Math & Trig
MOD Function in Excel
Returns the remainder after a number is divided by a divisor.
Syntax
- =MOD(number, divisor)
Arguments
- number (required): The number to divide
- divisor (required): The number to divide by
Examples
- =MOD(10, 3) - Remainder of 10÷3 - Result: 1
- =MOD(ROW(), 2) - Alternating 0 and 1 for rows - Result: 0 or 1
- =IF(MOD(A1, 2)=0, "Even", "Odd") - Check if number is even or odd - Result: Even or Odd
MOD in reporting workflows
- Use absolute references when copying formulas across rows.
- For conditional totals see [SUMIF](/functions/sumif/) and [SUMIFS](/functions/sumifs/).
- Filtered lists may need [SUBTOTAL](/functions/subtotal/) instead of SUM on visible cells only.
Common errors
- #DIV/0! when divisor is 0
- Result has same sign as divisor
Use cases
- Even/odd checking
- Alternating row formatting
- Cyclic patterns
- Time calculations
Frequently asked questions
- What is MOD function used for? MOD returns the remainder after division. =MOD(10,3) returns 1 because 10÷3=3 remainder 1. Common uses: checking even/odd, creating alternating patterns, extracting time components, and cyclic calculations.
- How do I check if a number is even or odd? Use =MOD(A1, 2). Returns 0 for even numbers, 1 for odd. In conditional: =IF(MOD(A1,2)=0, "Even", "Odd"). For formatting alternate rows: use MOD(ROW(),2) in conditional formatting.
- How do I use MOD for time calculations? Convert decimal hours to hours:minutes: Hours=INT(A1), Minutes=MOD(A1,1)*60. For cyclic schedules: =MOD(WeekNumber-1, 4)+1 cycles through 1-4 repeatedly.
- What happens with negative numbers in MOD? MOD result has the same sign as the divisor. =MOD(-10,3)=2, =MOD(10,-3)=-2. This differs from some programming languages. For consistent positive results, use =MOD(MOD(n,d)+d,d).
- What is the difference between MOD and QUOTIENT? MOD returns the remainder, QUOTIENT returns the integer part of division. 10÷3: QUOTIENT=3, MOD=1. Together they satisfy: number = QUOTIENT*divisor + MOD.
Editorial review
- Reviewed by Excel.Directory Editorial Team. Updated May 2026.