Ad Revenue Calculator
Estimate monthly display ad earnings from pageviews, ads per page, fill rate and CPM, with page RPM.
Read moreFree tools
Calculators
The sums that come up often enough to be worth a page.
- 451 items
Customer Lifetime Value Calculator
Estimate what a customer is worth over the whole relationship, and how much you can afford to spend to win one.
Read moreA/B Test Significance Calculator
Find out whether variant B really beat variant A, by how much, and how many visitors a reliable test needs.
Read moreCPM, CPC and CTR Calculator
Turn raw campaign numbers into CPM, CPC, CTR, conversion rate and CPA, or work backwards from a goal to the budget it needs.
Read moreROAS Calculator
Work out return on ad spend, the ROAS you need to break even, and whether a campaign is actually making a profit.
Read moreAd Performance Calculator
Turn an ad budget into expected impressions, clicks, conversions and cost per result, then compare six platforms side by side.
Read moreProfit Margin Calculator
Confusing margin with markup is how a business prices itself into a loss.
Read moreLoan Repayment Calculator
The arithmetic a lender uses, with an honest note about what it leaves out.
Read moreDate Difference Calculator
Dividing by seven gets working days wrong by up to two days. This walks the range.
Read morePercentage Calculator
The three percentage questions that come up most often, answered at once.
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