Making everyday calculations easier
CalculStore is a free collection of online calculators for money, health, math and everyday life. Open one, get your answer and get on with your day.
Browse calculators- Loan amount$262,500
- Down payment$87,500
- Total interest$136,222
- Paid off in15 yr
An example result from our mortgage calculator.
What CalculStore is
We built CalculStore for the sums that come up in a normal week: what a loan will really cost, how many days are left until a deadline, what 15% off comes to.
Each calculator does one thing and explains its result in plain language. There's nothing to install and no account to set up.
To make the numbers people run into every day quick to work out and easy to understand.
Prof. Alexandre Laurent
Founder of CalculStore
I've spent the past 15 years as a mathematics educator, driven by a genuine passion for mathematics, algebra, and the beauty of problem-solving. Throughout my teaching journey, I've seen how mathematics can be challenging for many people, not because it's impossible to understand, but because sometimes we lack the right tools to make it easier and more accessible.
After years of teaching, I wanted to take that passion beyond the classroom and build something with real meaning. That's how CalculStore.com came to life. I wanted to create a practical platform where students, teachers, professionals, and anyone dealing with numbers could find simple, reliable tools to solve everyday mathematical problems without unnecessary complexity.
For me, CalculStore is more than a collection of online calculators. It's a way to share my passion for mathematics, make learning and problem-solving more accessible, and turn 15 years of educational experience into something useful for people everywhere.
Why choose CalculStore?
Straight to the answer
Search by name, or type a sum like 15% of 240 right into the search box.
Private by design
Everything is calculated in your browser, and nothing you type into a calculator is sent anywhere.
Written for people
Clear labels, short explanations and a worked example, so you know what a result means.
Our values
Clarity
Plain words and results you can read at a glance.
Privacy
Entries are saved only on your device, and only if you turn on Remember.
Honesty
Results are estimates, not financial or medical advice, and we say so.
Open access
Free to use, with no account, right in your browser.
What you get
The small things that make a calculator worth coming back to.
- Free, with no sign-up
- PDF and Excel reports with your own logo
- Dollars, pounds, euros and more
- Light and dark modes
- Find any tool quickly with Ctrl K
- Save the tools you use most
Have a question, or a calculator you wish we had?
Send us a note and tell us what would help.