BeginnerLogical Functions
Replace #DIV/0! with a dash using IFERROR
Keep a report readable when a division has nothing to divide by.
IFERROR
5 min15 points
IFERROR practice exercises
Returns a value you choose when a formula errors, and the formula's result otherwise. Below is 1 interactive exercise that puts it to work on realistic business data — you write the formula, and get told exactly what went wrong when it does not work.
Syntax
IFERROR(value, value_if_error)
Need a refresher? Learn IFERROR — syntax, a worked example and where it goes wrong.
Practise IFERROR
Ordered from most approachable to hardest.
When IFERROR is the right tool
Returns a value you choose when a formula errors, and the formula's result otherwise. It belongs to the logical functions family, and it shows up constantly in real work — which is why it is worth being genuinely fluent rather than merely familiar.
Before this one, it helps to be comfortable with IF. The exercises below assume that ground is covered.
Reading about a function is not the same as being able to write it. The exercises on this page exist because the gap between recognising IFERROR and producing it from memory, correctly, on data you have not seen before, only closes by doing it.
Related functions
Questions about IFERROR
How do I practise IFERROR without Excel installed?
Every exercise on this page runs in your browser. You type the IFERROR formula into a real spreadsheet grid and get told immediately whether it works — no download, no account.
What does IFERROR do?
Returns a value you choose when a formula errors, and the formula's result otherwise. The syntax is IFERROR(value, value_if_error). The exercises below put it to work on realistic business data rather than abstract examples.
How long does it take to learn IFERROR?
Most people can write a working IFERROR formula within twenty minutes of practice. Getting it right under pressure — with edge cases, unsorted data and ranges that must survive being filled down — is what the harder exercises here are for.