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How to sum every other row in Excel and Google Sheets
Topic:SUM & aggregationExcel & Google Sheets
=SUMPRODUCT((MOD(ROW(B2:B7),2)=0)*B2:B7)Try it with your data
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Step by step
- 1Identify the range to sum, e.g. B2:B7 (six data rows after a header in row 1).
- 2Enter =SUMPRODUCT((MOD(ROW(B2:B7),2)=0)*B2:B7). MOD(ROW(...),2) returns 0 for even row numbers and 1 for odd; the =0 comparison picks even rows.
- 3To sum odd rows instead, change =0 to =1: =SUMPRODUCT((MOD(ROW(B2:B7),2)=1)*B2:B7).
Tips
- ROW() returns the spreadsheet row number, not the position within the range, so verify whether your data starts on an even or odd row to pick the right modulus condition.
- If your data starts in row 2, even spreadsheet rows (2, 4, 6…) are the first, third, fifth data rows — double-check the parity you need.
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Frequently asked
How do I sum every other row starting from the second data row?
Adjust the modulus condition: if row 2 is your first data row and you want rows 3, 5, 7… use MOD(ROW(B2:B7)-1,2)=0.
Does this formula update automatically when data changes?
Yes — SUMPRODUCT recalculates whenever any cell in the referenced range changes.
More on SUM & aggregation
See all →Reference
SUMPRODUCT
Multiply ranges together row by row and sum the result — ideal for weighted totals.
How-toHow to sum a column
Add up an entire column with SUM. Total a whole column or a fixed range — identical in Excel and Google Sheets.
Error fixFix 0
SUM returns 0 or the wrong total in Excel and Google Sheets — fix numbers stored as text, filtered ranges, manual calculation mode, and circular references.
ReferenceSUBTOTAL
Aggregate a range (sum, average, count…) while ignoring other SUBTOTALs and, optionally, hidden rows. Ideal under filters.
How-toHow to create a running total
Build a cumulative running total with a SUM and a clever anchored reference that grows as you copy it down. Works in both apps.
How-toHow to sum values by month
Total amounts that fall in a given month with SUMIFS and two date bounds. Works the same in Excel and Google Sheets.