Business & Marketing Calculators
Conversion values, lifetime value, and unit economics: the numbers that decide an ad budget or a price, with every assumption stated and the arithmetic shown.
Marketing & Ads 9
- ROAS CalculatorROAS plus the break-even ROAS your margin sets, and the real profit.
- CPA CalculatorCost per acquisition against the max CPA your margin can afford.
- Customer Lifetime Value CalculatorDiscounted LTV on a profit basis, plus your LTV to CAC ratio.
- Email Signup Value CalculatorWhat one newsletter signup is worth, ready to paste into Google Ads.
- Nonprofit Email Signup Value CalculatorWhat a newsletter signup is worth to a nonprofit, in donor lifetime value.
- Email Revenue CalculatorRevenue per email, per campaign, per subscriber, and honest email ROI.
- Cart Abandonment CalculatorYour rate vs the 70% average, and the honest recoverable revenue.
- AdSense CalculatorWhat your traffic earns, on Google's own published numbers.
- CPM CalculatorCost per thousand impressions, and the three things it hides.
Pricing & Profit 6
- Margin CalculatorGross, operating, and net margin as one ladder, plus target pricing.
- Markup CalculatorPrice from cost, cost from price, and how chained markups compound.
- Markup vs Margin CalculatorSame dollars, two denominators: both percentages side by side.
- Break-Even CalculatorUnits and revenue to cover the bills, plus your margin of safety.
- Price Elasticity of Demand CalculatorElasticity by the midpoint method, plus the profit answer.
- FBA CalculatorNet profit, margin, and ROI per unit after Amazon's fee stack.
Operations 3
- Invoice CalculatorLine items, discount, tax, and balance due, with the due date from your terms.
- Mileage Reimbursement Calculator2026 IRS rates including the July change, split-year math, taxable excess.
- Robot vs Labor Cost CalculatorWhen does a robot beat a wage? Honest payback math where hours, not price, decide.
More tools 18
- Airbnb CalculatorWhat renting a spare room really nets after Airbnb's cut, cleaning, and utilities.
- Burn Rate CalculatorHow long your cash lasts, and how often a deal has to close to keep it lasting.
- Commute Cost CalculatorWhat the commute really costs, in cash and in hours.
- eBay Fee CalculatorWhat eBay's fees take from the seller, and whether the flip made money.
- Etsy Fee CalculatorEvery fee Etsy charges the seller, and what you keep on a sale.
- Food Delivery Pay CalculatorWhat delivery really pays after the car and taxes, and the bike that changes it.
- Freelance Rate CalculatorThe rate you need once unbillable hours, tax and unpaid holiday are counted in.
- Idle Cost CalculatorThe cost of engines running while going nowhere.
- KDP Royalty CalculatorWhat Amazon actually pays you per copy, after delivery fees and printing.
- Pressure Washing CalculatorWhat a pressure washing job really pays, and what a fair quote looks like.
- Rideshare Driver Pay CalculatorWhat Uber or Lyft driving really nets after the car and taxes, line by line.
- Rover CalculatorWhat Rover sitting really nets after the 20 percent cut, supplies, and taxes.
- Trucking Cost Per Mile CalculatorYour real cost per mile, and the rate that breaks even.
- Turo CalculatorRent your car on Turo? The honest net after the split, wear, and cleaning.
- Tutoring Income CalculatorWhat tutoring really pays after the platform's cut, prep time, and taxes.
- Vending Machine CalculatorWhat a vending machine really nets after the location's cut, and when it pays back.
- Voice Typing CalculatorHow much time voice dictation really saves, once your whole day is counted.
- YouTube Money CalculatorWhat your views actually pay, as an honest range instead of a fantasy figure.
Which business calculator do you need?
- Pricing and profit. margin measures what you keep, markup sets the price from the cost, and markup vs margin exists because confusing the two is the most expensive arithmetic error in small business.
- Viability. The break-even calculator tells you the volume that covers your fixed costs, in units or in revenue.
- Ad spend. ROAS and CPA, both of which need your margin before they can say whether a campaign is actually profitable.
- Customer value. lifetime value upstream, then email signup value or the nonprofit version to turn it into a conversion value you can feed an ad platform.
- Email and checkout. email revenue per send and cart abandonment recovery, both benchmarked against published industry figures.
- Admin. invoices with tax and terms, mileage reimbursement at current IRS rates, and the FBA calculator for per-unit Amazon profit.
Margin and markup are not the same number
A 50 percent markup is a 33 percent margin. Multiply cost by 1.5 when you meant to hit a 50 percent margin and you have priced 17 points of profit away on every unit you sell. Markup is measured against cost, margin against price, and the gap between them widens the higher you go: a 100 percent markup is a 50 percent margin, and a 300 percent markup is a 75 percent one.
This is why the markup vs margin page shows the trap explicitly rather than just converting between the two. If you take one thing from this category, take this: to hit a target margin you divide by one minus the margin, you do not multiply by one plus it.
A metric without margin is not an answer
ROAS of 3.5x sounds good and can be losing money. At a 25 percent margin, break-even ROAS is 4.0x, because every advertising dollar has to be recovered out of gross profit rather than out of revenue. The same logic governs CPA: the number that matters is not what you paid to acquire a customer, it is what you paid against what that customer is worth. Both of those calculators ask for margin first, and they ask because the answer is meaningless without it.
The other thing worth stating plainly: benchmarks are averages with soft definitions underneath. A published figure like a 70 percent cart abandonment rate or 10 cents of revenue per email is a useful anchor and a poor target. Your business is not the average of everyone else's.
Frequently asked questions
What is the difference between margin and markup?
Markup is measured against your cost, margin against your selling price. A 50 percent markup produces a 33 percent margin, and the two diverge further as they rise: a 100 percent markup is a 50 percent margin. To hit a target margin you divide cost by one minus the margin. Multiplying cost by one plus the margin is the common mistake and it silently underprices every unit.
What ROAS do I need to break even?
One divided by your gross margin. At a 25 percent margin you need 4.0x, at 40 percent you need 2.5x, and at 50 percent you need 2.0x. This is why a 3.5x ROAS can be a loss: advertising has to be paid out of gross profit, not out of revenue. Our ROAS calculator asks for margin for exactly this reason.
Should I use revenue or profit as the basis for these numbers?
Profit, wherever you can. Revenue-based figures flatter you and lead to overbidding, because they treat every sales dollar as if it were yours to spend. Where a calculator here can accept either, it tells you which basis it used and what that assumption implies, rather than quietly picking the more optimistic one.
How current are the benchmark figures you quote?
Each page that quotes a benchmark carries a data-reviewed date and names the source, and those figures are on a refresh list rather than left to rot. Treat them as anchors for orientation rather than targets: they are industry averages with loose definitions underneath, and your own numbers are the ones that matter.