Excel Functions

Why COUNTIF Returns 0 Even When Values Exist

nxlog / May 27, 2026

COUNTIF often returns 0 even when matches look obvious. Learn the three real causes and how to fix COUNTIF reliably in office Excel files.

nxlog / May 7, 2026

Learn how to use TEXTJOIN to merge many cells into a single line, ignore blanks, and avoid messy separators in real Excel reporting workflows.

nxlog / May 5, 2026

Copying formulas in Excel often leads to wrong results. Learn why relative and absolute references cause this and how to fix it properly.

nxlog / April 28, 2026

SUMIFS handles AND logic by default. Learn why OR conditions fail and how to calculate them correctly without breaking Excel reports.

nxlog / April 24, 2026

Most office Excel files rely on the same small set of functions. Learn why these functions matter and how they solve real reporting problems.

nxlog / April 23, 2026

DATEDIF and EOMONTH are common Excel date functions, but misuse causes wrong results. Learn how to calculate dates reliably in real reports.

nxlog / April 21, 2026

FILTER creates live, condition‑based tables in Excel. Learn how to replace manual filters with automatic data extraction that stays accurate.

nxlog / April 21, 2026

UNIQUE and SORT replace fragile copy‑paste lists. Learn how to build dynamic, self‑updating Excel reports that don’t break as data grows.

nxlog / April 13, 2026

TEXT makes dates and numbers look right but breaks calculations. Learn why it happens and how to format values safely in real Excel reports.

nxlog / April 10, 2026

SUMIFS works for small reports but breaks as data grows. Learn when to switch to Pivot Tables and avoid slow, fragile Excel workbooks.