Free and Easy-to-Use Online Calculators

Calculators and other calculation tools to help you with study, maths, business, loans, trading and marketing.

Created by Gaurav Tiwari

A mathematician by education, an educator by hobby, and a developer by profession, Gaurav has over 13 years of experience in building tools for businesses and individuals.

So, if you are looking for quick, accurate answers without doing the math yourself? You’re in the right place. This page is a growing hub of free online calculators I’ve built to make your life easier—whether you’re a student, professional, or business owner.

From study hour planners to ROI estimators, these tools save time and remove the guesswork from everyday tasks. Each calculator is simple to use, designed with accuracy in mind, and works right in your browser—no downloads, no hidden catches.

I started creating these calculators because I noticed how scattered and overly complex most online tools are. Here, you’ll find clean, distraction-free calculators that actually solve your problem without pushing ads or forcing sign-ups.

Scroll down, pick a calculator that fits your needs, and let the numbers work themselves out. I regularly add new tools, so please bookmark this page and check back often.