A simple online calculator for everyday sums.
Tap or type your sum — 125 × 4 + 18 ÷ 3 equals 506. Multiplication and division are done before addition and subtraction.
A clean, fast calculator for everyday arithmetic: add, subtract, multiply and divide, with brackets, percentages, squares and square roots, and an Ans key to reuse the last result. Type the whole calculation or use the keypad, and the answer updates as you go.
It follows the correct order of operations and handles decimals accurately (0.1 + 0.2 shows 0.3). For percentages specifically use the Percentage Calculator; for trigonometry and logs the Scientific Calculator; for fractions the Fraction Calculator.
The calculator applies the standard method step by step.
| Item | Value |
|---|---|
| Expression | 125 * 4 + 18 / 3 |
| Result | 506 |
| Rounded to 6 decimal places | 506 |
| Scientific notation | 5.06 × 10^2 |
| With thousands separators | 506 |
| Calculation | Result |
|---|---|
| 125 × 4 + 18 ÷ 3 | 506 |
| (12 + 8) × 3 | 60 |
| 0.1 + 0.2 | 0.3 |
| 200 × 15% | 30 |
| √81 + 2² | 13 |
Tap the keys or type on your keyboard, then press = (or just read the live answer).
Yes. 2 + 3 × 4 = 14, because multiplication happens before addition.
Use the % key: 200 × 15% = 30. For more, use the Percentage Calculator.
Computers store 0.1 and 0.2 slightly inexactly; the calculator rounds away that error so you see the answer you expect.
Yes, to any depth: (12 + 8) × 3 = 60.
You get a clear message — division by zero is undefined.
It uses the standard method: order of operations: brackets → × ÷ → + − The full working and a worked example are shown on this page.
Decimal results use standard double-precision arithmetic (about 15–16 significant digits). Tools that work with whole numbers — big numbers, factors, bases, combinations — use exact integer arithmetic, so no digits are lost.
Yes for checking your work and learning the method. The steps and formula are shown so you can understand the answer, but follow your teacher's rules about calculators in exams.
No. Everything is calculated in your browser and nothing you enter is uploaded or saved.
