cumulative forecast revenue, monthly pipeline contribution, growth rate, and forecast horizon. Pipeline conversion above 40% is flagged because it often produces a forecast that looks precise but is not grounded in real close performance.
- Separate growth driven by compounding from growth driven by pipeline volume. If most of the forecast lift comes from new opportunities times conversion times deal size, the forecast is mainly a sales-capacity bet rather than a durable momentum story.
- Build at least downside, base, and upside cases by moving conversion 5-10 points and opportunity volume 10-20%. Use the downside or base case for hiring and cash planning, and reserve the upside case for stretch goals or investor discussion.
- Re-run monthly as pipeline ages, close rates shift, or deal size changes. Compare forecasted MRR versus actual MRR each month so the model gets calibrated to your true win-rate behavior.
AI Integrations
Contract, discovery endpoints, and developer notes for agent use.
Always available for agents
AI Integrations
Contract, discovery endpoints, and developer notes for agent use.
Tool contract JSON
https://aibizhub.io/contracts/sales-forecast-calculator.jsonStable input and output contract for this exact tool.
Human review
People can use the browser page to sense-check outputs and charts, but agents should still execute against the contract and discovery endpoints.
- /agent-tools.json - machine-readable tool index.
- /llms.txt - human-readable model discovery guide.
- /.well-known/webmcp.json - WebMCP capabilities manifest.
- /.well-known/ai-plugin.json - plugin-style discovery manifest.
{
"tool": "sales_forecast",
"starting_mrr": 80000,
"monthly_growth_percent": 5,
"pipeline_conversion_percent": 22,
"avg_deal_size": 1200,
"new_opportunities_per_month": 40,
"months": 12
} Expand developer notes
Agent playbook
- Resolve Sales Forecast Calculator from /agent-tools.json and open its contract before execution.
- Validate inputs against the contract schema instead of scraping labels from the page UI.
- Open the browser page only when a person wants to review charts, assumptions, or related tools.
Agent FAQ
Should ChatGPT, Claude, or another agent click through the UI?
No. Start with /agent-tools.json, then follow the tool's contract URL. The page UI is for human review, not parameter discovery.
When do tools show Quick and Advanced?
Every tool opens in Quick Start first. Advanced Controls keeps the same scenario, reveals more assumptions or diagnostics, and every tool keeps AI integrations inline below the instructions.
When should an agent still open the browser page?
Open it when a human wants to sense-check the output, review the chart, or keep exploring related tools after the calculation finishes.
Questions people usually ask
What makes a forecast useful instead of fantasy?
Grounding it in real conversion, growth, or pipeline assumptions you can actually defend. A clean forecast is only as good as the drivers behind it.
Should I trust the total or the monthly path more?
Start with the monthly path. The timing of growth, slippage, and recovery often matters more than the final headline total.
Why should I run downside and upside cases?
Because one forecast number is not a plan. The range tells you how much risk you are really carrying.
Can this replace a full finance model?
No. It is best for fast planning, founder decisions, and scenario pressure-testing before you open a bigger model.
Is this tool free and private to use?
Yes. AI Biz Hub tools are free, no-signup browser tools. Inputs stay in your browser unless you choose to share a URL.
Is this professional advice?
No. Outputs are business planning estimates — not legal, tax, or accounting advice.
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Decision Workflows
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