Growth Rate Calculator, Free SaaS Metric Tool

How It Works

Enter two data points, the same metric at two points in time, and the calculator returns the growth rate over the period, the compound annual growth rate (CAGR), and the doubling time. You can apply it to any metric that matters: monthly recurring revenue, active users, pipeline, or headcount. The math is the same; the interpretation is what changes.

Growth rate is the first number an investor asks for, because valuation is largely a function of growth. A company growing 15% month over month doubles roughly every five months; at 5% MoM it takes over a year. That difference in compounding is why early-stage investors weight growth so heavily, and why a declining growth trend, even at a high absolute level, raises questions about the next round.

How to Interpret the Results

Context matters more than the raw number. Early-stage SaaS benchmarks cluster around 15-20% MoM for top-quartile companies, falling to 5-10% MoM at the growth stage, a startup that grows 10% MoM at $10M ARR is more impressive than one growing 20% MoM at $10K MRR. Compare like for like: same metric, same period length, same stage. And look at the trend, not the level: deceleration is the pattern that kills fundraises, while acceleration justifies a premium.

Use Cases

• Fundraising narrative: present MoM and YoY growth with doubling time to make your trajectory concrete.
• Investor screening: compute growth from public signals to shortlist startups before they raise.
• Target setting: back into the growth rate you need to hit a revenue milestone by a date.
• Diagnostics: if growth is flat while engineering velocity is rising, the bottleneck is go-to-market, not product.

Growth, Momentum, and Deal Timing

Growth is a lagging indicator, by the time it is visible in public metrics, the round is often underway. Engineering momentum is a leading indicator: commit velocity, contributor growth, and repository expansion typically accelerate before revenue growth does. GitDealFlow tracks these signals across 350+ startups and has documented a 21-47 day lead time between engineering acceleration and the public fundraise announcement, so investors can build a pipeline from teams whose growth story is still forming.

How to Use This Tool in a Deal Flow Workflow

This calculator exists to be embedded in a sourcing or diligence workflow, not used once and closed. The numbers it produces are the same primitives the GitDealFlow dataset is built on: 350+ startup GitHub organizations tracked across 15 sectors, refreshed weekly. When a target company is being evaluated, run its figures here, then compare against the sector baseline in the research dataset. The disciplined pattern is signal first (breakouts surface 21 to 47 days before the round), then arithmetic (does the unit economics justify a meeting), then process (memo, checklist, decision).

Related Tools

• GitHub momentum checker (any repo)
• All investor tools
• Due diligence checklists
• Research datasets (CC BY 4.0)