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Tools · 12 calculators

Operator calculators.

Free. Shareable URLs. Embeddable. The math operators and finance teams actually use to decide what to scale, what to cut, and what to fix.

D2C / Ecommerce

True ROAS Calculator

Blended ROAS hides whether you are actually making money on the campaign. True ROAS subtracts COGS, returns, shipping, and payment fees from revenue before dividing by ad spend — so what you see is the margin the channel earned, not the gross revenue it generated.

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SaaS Metrics

Rule of 40 Calculator

The Rule of 40 says a healthy SaaS company's growth rate plus profit margin should sum to at least 40%. It is the single number investors use to decide whether to underwrite growth-at-any-cost or demand efficiency.

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Unit Economics

LTV:CAC Calculator

LTV:CAC tells you whether the lifetime value of a customer justifies what you paid to acquire them. The healthy band is 3.0× — below that you have an acquisition problem, above 5.0× you are usually under-investing in growth.

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Unit Economics

CAC Calculator

Most CAC numbers are wrong because they exclude salaries and tooling. This calculator computes fully-loaded CAC the way investors and buyers actually measure it — paid spend plus the people and software it took to convert.

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RevOps

Pipeline Coverage Calculator

Pipeline coverage tells you whether you have enough opportunities in the funnel to hit the number — with a margin of safety. 3.0× coverage is the common target; below 2.5× the quarter is at risk; above 4.0× you usually have a velocity problem, not a coverage one.

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Profitability

Contribution Margin Calculator

Contribution margin is revenue minus variable costs — the dollars left over to cover fixed costs and contribute to profit. Per-unit contribution and total contribution drive every channel-, SKU-, and pricing-level decision.

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SaaS Metrics

Burn Multiple Calculator

Burn multiple is the cleanest measure of SaaS capital efficiency: how much you burn for every dollar of net new ARR. Under 1.0× is best-in-class; 1.0–1.5× is healthy; above 2.0× is a problem at any stage.

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SaaS Metrics

SaaS Magic Number Calculator

SaaS magic number is the simplest go-to-market efficiency metric: how much ARR did one dollar of sales and marketing produce, annualized? It is the Bessemer-popularized companion to burn multiple, and it focuses specifically on the GTM engine.

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Forecasting

Forecast Variance Calculator

Forecast variance is the gap between what you said would happen and what did. Three measures matter: absolute variance (the dollar gap), variance % (the proportional gap), and bias (whether you systematically over- or under-forecast). This calculator computes all three.

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Unit Economics

Blended CAC Calculator

Blended CAC divides total acquisition spend by total new customers — including the customers who came in organically. It is a lower number than paid CAC but a better one for capital efficiency benchmarking, because it captures the full cost of the growth machine.

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Unit Economics

Customer LTV Calculator

Customer LTV is the gross-profit dollars one customer produces across their full lifetime. The simple form: ARPU × gross margin ÷ monthly churn. The right form depends on whether you have stable churn, cohort retention curves, or expansion-heavy NRR. This calculator computes the simple form and the expansion-adjusted form.

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Forecasting

Revenue Forecast Calculator

A simple revenue forecast for SaaS or subscription businesses. Project the next quarter from current ARR using growth rate, churn, and expansion. The calculator outputs a base case plus optimistic and conservative bookends.

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Calculators are nice. Knowing what to do next is better.

Fairview connects your CRM, finance, and ad data — then tells you which actions move the metrics these calculators measure.