Modulo Calculator (Remainder)
Math Toolsa mod b, quotient and remainder
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History
All history →Modulo Calculator (Remainder) — at a glance
Get the remainder of a division instantly.
17 mod 5
Calculate Modulo
2
How to use it — step by step
The dividend (a) and the divisor (b).
1
Enter your values
Fill in the fields. Default numbers are shown so you can see how it works.
2
Press Calculate Modulo
The answer appears at once as large result cards.
3
Copy or share
Copy the result, or share a link that opens with your numbers filled in.
Pro tips
Small things that make the result better.
✦Math modulo is never negative for a positive divisor.
✦Programming % can return negative values.
✦Used for clocks, cycles and checksums.
Quick facts
Freeno signup
Privateruns in your browser
Instantresult in a second
No limituse it as often as you like
Frequently Asked Questions
What is modulo?+
The remainder after dividing a by b.
Why do two answers appear?+
Languages differ for negative numbers. Both the truncated and the floored result are shown.
Is my data safe?+
Yes. Everything runs inside your own browser. Your text, files and images are never uploaded to any server.
Is this tool really free?+
Yes — completely free, no signup, no watermark and no usage limit.
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