About the Online Calculator
This is a fast, no-frills calculator for everyday arithmetic — the digital equivalent of the desk calculator on a shop counter. It adds, subtracts, multiplies and divides, handles percentages and decimals, includes a working memory, and responds to your keyboard, all in your browser with nothing to install.
How it evaluates entries
Like a classic desk calculator, this tool works in chaining mode: it processes each operation as you enter it, left to right, rather than applying mathematical precedence. So 2 + 3 × 4 is read as (2 + 3) × 4 = 20, not 14. That behaviour is exactly what you want for quick sequential sums — a price plus a price times a quantity — but if you need parentheses and “multiplication before addition” precedence, the Scientific Calculator is the right tool.
Corrections, memory and percentages
Two clear keys keep mistakes painless: CE clears only the current entry while preserving your running total, and C resets everything. The memory keys — M+ to add, M− to subtract, MR to recall, MC to clear — let you stash a subtotal while you compute something else, then bring it back. The percent key applies the current number as a percentage of the running value, so 200 + 10% adds 20 to give 220, matching how high-street calculators behave.
Keyboard and everyday use
For anything more than a couple of taps, the keyboard is faster: the number row, the operator keys, Enter for equals and Backspace for corrections all work. This calculator is built for speed and simplicity — splitting a bill, totting up a shopping list, checking change. For statistics use the Mean, Median and Mode Calculator, and for scientific functions the Scientific Calculator. Everything is computed privately in your browser.
Worked example
A shopping total: 3 items at ₹249, plus one at ₹1,100, less a ₹150 voucher.
Press 249 × 3 = → 747. Then + 1100 = → 1847, and − 150 = → ₹1,697. Add 18% GST with the percent key: + 18 % → it adds 305.46 to give ₹2,002.46.
Watch the chaining behaviour, though: typing the whole thing as 249 × 3 + 1100 − 150 works here because the multiplication comes first anyway. Type it as 1100 + 249 × 3 and this calculator returns 4,047 — it computes (1100 + 249) × 3 — whereas a scientific calculator returns 1,847. When precedence matters, use the Scientific Calculator or press = to close each step.
Frequently Asked Questions
Does this calculator follow the order of operations?
No — like a traditional desk calculator it evaluates entries left to right as you press them, so 2 + 3 × 4 gives 20, not 14. For full mathematical precedence (parentheses and exponents first), use the Scientific Calculator instead.
How do I correct a mistake?
Use CE (Clear Entry) to clear just the current number without losing the running total, and C (Clear) to reset everything. Backspace removes the last digit you typed.
How do the memory keys work?
M+ adds the shown number to memory, M− subtracts it, MR recalls the stored value, and MC clears memory. They are handy for keeping a subtotal aside while you work out another figure.
Can I use my keyboard instead of clicking?
Yes — number keys, the operator keys (+ − * /), Enter for equals and Backspace for corrections all work, which is much faster than clicking for longer sums.
What does the percent (%) key do?
It converts the current entry into a percentage of the running value — for example 200 + 10% adds 10% of 200 (that is, 20) to give 220, the way a standard calculator handles percentages.
How are decimals handled?
You can enter decimal points freely; results display with standard rounding. For very long results some trailing digits may be rounded for the display.
Is anything I type sent anywhere?
No. The calculator runs entirely in your browser, so your numbers never leave your device.