Free tools that give you a number in a minute
Break-even ROAS, colour contrast, EAA scope and Microsoft Ads test budget. Each tool runs in your browser and nothing you type is sent anywhere.
Target 3.33×, up to €18.00 per order. €60 order, 40 % margin.
Passes AA for body text. #0A3D8F on #FFFFFF.
Consumers, above micro size, EU customers.
About 306 clicks and 12.2 conversions a month from €2,000 Google spend.
Break-even ROAS
Break-even ROAS = 1 ÷ margin. Target ROAS = 1 ÷ (margin − profit). Below the yellow mark every sale loses money once the ad is paid for.
Hover over or tab to a tile to open its tool below; arrow keys move between tiles. Every tile keeps its live result while you work in another.
Every free tool on the site
10 tools live on the pages where they are most useful. Here they are in one place, sorted by the question each one answers, with what you put in and what you get back.
10 tools
What number do I need?
Targets and budgets worked out from your own figures.
- Break-even ROAS and CPA calculatoron GuidesINOrder value, margin, profit target, refunds, VAT basisOUTBreak-even and target ROAS, most you can pay per order, three scenariosOpen
- Microsoft Ads test-budget calculatoron Microsoft AdvertisingINGoogle spend, CPC and conversion rate, your assumptions for MicrosoftOUTTest budget, expected clicks and conversions, cost per conversion side by sideOpen
Does it pass?
Quick checks against a rule, with the rule shown.
- Colour contrast checkeron Accessibility auditsINText colour and background colourOUTWCAG 2.2 contrast ratio, AA and AAA result for text and controlsOpen
- EAA scope checkon European Accessibility ActINWho you sell to, company size, where your customers areOUTWhether the European Accessibility Act is likely to apply to your storeOpen
- Crawl simulatoron Technical SEO auditINrobots.txt and sitemap on or off, crawl depthOUTWhich pages a crawler finds, step by step, and which it never reachesOpen
What do I paste?
Finished code, records and copy you can use straight away.
- Hreflang tag generatoron International SEOINMarkets and languages, domain, page path, x-defaultOUTHreflang link tags for every version, ready to copyOpen
- Email DNS record builderon Email deliverabilityINServices that send mail as your domain, SPF ending, DMARC policy, report addressOUTSPF and DMARC records as zone-file lines, with the SPF lookup countOpen
- Store listing editoron App careINYour app name, subtitle and descriptionOUTLive character counters and App Store and Google Play previewsOpen
Which way should I go?
Decisions laid out with the trade-offs visible.
- Platform comparisonon Shopify vs WooCommerce vs Magento vs OpenCartINWeights for seven criteria, monthly sales, developer rateOUTFour platforms ranked with the scoring rule shown, three-year cost of ownershipOpen
- App scope builderon Mobile appsINFeatures and platforms you wantOUTA first phase that fits, with what moves to laterOpen
Your break-even ROAS is 2.50× and your colour pair reads 10.11:1. Try the other two tiles; each takes about a minute.
Use a free toolWhat these tools will not tell you
A calculator is only as good as the numbers you give it. These are the limits I would want to know about before acting on a result.
Your margin is a guess until it is not
ROAS targets move fast with margin. A margin that leaves out payment fees, returns postage or discounts makes every target look easier than it is. Work it out from a real month of orders first.
A pass is not an audit
A contrast ratio and a scope check answer one question each. Keyboard use, screen readers, forms and focus order need a person testing real pages. That is what the accessibility audit is for.
Platform numbers are assumptions
The Microsoft Ads model runs on your figures and your guesses about clicks costs. A small, time-boxed test with clean tracking replaces the guess with your own data.
Your numbers stay on your device
Every calculation on this page runs in your browser. The only thing that can send anything is a form, and only when you press its button.
No tool stores what you type, not even in your browser. Reload the page and the defaults come back. The site's analytics, if you allow them, record that a tool was used, never the values.
Suggest a tool
What number or check do you keep working out by hand? If it would help other store owners, it gets built.
For example: shipping cost per order across three carriers.
Questions about the free tools
Do the tools store my data?
No. Every calculator and checker runs in your browser, and nothing you type is sent to me or saved, not even locally. Reload the page and the defaults return. If you accept analytics cookies, the site records that a tool was used, never the numbers or colours you entered. Only a form you submit sends anything.
Are the results accurate?
The maths is exact; the inputs are yours. Contrast uses the WCAG 2.2 formula, and the ROAS figures follow directly from your margin. The EAA check is a first indication, not legal advice, and the Microsoft Ads model depends on your own assumptions. Each tool shows its formula so you can check it.
Can I suggest a tool?
Yes. Use the suggestion box above or email me the calculation you keep doing by hand. If other store owners are likely to need it too, it gets built and added here, free like the rest. If you leave an email address, you get a reply within one working day.
Not sure what your result means?
Send the number and what you were trying to decide. You get a plain-language answer within one working day, and a fixed price only if there is work worth doing.
Your results so far: ROAS: break-even 2.50×, target 3.33× (40 % margin, 10 % profit). Contrast: 10.11:1 for #0A3D8F on #FFFFFF. EAA: likely in scope. Microsoft Ads test: €300 a month, about 12.2 conversions.
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Pikselipolku is an independent studio and is not affiliated with Google, Microsoft or any other platform named here.