Will your spreadsheet work here?
Drop in the pricing model you actually use. We read every formula and tell you exactly what stays live — before you sign up for anything.
Drop your spreadsheet here
.xlsx or .xls — we check every formula in it
Checked in your browser. The file never leaves your computer.
What happens to formulas we do not support
Nothing breaks and nothing disappears. An unsupported formula imports at its last calculated value, so the number your client sees is the number Excel computed. It simply will not recalculate when other cells change, and it is flagged in the editor so you know which cells are static.
We add functions based on what real files need. Every check run on this page tells us which functions to build next — so if yours is missing, checking it here is the fastest way to get it prioritised.
Supported today
51 functions, plus arithmetic, percentages, absolute references, ranges and cross-sheet references.
- SUM
- IF
- ROUND
- AVERAGE
- COUNT
- COUNTA
- MIN
- MAX
- CONCATENATE
- TODAY
- NOW
- YEAR
- MONTH
- DAY
- DATE
- ISNUMBER
- ISBLANK
- ISTEXT
- ISERROR
- ISNULL
- AND
- OR
- NOT
- IFERROR
- IFNA
- TRIM
- UPPER
- LOWER
- LEN
- LEFT
- RIGHT
- MID
- TEXT
- VALUE
- SUBSTITUTE
- FIND
- VLOOKUP
- LOOKUP
- INDEX
- MATCH
- SUMIF
- COUNTIF
- AVERAGEIF
- ABS
- INT
- MOD
- POWER
- SQRT
- CEILING
- FLOOR
- SIGN