How to calculate a division remainder
Enter dividend and divisor. The tool shows quotient and remainder in the form a = b × q + r. That is the modulo operator used in programming and school arithmetic.
Ontoom
Division remainder
Dividend ÷ divisor: quotient and remainder.
Quotient
3
Remainder
2
Expression
17 = 5 × 3 + 2
Important: Local, instant calculation.
Frequently asked questions
- Are remainder and modulo the same?
- For positive integers, yes: a % b is the remainder of a divided by b.
- Can the divisor be zero?
- No. Division by zero is invalid — the page warns you.
- Are decimals allowed?
- Yes. Use a period or a comma as the decimal separator.
- Is the calculation local?
- Yes. Nothing leaves the browser.