Fast • Free • Privacy-friendly
Everyday online tools, thoughtfully built
Calculate percentages, age, Zakat, PTA tax estimates, fuel average and loan payments—then convert text, images and units from the same clean website.
All tools
Choose the tool you need
21 working tools organised into calculators, text tools, image and PDF utilities, and converters.
Percentage Calculator
Calculate a percentage of any number, find what percent one value is of another, or measure percentage increase and decrease instantly.
Open tool →Age Calculator
Calculate exact age from a date of birth in years, months and days, plus total days, full weeks and time until the next birthday.
Open tool →EMI Calculator
Estimate monthly EMI, total loan interest and total repayment using the loan amount, annual interest rate and repayment period.
Open tool →Discount Calculator
Calculate the final sale price, discount amount and total savings from an original price and discount percentage.
Open tool →Marks Percentage Calculator
Calculate exam or assignment percentage from marks obtained and maximum marks, with remaining marks and a simple performance summary.
Open tool →Simple Interest Calculator
Calculate simple interest and final amount from principal, annual interest rate and time in years or months.
Open tool →Compound Interest Calculator
Calculate compound growth, future balance and interest earned with annual, semi-annual, quarterly, monthly or daily compounding.
Open tool →Date Difference Calculator
Calculate the exact difference between two dates in years, months and days, plus total days, full weeks and weekend days.
Open tool →Zakat Calculator
Estimate Zakat at 2.5% on cash, gold, silver, investments and business assets after short-term liabilities.
Open tool →PTA Tax Estimator
View reference CNIC and passport mobile-registration tax estimates for selected phone models and verify officially through DIRBS.
Open tool →Fuel Average Calculator
Calculate km/L, litres per 100 km and fuel cost per kilometre, then compare the result with an indicative car-model range.
Open tool →Text Case Converter
Convert text to uppercase, lowercase, title case, sentence case, alternating case or inverse case without uploading your text.
Open tool →Word Counter
Count words, characters, sentences and paragraphs while you type, with an estimated reading time for your text.
Open tool →Character Counter
Count text characters, words and remaining characters against any custom limit with a live progress indicator.
Open tool →Remove Extra Spaces
Remove repeated spaces, trim each line and optionally delete blank lines while keeping your text private in the browser.
Open tool →Image to PDF
Combine JPG, PNG and WebP images into one downloadable PDF with page orientation, margins and quality controls. Files stay in your browser.
Open tool →Image Compressor
Compress JPG, PNG and WebP images by adjusting quality, maximum width and output format directly in your browser.
Open tool →Image Format Converter
Convert an image between JPG, PNG and WebP formats locally in your browser, with adjustable quality for JPG and WebP output.
Open tool →Length Converter
Convert length and distance between millimetres, centimetres, metres, kilometres, inches, feet, yards and miles.
Open tool →Weight Converter
Convert mass and everyday weight units between milligrams, grams, kilograms, tonnes, ounces, pounds and stones.
Open tool →Temperature Converter
Convert temperature instantly between Celsius, Fahrenheit and Kelvin, with an absolute-zero warning for invalid physical values.
Open tool →No matching tool found.
Categories
Browse by category
Related tools are linked together to make the next task easy to find.
Calculators
Percentage, age, Zakat, PTA tax, fuel, loan, interest, discount and date calculators.
11 toolsText Tools
Privacy-friendly writing utilities for case conversion, counts and text cleanup.
4 toolsImage & PDF Tools
Convert, compress and combine images locally in your browser.
3 toolsConverters
Convert common length, weight and temperature units instantly.
3 toolsOne focused page for every task
Each ToolSyn tool has a descriptive page, visible instructions, worked examples, limitations and links to closely related tools. This keeps the website useful for visitors and easy for search engines to crawl.
Fast and private by design
Calculators and text tools run with local JavaScript. Image tools process selected files in the browser, so ToolSyn does not operate an upload server for those files. The site uses lightweight system fonts to avoid an extra font download.
Accurate results with clear limits
Mathematical tools show the formula or method used. Financial results remain estimates, and educational or official decisions should follow the relevant bank, school, university or authority.
Why ToolSyn
Useful results without unnecessary complexity
Each page pairs a working tool with the calculation method, examples, limitations and related links. Financial and official estimates clearly explain when external verification is required.