Campaign ROI calculator
Calculates campaign ROI based on spend and revenue.
Working
Open
Tools and calculators for websites, advertising, and layout
Open the page, enter your data, and get the result. Free, with no registration or limits. Your browser does the calculations: what you enter is not sent to the server or saved.
44 in the catalog 32 tools 12 calculators
It all started with these two
The first two
I wrote these two for myself before the others and left them open to everyone. No registration, no ads, and no data sent anywhere — everything is calculated on your machine.
Todo List
Browser-based todo list: no account, everything is stored on your device.
Working
Open
tile color — category =equals sign — calculator
Popular tools
Generate, convert, validate, and format. Results appear immediately on the screen.
Transliteration for SEO-friendly URLs
Transliterates Cyrillic into Latin characters according to URL rules.
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Password generator
Creates passwords of the required length and assesses how difficult they are to crack.
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Typographer: guillemets, dashes, nonbreaking spaces
Adds guillemets, dashes, and nonbreaking spaces.
Open
Image compression in the browser
Reduces the file size of JPEG, PNG, and WebP—the file is never uploaded.
Open
Character and word counter
Counts characters, words, and reading time, with limits for title and description.
Open
Popular calculators
Each calculates one number from the data you enter, with the formula in view.
Campaign ROI calculator
Calculates campaign ROI based on spend and revenue.
ROI = (revenue − spend) \/ spend × 100%
Working
CPC, CPM, and CTR
Three core metrics based on impressions, clicks, and budget.
CPC = spend / clicks
Open
ACoS and ROAS
Ad spend as a share of revenue and the return on every dollar invested.
ACoS = spend / revenue × 100%
Open
Margin and markup
Converts markup to margin and back, and calculates profit per transaction.
margin = (price − cost) / price
Open
LTV and CAC
Lifetime customer revenue and acquisition cost.
LTV = order value × purchase frequency × lifespan
Open
Two catalogs
The distinction is simple: a calculator calculates a number from the data you enter; a tool does everything else.
Tools
Generate code and files, convert one thing into another, validate markup, and put text in order.
- SEO and promotion
- CSS and layout
- Design and color
- Text and content
- For developers
- Work
32 tools in 6 categories
Calculators
Calculate a number: ROI, cost per click and lead, margin, tax, page weight. The formula is shown for each one.
- Advertising and traffic
- Business and money
- Website and hosting
12 calculators in 3 categories
Why everything is calculated in the browser
Your data stays with you
Prices, text, and images are processed on your machine. The server receives only the request for the page itself.
Instant results
No waiting: the result is recalculated as you type, without submitting a form or reloading the page.
Asks nothing in return
No email, account, or limit on the number of calculations. You can simply save the tool's link as a bookmark.
From the blog
Articles and notes about websites, promotion, and working online
- 2016Use browser cache for Google PageSpeed
- 2015How do I bulk replace files in folders after processing?
- 2014Building an up-to-date list of classified ad sites in Ukraine or any other country!
- 2014Accelerated identification of Yandex.Money in Ukraine
The blog stays: I rewrite some posts and remove others. The dates are real. All blog posts