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ToolHub

Everyday Calculators

Percentage CalculatorFind X% of a number, percentage change and more.
Age CalculatorExact age in years, months and days, plus your next birthday.
CGPA / GPA CalculatorSemester GPA and CGPA on the COMSATS/HEC 4.0 scale.

Finance Calculators

Loan / EMI CalculatorMonthly payment, total interest and yearly schedule.
Compound Interest CalculatorSee how savings grow with compounding and monthly deposits.
Tip CalculatorWork out the tip and split the bill between friends.
Currency ConverterLive exchange rates for PKR, USD, SAR, AED, GBP and 35+ currencies.
Discount & Sales Tax CalculatorSale price after discount, extra % off, and GST or sales tax.
Fuel Cost CalculatorTrip fuel cost from distance, mileage and petrol price.

Pakistan Tools

Salary Tax Calculator PakistanIncome tax and take-home pay under the 2026-27 FBR slabs.
Zakat CalculatorZakat due on cash, gold, silver and business assets.
Electricity Bill CalculatorEstimate your LESCO, IESCO or other DISCO bill from units used.
Amount in WordsWrite any amount in words in rupees (lakh/crore) or millions, for cheques.

Health & Fitness

BMI CalculatorBody Mass Index in metric or imperial units.
Calorie CalculatorDaily calories, BMR, TDEE and macros for your weight goal.

Date & Time

Date CalculatorDays between two dates, business days, or add and subtract days.
Time Zone ConverterConvert a time between Pakistan, the Gulf, UK, US and 60+ cities.
Online StopwatchAccurate stopwatch with laps and keyboard shortcuts.
Countdown TimerOnline timer with an alarm sound, presets and a progress ring.
Pomodoro TimerFocus in 25-minute sessions with automatic breaks.

Text Tools

Word CounterCount words, characters, sentences and reading time.
Case ConverterUPPER, lower, Title, Sentence, camelCase and more.
Typing Speed TestTest your typing speed in WPM with live accuracy.

Image & PDF Tools

Image CompressorShrink JPG, PNG and WebP images without uploading them.
Image ConverterConvert between JPG, PNG and WebP and resize, in your browser.
Merge PDFCombine several PDF files into one, privately.
Split PDFExtract pages or split a PDF into separate files.

Developer & Device Tools

JSON Formatter & ValidatorPretty-print, minify and validate JSON.
Base64 Encoder / DecoderEncode text to Base64 or decode it back (UTF-8 safe).
Keyboard TesterCheck every key on your keyboard works, online.

Converters & Generators

Unit ConverterLength, weight, temperature, volume and speed.
Password GeneratorStrong random passwords, generated in your browser.
QR Code GeneratorFree QR codes for links, Wi-Fi, WhatsApp, email and more.

Contact us

Questions, feedback, a bug report or an idea for a new tool? We'd love to hear from you.

Email either of the developers directly. We usually reply within two business days.

ToolHub is built by students of the Department of Computer Engineering, COMSATS University Islamabad, Abbottabad Campus.