CalculatorPK

Free online calculators and everyday tools

GST, EMI, percentage, age, BMI and more. Fast, free, and no sign-up. Most tools run entirely in your browser.

  • No registration
  • Works on mobile
  • Private by design
  • 16 free tools

Finance & Business

Percentage CalculatorFind percentages, percentage change, and add or subtract a percent.GST CalculatorAdd or remove GST using the current Indian GST rates.EMI CalculatorMonthly loan EMI, total interest and a full repayment schedule.Profit & Loss CalculatorProfit or loss with markup and margin percentages.

Health & Everyday

Age CalculatorExact age in years, months and days, plus your next birthday.BMI CalculatorBody Mass Index in metric or imperial units with a healthy weight range.

Maths & Measurement

Area CalculatorArea of a square, rectangle, circle or triangle in any unit.Unit ConverterConvert length, weight, temperature, area, volume and speed, including guntha, acre and tola.Average CalculatorMean, median, mode, range and standard deviation of any list of numbers.

Digital Utilities

URL ShortenerTurn a long link into a short one using TinyURL.QR Code GeneratorCreate QR codes for links, text, WhatsApp and social profiles.Image Color PickerClick any pixel of an image to get its HEX, RGB and HSL codes.Image Pixel CheckerCheck image dimensions, megapixels, file size and print size.

Creative

Headcanon GeneratorRandom headcanon ideas for characters and stories.Spin the WheelA random name picker wheel for classrooms, giveaways and quick decisions.Fancy Text GeneratorTurn plain text into bold, script, gothic and other styles you can copy.

Why use CalculatorPK?

Clear working

Every calculator shows the formula, a worked example and answers to common questions, so you understand the result and not just the number.

Kept up to date

For example, the GST calculator uses the Indian slabs in force since 22 September 2025.

Private

Your numbers are calculated on your own device. Nothing is stored in an account because there are no accounts.

Simple to use

Large inputs, plain language and a one-tap copy button make the tools quick on any screen size.

Frequently asked questions

Are all the tools free?

Yes. All 16 tools on CalculatorPK are free to use as often as you like, with no subscription and no sign-up.

Do I need to create an account?

No. Open a tool and start using it straight away.

Is my data stored or shared?

All tools except the URL Shortener run in your browser, so what you enter stays on your device. The URL Shortener is the one exception: it sends the link you enter to TinyURL to create the short link.

Are the results accurate?

The tools use standard formulas and we check them carefully, but they are for general guidance. For financial, tax, medical or legal decisions, confirm the figures with a qualified professional.

Do the tools work on my phone?

Yes. Every page is designed to work on phones, tablets and computers in any modern browser.

Can I suggest a new tool or report a mistake?

Yes, please use the Contact page. Corrections and ideas are welcome.