In short: Describe a pie chart by reporting proportions, not a robotic list of percentages. Write an introduction, a figure-free overview naming the largest and smallest slices, then body paragraphs that group the segments using proportion language (a third, the majority, a small fraction). With two pie charts, focus on what changed.
A pie chart in IELTS Academic Writing Task 1 asks you to describe proportions — what share of a whole each category takes. The examiner is testing whether you can describe shares accurately without falling into a robotic "X is Y%, Z is W%" list. This guide gives you a reliable method and the exact proportion language to use.
What the examiner wants
The four Task 1 marking criteria each reward a particular skill on a pie chart:
- Task Achievement — an overview that names the largest and smallest slices, plus accurate figures for the most important categories.
- Coherence & Cohesion — group similar-sized slices together rather than describing each in turn. Lead with the biggest, end with the smallest (or vice versa).
- Lexical Resource — varied proportion language: fractions, percentages, "share of", "accounted for", and quantifiers like "the majority".
- Grammatical Range — paraphrased equivalents (e.g. "a quarter of" / "25% of" / "one in four") and clauses that compare two slices in one sentence.
If you face two pie charts comparing the same categories at different times, the test also becomes about change — which slices grew, which shrank, and which stayed flat.
A reliable method
- Read the title and category labels. Note what the whole represents (the total population? all respondents? total spending?) and what each slice stands for.
- Find the biggest and smallest slices. These almost always appear in your overview.
- Group slices by size. Two or three large slices first, the rest in a second group.
- Write the introduction by paraphrasing the prompt — don't copy it.
- Write a two-sentence overview stating which slice dominates and which is smallest. No figures here.
- Write the detail paragraphs, grouping slices by size and quoting only the key figures. If you have two pie charts, devote a paragraph to the changes between them.
The language that scores
Vary the way you describe shares:
- Percentages and fractions: 25% / a quarter; 33% / one third / a third; 50% / half; 75% / three-quarters; 10% / one in ten
- Magnitude language: the majority of, a significant proportion of, a substantial share, a small share, a tiny minority, just over half, nearly a third
- Verbs of share: accounted for, made up, represented, comprised
- Comparisons between slices: twice as large as, by far the largest, a similar share to, marginally smaller than
- Change language (for two pie charts): rose / fell / remained stable; doubled; halved; overtook
A useful pattern is "X accounted for Y%, making it Z":
Housing accounted for around 30% of total spending, making it the largest single category.
Or, with a fraction paraphrase:
Just under a third of respondents — about 30% — said housing was their biggest monthly expense.
A worked sample answer
Prompt: The pie chart below shows the categories of weekly household spending in a typical UK household in 2020.
The pie chart shows how a typical UK household divided its weekly spending across six categories in 2020.
Overall, housing was by far the largest single expense, accounting for nearly a third of the total, while leisure made up the smallest share. Food and transport between them took up another large portion of the budget.
Housing alone made up around 30% of weekly spending — almost twice the share of food, which came second at roughly 16%. Transport followed at about 12%, with utilities a little behind at 10%.
The remaining categories were much smaller. Clothing and household goods each accounted for around 7%, while leisure was the smallest at just 5%, less than a sixth of the housing share.
This answer leads with a figure-free overview, groups the slices by size (the dominant slice, then the middle group, then the small ones), and uses fractions and percentages interchangeably to vary the language.
Common mistakes to avoid
- Listing every slice in chart order. Group by size, not by where each slice happens to sit on the chart.
- No overview, or an overview stuffed with numbers (overview = no figures).
- Repeating "X is Y%" in every sentence. Mix percentages, fractions, and "accounted for" / "made up".
- Forgetting the total. Anchor your language in what the whole represents (households, respondents, spending).
Frequently asked questions
How do I describe a pie chart without just listing percentages? Use proportion language (a quarter, roughly a third, the majority), group similar slices, and quote only the key figures.
Do I compare two pie charts or describe them separately? Compare them. The marks are in what changed between the two periods, not in describing each chart in isolation.
What goes in a pie-chart overview? The largest and smallest segments, or the main change between two charts — with no specific figures.
What tense should I use? Past simple for a past year; present perfect or future forms if the periods reach the present or future.
Practise this
You now have the method. The fastest way to make it automatic is to write under guidance and get feedback on the exact proportion language. This lesson drills pie-chart proportions step by step: