4 Core Operations
Addition, subtraction, multiplication, and division — all with precise floating-point handling and real-time result preview.
4-Function Calculator
4 Function
0
Features
Why Choose 4-Function Calculator?
More than just a calculator — it's an experience.
Memory Functions
Store, recall, add to, and subtract from memory. A persistent M indicator shows when memory is active.
Calculation History
Every calculation is saved. Tap any past result to instantly load it back into the calculator.
Full Keyboard Support
Use your keyboard for lightning-fast calculations. Number keys, operators, Enter, Backspace — all mapped.
Premium Design
Glassmorphism aesthetics, smooth animations, ripple effects, and animated background orbs create a visually stunning experience.
Fully Responsive
Pixel-perfect on every screen — phones, tablets, laptops, and ultra-wide monitors. No scrolling required.
How to Use
Get Started in Seconds
Using 4-Function Calculator is as simple as 1-2-3 (literally).
01
Enter a Number
Click the number buttons or simply type on your keyboard. The display updates in real time.
02
Choose an Operation
Tap +, −, ×, or ÷. The active operator lights up so you always know what's selected.
03
Get Instant Results
Press = or hit Enter. Your result appears instantly and is saved to history for later reference.
FAQ
Frequently Asked Questions
Everything you need to know about 4-Function Calculator.
What is a 4 function calculator?
A 4 function calculator performs the four basic arithmetic operations: addition (+), subtraction (−), multiplication (×), and division (÷). This calculator extends this with memory, percentage, square root, square, and a full calculation history.
Is 4-Function Calculator really free?
Yes, 4-Function Calculator is 100% free to use — no sign-up, no ads, and no downloads required. It works directly in your web browser on any device.
Does 4-Function Calculator support keyboard shortcuts?
Absolutely! 4-Function Calculator supports full keyboard input:
- 0–9 — Number keys
- + − * / — Operators
- Enter or = — Calculate result
- Backspace — Delete last digit
- Delete or Escape — Clear all
- % — Percentage
Can I use 4-Function Calculator on my phone or tablet?
Yes! 4-Function Calculator is fully responsive and adapts beautifully to any screen size — from small phones to ultra-wide desktop monitors. The buttons are large and touch-friendly on mobile devices.
How does the memory function work?
4-Function Calculator has four memory buttons:
- M+ — Adds the current number to memory
- M− — Subtracts the current number from memory
- MR — Recalls the stored memory value
- MC — Clears the memory
An "M" indicator appears on screen whenever memory contains a non-zero value.
Is my calculation data stored or shared?
No. All calculations happen entirely in your browser. Nothing is sent to any server. Your data stays private and local to your device.
Ready to Calculate?
Jump back to the calculator and crunch some numbers — it's free, fast, and beautiful.
Open Calculator