fisagency Calculators

Marketing calculators for values-led growth

Decide where to spend, what acquisition costs, and whether channel return is worth defending. Built for teams that grow without greenwashing.

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22 calculators Standard formulas Updated July 2026

How we treat the math

ROI Calculator

See whether spend is creating return worth defending.

ROAS Calculator

Judge paid media by revenue returned per dollar spent.

Customer Acquisition Cost (CAC)

Know what it costs to win a customer before you scale.

Blended CAC / MER

See true acquisition cost across the full channel mix.

Lifetime Value Calculator

Set acquisition ceilings against long-term customer value.

Subscription LTV + Churn

Forecast subscriber value after churn so retention spend stays honest.

Payback Period

Know how long until CAC pays for itself.

Ad Spend Optimizer

Split paid budget toward channels that earn their keep.

Creative Testing Budget

Size a test budget you can defend without starving winners.

Conversion Rate Calculator

Measure how well traffic becomes the action you need.

Funnel Conversion Optimizer

Find where the funnel loses people and what that costs.

PPC Performance Calculator

Read CPC, CTR, and conversion together before you raise bids.

Content Marketing ROI

Weigh content cost against the demand it actually creates.

SEO ROI Calculator

Put a value on organic traffic before you commit more months.

AEO Readiness

Score how ready your content is for answer engines and AI citations.

Green Claims Risk

Spot sustainability claim risk before platforms or regulators do.

Social Media ROI Calculator

Separate vanity metrics from social spend that returns.

Email Marketing Calculator

Value the list and the campaigns that keep it earning.

Budget Calculator

Allocate marketing spend with a clear planning frame.

Break-Even Calculator

Know when a campaign pays back before you double down.

A/B Test Calculator

Confirm a lift is real before you ship the winner.

Incrementality / Lift

Separate true incremental lift from attributed credit before you scale.

Need the numbers turned into a plan? Read Intelligence guides on healthy CAC, ROAS benchmarks, and blended channel mix — or book a free growth audit.

Common questions

How to use this suite

Short answers for the decisions these tools are built to support.

Which metrics should I open first?

Start with ROI for the full picture, CAC when acquisition feels expensive, and Blended CAC when channel mix hides true cost. Add LTV, Subscription LTV, and payback once you need a ceiling for what you can afford to spend and how long recovery takes. Use Incrementality when attributed ROAS feels inflated, and AEO readiness when answer engines matter.

What counts as a strong marketing ROI?

Many teams aim near 5:1 overall ($5 returned per $1 spent). Channel ranges differ widely. Treat published benchmarks as directional, then judge your own mix against payback time and margin, not a single industry average.

How should I split budget across channels?

Keep most spend on channels that already return cleanly, reserve a smaller share for promising new bets, and protect a test slice so you can learn without starving what works. Revisit the split when CAC, ROAS, or payback shifts.

How do you treat the math?

Each calculator uses standard marketing formulas with transparent inputs. Benchmarks are planning ranges, not guarantees. They move with industry, attribution, and channel mix, so use them to frame a decision, not to replace judgment.

When is an A/B result ready to trust?

Aim for about 95% confidence, enough sample for your baseline conversion rate, and a run long enough to cover normal weekly patterns. Equal traffic splits and no major external shocks keep the read honest. For paid media, follow with Incrementality when you need to know if the lift is truly incremental.

Which path should I take if I am unsure?

Open the paid path (ROAS → Creative testing → Incrementality) when you need to prove media before you scale. Use acquisition waste when spend feels high relative to customers won. Use retention value when churn or subscriber economics matter. Use visibility and trust when SEO, answer engines, or claim risk is the blocker.