Biswajit's Portfolio & Calculator Hub

Welcome to my professional portfolio showcasing my development expertise and a comprehensive suite of calculators I've created. Explore my projects and tools below.

View My Work Calculator Tools

Calculator Categories

Financial

Calculators for loans, investments, budgeting, and more.

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Math

Basic and advanced math calculations made simple.

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Health & Fitness

Track your health metrics and fitness goals.

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Conversion

Convert units of measurement quickly and accurately.

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Auto

Calculators for car loans, fuel efficiency, and vehicle costs.

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Biology

Calculators for DNA analysis, protein calculations, and cell growth.

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Chemistry

Calculators for molar mass, stoichiometry, and chemical reactions.

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Photography

Professional photography calculators for lighting, ratios, and exposure.

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Construction

Calculators for concrete, paint, flooring, and building materials.

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Cooking

Calculators for recipes, baking times, and ingredient conversions.

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Misc

Miscellaneous calculators for various everyday tasks.

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Physics

Calculators for speed, force, energy, and projectile motion.

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Did You Know?

💡

Interesting Calculation Facts

The concept of zero as a number was first developed in ancient India around the 5th century AD. This revolutionary idea transformed mathematics and made complex calculations possible.

π Trivia

Pi has been calculated to over 31 trillion digits!

Fibonacci

These numbers appear everywhere in nature, from pinecones to galaxies.

Prime Numbers

There are infinitely many prime numbers, as proven by Euclid around 300 BC.

Latest Calculator Updates

New Cooking Calculators

Added recipe scaling and baking time calculators for home chefs.

Added: December 15, 2025

Improved Financial Calculators

Enhanced accuracy and added inflation adjustment to mortgage calculator.

Updated: December 10, 2025

Mobile Responsiveness

All calculators now work seamlessly on mobile devices with improved UI.

Updated: December 5, 2025

Frequently Asked Questions

Are your calculators free to use?

How accurate are your calculations?

Can I use these calculators on my mobile device?

Do you store any of my data?

My Portfolio

About Me

Hello! I'm Biswajit, a passionate web developer specializing in creating useful tools and applications. With expertise in HTML, CSS, JavaScript, and various web technologies, I've developed a comprehensive suite of calculators that solve real-world problems.

My journey in web development has been driven by a desire to create accessible, user-friendly tools that empower people to make informed decisions. The calculator suite you see here represents hundreds of hours of work refining algorithms, designing intuitive interfaces, and ensuring accuracy.

Technical Skills

HTML5

CSS3

JavaScript

React

Node.js

Python

Java

Algorithms

Projects

The calculator suite on this website represents my flagship project, comprising over 100 specialized calculators across various domains including finance, mathematics, health, and science. Each calculator is designed with accuracy, usability, and performance in mind.

grams-to-cups.com

User-friendly cooking measurement converter helping users seamlessly convert between grams, cups, ounces, and other units. Perfect for home cooks and professional chefs seeking precision in the kitchen.

JavaScript Utility Conversion
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snowdaycalculatorai.com

Get accurate snow day predictions based on real-time weather data and historical school closing patterns. AI-powered calculator analyzes weather conditions to predict school closures with 95% accuracy.

AI / ML Weather Prediction
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RecipeScaler+ Logo

RecipeScaler+

Android app for scaling recipes easily. Adjust ingredient quantities for different serving sizes with precision, making cooking adjustments simple and accurate.

Android App Cooking Recipe
Download on Google Play