How to Describe a Chart in IELTS Writing Task 1

What IELTS Writing Task 1 actually asks for

In the Academic module, Task 1 presents a chart, graph, table, or diagram and asks you to summarise the information in your own words. You are given about 20 minutes and should write at least 150 words.

The examiner is not checking whether you understand the subject matter. They are checking whether you can identify the most important trends or features and express them clearly and accurately in English.

This means Task 1 is less about the data itself and more about your ability to organise, select, and compare information under time pressure.

• Minimum 150 words, roughly 20 minutes
• One of: line graph, bar chart, pie chart, table, process, or map
• Marked on task achievement, coherence, vocabulary, and grammar

Selecting key features instead of listing everything

A common mistake is trying to mention every single figure on the chart. This usually produces a cluttered report that misses the bigger picture and runs out of time before it is finished.

Instead, scan the chart for two or three features that stand out: the highest and lowest points, a clear trend over time, a notable gap between categories, or an unusual change. These become the backbone of your report.

Smaller details can still appear, but only to support the main points you have chosen, not as a separate list.

Selecting features

Rather than describing all six years of data individually, focus on: the overall upward trend, the year with the sharpest rise, and the category that remained flat throughout.

Writing a clear overview paragraph

Every strong Task 1 response includes a short overview, usually placed right after the introduction, that states the main trends in general terms without specific numbers.

The overview is one of the features examiners look for when assessing task achievement, and its absence is one of the most common reasons responses are marked down even when the data description itself is accurate.

• State two or three general trends, not individual figures
• Keep it to one or two sentences
• Avoid repeating the exact wording of the question

Useful language for comparing and contrasting data

Task 1 relies heavily on comparative and descriptive language: words that show how figures rise, fall, or stay the same, and phrases that compare one category against another.

Varying this language naturally, rather than repeating the same verb or adjective throughout, is one of the clearest ways to improve your lexical resource score.

• Trends: rose steadily, fluctuated, remained stable, declined sharply
• Comparisons: in contrast, whereas, compared with, more than double
• Approximation: just over, slightly below, roughly a third

A practical way to practise Task 1

Reading about structure helps, but Task 1 skills are built through repeated, timed practice followed by honest feedback. Try describing a chart in 20 minutes, then review what you wrote against the criteria above.

A teacher or Task 1-specific service can identify missing overviews, repeated vocabulary, or grammar errors. English Grader currently provides AI writing feedback for Task 2 rather than Task 1.

Over several practice sessions, track whether your overview is improving and whether your comparisons are becoming more varied and precise.