Calculate the remainder of division (a mod b). Shows quotient, remainder, full division expression, and negative dividend semantics. Everything runs locally in your browser — nothing is uploaded.
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Calculate the Compound Annual Growth Rate (CAGR) for investments. Shows year-by-year growth breakdown. Everything runs locally in your browser — nothing is uploaded.
Modulo Calculator lets you calculate the remainder of division (a mod b). Shows quotient, remainder, full division expression, and negative dividend semantics. Everything runs locally in your browser — nothing is uploaded.. It works on any device with a modern web browser.
Calculate the remainder of division (a mod b). Shows quotient, remainder, full division expression, and negative dividend semantics. Everything runs locally in your browser — nothing is uploaded. It runs entirely in your browser — no software installation or data uploads required.
Enter numeric values in the input fields — amounts, rates, or percentages.
Yes. After the initial page load, Modulo Calculator runs entirely on your device with no internet connection needed. All processing is done locally.
Modulo (mod) returns the remainder after division. For example, 17 mod 5 = 2 because 17 = 5 × 3 + 2. It's used in cryptography, hash functions, clock arithmetic, and array indexing.
JavaScript's % truncates the quotient toward zero, so -7 % 3 = -1. Python floors toward negative infinity, so -7 % 3 = 2. Both are valid — they just define 'remainder' differently. This tool shows both results when they differ.
It shows the complete division expression: dividend ÷ divisor = decimal, the integer quotient, and the remainder calculation (dividend − divisor × quotient = remainder). This helps verify the result step by step.
Common uses: checking if a number is even/odd (n % 2), cycling through array indices (i % length), implementing hash tables, clock arithmetic (hours % 12), and modular exponentiation in cryptography.
Greatest Common Factor Calculator
Calculate the GCF/GCD of two or more numbers. Shows the prime factorization method step by step. Everything runs locally in your browser — nothing is uploaded.
Rounding Calculator
Round numbers using 5 modes: round half up, banker's rounding, floor, ceil, and truncate. Shows step-by-step explanation with the digit being rounded. Everything runs locally in your browser — nothing is uploaded.