Calculator app for Android — EMI, SIP, GST, scientific & more
All in One Calculator puts the calculators people use every day into one lightweight app: loan and investment maths, a scientific calculator, unit converters and BMI. From the team behind MoreCalculators.com.
What's inside the app
Tap any linked tool to try its web version right now — same maths, no install.
Finance
Loans, savings and tax-season basics.
Math
From quick sums to equation solving.
- Basic Calculator
- Scientific Calculator
- Quadratic Equation Solver
- LCM / GCD (HCF) Calculator
- Linear Equation Solver
- Polynomial Calculator
- Rational Expression Calculator
- Exponent Calculator
- Modulus Calculator
- Trigonometry Calculator
Geometry
Area and volume for common shapes.
- Circle, Triangle, Rectangle, Ellipse
- Parallelogram, Trapezium, Sector
- Sphere, area and volume calculators
Unit converters
Convert on the go, no signal-hunting for a site.
Why people use it
- Fast and accurate results for everyday finance, maths and conversions.
- Clean, easy-to-use interface — built for quick answers, not menus.
- Lightweight — small to download and quick to open.
- One app for students, professionals and business users, designed for users in the USA, Canada, Europe and India.
App and website work together
Use the app for the tools you reach for daily. Use the website when you need the wider library — income tax (FY 2025-26), home loan, capital gains and health & fitness — and the guides that explain how each formula works. Browse everything in all calculators.
Frequently asked questions
How do I download the app?
Open the app's Google Play page from any button on this page, then tap Install. It's published on Google Play as "All in One Calculator" by the MoreCalculators team.
Do I need the app to use MoreCalculators?
No. Every calculator on this website is free in your browser with no signup or login. The app is simply a faster way to reach the most-used tools from your phone.
Which calculators are in the app?
Finance (EMI, SIP, PPF, FD, NPS, GST and more), math (basic, scientific, equation solvers, trigonometry), geometry, unit converters including currency, and a BMI calculator. The full list is above.
What does the website have that the app doesn't?
The website carries the wider library, including India-specific tools such as the income tax calculator, HRA, capital gains and home-loan prepayment, plus guides that explain the formulas.
Is it built for users outside India?
Yes. The listing says it is designed for users in the USA, Canada, Europe and India, and the unit, math and currency tools work anywhere.
I found a wrong result or have a request. Where do I send it?
Use the contact page and tell us which calculator and what you entered. We read every report. Contact us →