Ten tools. No account. No opinions about your industry.
Every tool here prints the formula it used and a worked example you can check by hand. Nothing is benchmarked against an industry figure we cannot source — the only numbers on the page are yours and the ones they imply.
10 tools, one question each
Tagged campaign links that stay one campaign in your reports — lower-cased, hyphenated, and encoded once, correctly.
Run the numbers →Revenue per unit of ad spend, the ACOS that is the same figure inverted, and the spend a target ROAS allows.
Run the numbers →Profit left for every unit of ad spend, after COGS or variable costs and the advertising itself are taken out.
Run the numbers →The ROAS your gross margin demands before a campaign earns its first unit of profit — and how far above or below it you are now.
Run the numbers →What a customer costs to acquire, what they are worth in gross profit, and how long the acquisition takes to pay for itself.
Run the numbers →What a budget actually buys, step by step from spend to clicks to orders to revenue — using your numbers, not a benchmark.
Run the numbers →All three delivery metrics from the three raw counts, plus the identity that ties them together.
Run the numbers →Pass rates for every step, the end-to-end rate, and the step that is losing you the most people — which is rarely the one with the worst percentage.
Run the numbers →What one send is worth, what a month of sending is worth, and what a single subscriber is worth — from list size down to order value.
Run the numbers →What each CPM costs per click once a click-through rate is applied — every cell derived from one division, none of it observed data.
Start here
A campaign you cannot attribute is a campaign you cannot judge, and the tagging has to happen before the traffic arrives, not after. The UTM builder lower-cases and hyphenates values so one campaign stays one campaign in your reports instead of splitting into three.
Revenue is not profit
Return on ad spend uses revenue, while profit on ad spend subtracts COGS or variable costs and the ad spend itself. Use POAS when you have the campaign's direct costs; use the break-even ROAS when you are planning from a margin.
An identity worth keeping
Fix any two and the third is decided: CPC equals CPM divided by CTR times ten. The CPM, CPC and CTR tool shows all three at once, which makes it obvious when a platform report is quoting a different denominator than you assumed.
No industry averages
Marketing sites are full of confident claims about what a good CTR or a normal conversion rate is. We have no sourced figures for those, so we print none — the reference chart here contains only cells derived from a formula. An automated test fails the build if that kind of claim appears in the copy.
Where the money leaks
A funnel step with a 16% pass rate can be less urgent than one at 25%, because what matters is the headcount lost, not the percentage. The funnel calculator ranks the steps by people lost so the biggest leak is the one you see first.
Nothing is stored
These tools ask for ad spend, revenue, customer counts, and list size — commercially sensitive numbers, all of them. There is no account, no server call, and no database. The maths runs in your browser and the privacy policy sets out exactly what that means.