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Modulo Calculator

Free online modulo calculator tool.

About Modulo Calculator

The Modulo Calculator finds the remainder after division of one number by another. This operation (often represented by the '%' symbol in programming) is a fundamental part of modular arithmetic.

How Modulo Calculator Works

  • Step 1: Number (Dividend): Enter the number you want to divide.
  • Step 2: Divisor: Enter the number you are dividing by.
  • Step 3: Calculate: The calculator performs integer division and outputs strictly the leftover remainder.

Frequently Asked Questions

How can I tell if a number is even or odd using modulo?

By doing a modulo 2 operation (Number % 2). If the remainder is 0, the number is even. If the remainder is 1, the number is odd.

What happens if the divisor is larger than the number?

If the divisor is larger, the division cannot happen even once, so the remainder is simply the original number itself. For example, 5 modulo 10 equals 5.

Can I use modulo with negative numbers?

Yes, though the behavior can vary by programming language. This calculator uses standard Javascript modulo mechanics, where the sign of the result matches the sign of the dividend (the first number).