Business & Marketing Tools
Margin and markup, break-even, ROAS, seller fees, UTM links and search result previews – free calculators and tools for online shops and marketers.
A margin calculator with markup, break-even calculator, selling price calculator, marketplace selling fees, ROAS, ACOS, CPA, CPM, CPC and CTR, conversion rate and customer lifetime value. Plus a unit price calculator, volume discount tiers, UTM builder, URL slug generator, keyword combiner, SERP preview and Flesch reading ease.
15 tools
- Break-even calculatorBreak-even point calculator for small businesses: units and sales dollars to break even from fixed costs, price and variable cost, plus a target profit.
- Conversion rate calculatorCalculate your marketing conversion rate from visitors and conversions, plus average order value and revenue per visitor – or the traffic you need for a goal.
- CPM, CPC and CTR calculatorCalculate CPM, CPC and click-through rate (CTR) from cost, impressions and clicks – or work backwards to budget, impressions and clicks from CPM and CTR.
- Customer lifetime value calculatorCalculate customer lifetime value (CLV/LTV) from order value, purchase frequency, lifespan or churn and margin – with CAC, LTV:CAC ratio and payback period.
- Flesch Reading Ease CalculatorPaste your text to get the Flesch Reading Ease score, the score band, words per sentence and syllables per word – plus the German version by Amstad.
- Keyword combinerCombine up to 4 word lists into every keyword combination – with list order, separators and match types "phrase match" and [exact match]. No duplicates.
- Margin calculatorProfit margin calculator: margin %, markup %, gross profit and price multiplier from cost and price – or the selling price for a target margin or markup.
- ROAS calculatorCalculate ROAS as a ratio and a percentage, plus ACOS, CPA and your break-even ROAS from your margin – using the Google Ads and Amazon Ads definitions.
- Selling Fee Calculator for Etsy, eBay, Amazon and ShopifyCalculate Etsy, eBay, Amazon and Shopify seller fees: commission, payment processing, payout, profit and margin per sale – with sources, as of 09/2026.
- Selling price calculatorWork out the selling price of a product from cost, shipping, packaging, percentage selling fees and your target margin – fees are solved correctly.
- SERP Preview Tool With Pixel WidthEnter a title tag and meta description to preview the search result – with pixel width, character count and a note when the snippet is likely truncated.
- Unit price calculatorCompare 2–4 package sizes by price per ounce, fluid ounce, 100 g, kg or liter. Shows the best deal and how much you save in percent – oz, lb, g, mL, L or count.
- URL slug generatorTurn headlines into clean URL slugs: lowercase, hyphens, accents removed, stop words optional. Paste several titles at once and copy all slugs in one go.
- UTM builderAdd UTM parameters to links: utm_source, utm_medium, utm_campaign and more, correctly encoded, existing parameters kept. Campaign URL builder with typo checks.
- Volume discount calculatorTiered pricing calculator: unit price, total and savings for any quantity, the next price break and whether ordering more is cheaper. All-units or incremental.