Free SaaS calculators for the metrics your board actually asks about

Why we built free tools for B2B SaaS teams

Most SaaS metrics calculators live behind an email gate or return a raw number with no context. We built these differently. Every calculator includes benchmark bands from real B2B SaaS companies between $2M and $50M ARR — so the output actually means something. You see where you land relative to peers, not just a number on a screen.

We use these same tools in our own client engagements. When a growth leader needs to calculate customer acquisition cost before a board meeting, or a VP Finance wants a quick LTV:CAC sanity check, these are the tools we reach for. Now they're free for anyone building in B2B SaaS.

Every input field includes contextual guidance — what counts as marketing spend, how to handle annual vs. monthly contracts, when to use blended vs. channel-specific numbers. The goal is a boardroom-ready metric in under 30 seconds, not a spreadsheet exercise.

How each tool calculates your SaaS metrics

Customer acquisition cost calculator

The CAC calculator takes your total sales and marketing spend, divides by new customers acquired, and returns your blended customer acquisition cost. It also breaks out channel-specific CAC so you can compare paid acquisition against organic and outbound. Benchmark bands show whether your CAC ratio is healthy for your stage and ACV.

Customer lifetime value calculator

The CLV calculator uses your average contract value, gross margin, and churn rate to estimate how much revenue each customer generates over their lifetime. Pair it with the LTV:CAC calculator to see whether you're growing efficiently or burning cash for growth. A ratio below 3:1 usually signals acquisition expenses are outpacing returns.

MRR and ARR calculators

Monthly recurring revenue and annual recurring revenue are the foundation of SaaS financial forecasting. These calculators roll up your customer count, average contract value, and billing cadence into clean MRR and ARR figures. They also decompose net new MRR into new business, expansion, contraction, and churned revenue — the components your finance team and investors want to see.

Net revenue retention calculator

NRR measures whether your existing customers are becoming more valuable or leaking revenue over time. It accounts for expansion, contraction, and churn in a single percentage. Above 110% means your installed base is growing without acquiring a single new customer — the metric every Series A+ board asks about.

Churn rate calculator

The churn rate calculator shows both logo churn and revenue churn side by side, annualized and monthly. Small differences in monthly churn compound fast — 3% monthly churn means you lose nearly 31% of your customer base annually. Understanding your churn rate is the first step toward reducing it — and the fastest lever to optimize revenue retention without acquiring a single new customer.

SEO ROI calculator

The SEO ROI calculator projects pipeline and revenue from organic search over 12–24 months. Input your current organic traffic, conversion rate, and average deal size. The calculator models compounding organic growth against your SEO investment to show expected return — useful when justifying budget to a CFO or comparing organic against paid acquisition channels.

Which metrics matter at each funding stage

Not every metric carries equal weight at every stage. Early-stage companies optimizing for product-market fit should focus on activation, churn rate, and customer acquisition cost. Growth-stage SaaS — roughly $5M to $30M ARR — shifts toward LTV:CAC efficiency, net revenue retention, and MRR expansion. Late-stage and pre-IPO companies add Rule of 40 scoring and SaaS valuation multiples to the mix.

These tools are organized around that progression: acquisition metrics first, then retention, then growth efficiency, and finally channel-level ROI. Use them individually or work through the full set as a quarterly health check.

How to use these calculators with your finance team

Each calculator produces a number your CFO or VP Finance can drop straight into a board deck or investor update. The benchmark bands translate raw metrics into context — "our CAC is $420, which is 35th percentile for Series B enterprise SaaS" carries more weight than a bare number.

For quarterly planning, run through the full set in order. Start with customer acquisition cost and lifetime value, check the ratio between them, then look at net revenue retention and churn to understand the health of your existing base. The story those five numbers tell together is more useful than any one in isolation.

How we keep benchmark data accurate

Benchmark data comes from three sources: published SaaS surveys (OpenView, KeyBanc, Bessemer), anonymized performance data from daydream's client portfolio, and public company filings. We update benchmark bands quarterly as new data becomes available. If you see a benchmark that looks off for your segment, it probably means your company is an outlier — which is exactly the kind of signal these tools are designed to surface.

What we're building next

We're adding calculators for Rule of 40, SaaS valuation using 2026 public-comp multiples, SEO cost budgeting, and marketing budget allocation by stage and ARR. Each follows the same pattern: real inputs, peer benchmarks, and a clear output you can take straight to your finance team or board deck.

Built by daydream's growth team. Used in our own client work. Free for anyone building in B2B SaaS.