Calculators
Modulo Calculator
Calculate the remainder and quotient of two whole numbers locally in your browser.
Enter a whole-number dividend and a non-zero whole-number divisor. For example, 17 mod 5 is 2 with quotient 3. The remainder uses truncated division, so its sign follows the dividend. Calculations run locally in your browser; your values are not uploaded or stored.
Find a remainder without uploading anything.
Enter a whole-number dividend and a non-zero whole-number divisor to see the remainder and quotient. Everything runs locally in your browser, so your values are not uploaded or stored.
Frequently Asked Questions
Everything you need to know about this tool, how it works, and privacy.
What is modulo?
Modulo finds the remainder after division. For example, 17 mod 5 is 2 because 5 goes into 17 three times with 2 left over: 17 = (5 x 3) + 2.
What does the modulo calculator show?
Enter a whole-number dividend and a non-zero whole-number divisor. The calculator returns the remainder and the truncated quotient. For example, 17 mod 5 gives remainder 2 with quotient 3.
Which inputs are accepted?
Enter whole numbers within the safe integer range. The dividend can be negative or zero, and the divisor can be positive or negative but cannot be zero. The remainder uses truncated division, so its sign follows the dividend.
Do my numbers stay private?
Yes. The calculation and copy action run locally in your browser. CodeASystem does not upload or store the values you enter.