Everyday free utilities
Discount Calculator
Calculate discounted price, savings, discount rate, original price, and sequential stacked discounts.
Dokuntag Publish tools
Tools for clearer publishing decisions
Use focused publishing checks and simple everyday utilities in one place. General tools run locally in your browser and do not require an account.
Featured
Featured tools
Recommended starting points for common everyday calculations and publishing preparation tasks.
Everyday free utilities
Area Calculator
Calculate rectangle, square, triangle and circle area with selectable length and area units.
Everyday free utilities
Percentage Calculator
Calculate percentage of a number, percentage ratio, and percentage change instantly in your browser.
Everyday free utilities
Character & Word Counter
Count characters, characters without spaces, words, lines, and sentences without uploading your text.
Choose by outcome
Each group describes the job to finish, so you can select a tool without knowing its name.
Everyday free utilities
Run percentage, VAT, discount, area, unit-conversion and text-count tasks directly in your browser.
Selling decision and profitability
Evaluate whether a sale can meet your cost, fee and margin targets.
Listing preparation
Improve listing readiness, titles, bullets and keyword use before review.
Image and social preparation
Check image dimensions and social captions before publishing.
Guided start and workflows
Choose a marketplace path and move through preparation in a practical order.
Not sure where to start?
Use the beginner workflow to choose a channel, create a draft, run the right checks and review platform guidance in order.
General utilities provide direct calculations, conversions or counts. Publishing tools support preparation and common checks. Verify current official platform, tax or business rules when they affect a real decision.