Manarty brings together free online calculators, marketing utilities, text tools, and practical guides in one bilingual website. The tools run directly in a browser, require no download, and are designed for quick everyday, business, writing, and campaign tasks.
This guide is a starting point for the main Manarty tools and a broad selection of supporting articles. Use the sections below to find a calculator, understand its formula, and explore examples for a specific use case.
Free online calculators and tools on Manarty
Percentage Calculator
The Percentage Calculator finds a percentage of a number, the percentage one value represents of another, percentage increase or decrease, and a value after adding or subtracting a rate.
Start with How to Calculate Percentages: Formulas, Examples, and Business Uses or read how percentage calculations work.
Discount and VAT Calculators
The Discount Calculator shows a sale price, saving, discount percentage between two prices, and the true effect of stacked discounts. The companion guide explains how to calculate discounts and sale prices correctly.
The VAT Calculator adds tax to a net amount or extracts VAT from a tax-inclusive total. For the underlying method, see How to Calculate Tax Percentage.
ROAS and ROI Calculators
The ROAS Calculator measures revenue against advertising spend and includes related campaign metrics. Read How to Calculate ROAS and Measure Advertising Performance for definitions and examples.
The ROI Calculator calculates net profit, return percentage, and annualised return for an investment or project.
UTM Link Builder
The UTM Builder creates campaign URLs containing source, medium, campaign, term, and content parameters. These guides cover the workflow in more detail:
- How to Build UTM Links for Accurate Campaign Tracking
- UTM Source, Medium, and Campaign Explained
- UTM Best Practices for Social Media Campaigns
AI Prompt Optimizer
The AI Prompt Optimizer analyses an existing prompt or builds one from structured fields such as role, task, context, format, and constraints. The article How to Write Better AI Prompts provides practical examples for writing, summarisation, data analysis, and email tasks.
Word and Character Counter
The Word Counter measures characters, words, sentences, paragraphs, lines, reading time, speaking time, and word frequency.
- How to Count Words and Characters Accurately
- Ideal Word and Character Counts for Articles and Social Posts
Arabic RTL Text Fixer
The Arabic RTL Text Fixer prepares mixed Arabic copy containing numbers, Latin terms, and punctuation for advertising platforms. It adds invisible direction controls and offers optional punctuation, spacing, and digit cleanup.
- Fix Arabic RTL Text in Meta, Google, and TikTok Ads
- Arabic Ad Copy QA Checklist for Media Buyers
- How to Fix Mixed Arabic and English Text Direction
- Fix Arabic Text Direction in Word, Excel, and Social Media
Password Generator
The Password Generator creates random passwords or passphrases with controls for length and character types. Generation runs in the browser, and the result includes an estimated strength and search-space analysis.
Age and Working Days Calculators
The Age Calculator returns age in years, months, and days, plus useful totals and the time until the next birthday. Explore the related guides:
- Calculate Your Exact Age From Your Date of Birth
- How Old Are You in Days, Weeks, and Months?
- Calculate Your Age on a Specific Date
- How Many Days Are Left Until Your Next Birthday?
- Age in Hijri and Gregorian Calendars
The Working Days Calculator counts business days between dates after excluding a configurable weekend and entered public holidays. See How to Calculate Working Days Between Two Dates.
Unit Converter
The Unit Converter converts length, weight, temperature, area, and volume across common metric and imperial units.
- Complete Guide to Unit Conversion With Examples
- Convert Length, Area, and Volume Units Correctly
- Convert Kilograms, Pounds, Celsius, and Fahrenheit
Percentage formula library
Percentage questions vary according to the base value and the type of comparison. Manarty’s article library covers the most common search and business scenarios:
- How to Calculate a Percentage of a Number
- How to Calculate Percentage of Total
- How to Calculate Percentage Increase
- Percentage Increase Between Two Numbers
- How to Calculate Percentage Decrease
- How to Calculate Percentage Change
- Percentage Difference Between Two Numbers
- How to Calculate Percentage Growth
- How to Calculate Percentage Error
Adding, subtracting, and converting percentages
Use these guides when the task involves changing a value or moving between fractions, decimals, and rates:
- How to Add a Percentage to a Number
- How to Subtract a Percentage From a Number
- Convert a Fraction to a Percentage
- Convert a Decimal to a Percentage
- Convert a Percentage to a Decimal
Business, profit, salary, and everyday percentage guides
- How to Calculate Profit Percentage
- How to Calculate Profit Margin Percentage
- How to Calculate Markup Percentage
- How to Calculate Commission Percentage
- How to Calculate Salary Increase Percentage
- How to Calculate Exam Percentage
- How to Calculate a Tip Percentage
- How to Calculate a Discount Percentage
Why use Manarty?
- Free browser-based tools: no software installation is required.
- Arabic and English interfaces: tools and content are available in both languages.
- Mobile-friendly pages: calculators work on phones and computers.
- Transparent calculations: many tools display formulas, factors, or result breakdowns.
- Practical supporting content: articles explain how and when to use each calculation.
- Local processing where stated: privacy-sensitive text and security tools explain when work occurs inside the browser.
Choose the right tool for your task
- For prices and shopping, use the percentage, discount, and VAT calculators.
- For campaigns, use ROAS, ROI, UTM Builder, and Arabic RTL Fixer.
- For content and AI, use the Word Counter and Prompt Optimizer.
- For dates and HR, use the Age and Working Days calculators.
- For measurements, use the Unit Converter.
- For account security, use the Password Generator.
Frequently asked questions
Are Manarty tools free?
Yes. The public tools linked in this guide are available to use without a paid subscription.
Do I need to create an account?
No account is required to use the public calculators and utilities listed here.
Does Manarty work on mobile?
Yes. The tool pages are designed for modern mobile and desktop browsers.
Is Manarty available in Arabic?
Yes. The website provides Arabic and English versions with right-to-left support for Arabic pages.
Should calculator results replace professional advice?
No. Online calculators are useful for education, estimates, and workflow support. Verify inputs and results, and consult an appropriate professional or official source for financial, legal, medical, or other high-stakes decisions.
Start exploring
Visit the complete tools directory to choose a calculator or utility, or browse the Manarty article library for formulas, examples, and step-by-step explanations. Together, the tools and guides provide a practical reference for calculations, campaigns, writing, security, dates, and measurement conversion.