Line Chart Maker
Watch how values change over time. Free, no sign-up — your data stays in your browser.
What a Line Graph Maker Does
A line graph maker connects a series of values in order and shows you the shape they make: rising, falling, flattening, or swinging back and forth. Where a bar chart compares separate things, a line graph shows one thing changing.
That makes it the right tool whenever the x-axis is time — months of revenue, years of population, weeks of signups, daily temperature. The line itself carries the meaning: its direction is the trend, and its steepness is how fast things changed.
ChartFrame is a free line graph maker that runs entirely in your browser. No account, no upload, no watermark, and no limit on how many charts you make.
How to Make a Line Graph
The chart on this page is live. Change a number and watch the line move — the numbers you type are the points, in the order you type them.
Enter your points in order
Type a label and a value for each point — months, quarters, years, or any sequence. The line is drawn in the order you enter, so the order is the story.
Adjust the chart
Show the values next to each point, switch to a dark theme, or paste in a new set of numbers to see a different trend instantly.
Download it
Export a high-resolution PNG or a vector SVG for a report, or copy the chart straight to your clipboard.
Line Graph, Bar Chart or Pie Chart?
The three charts answer three different questions, and picking the wrong one is the most common reason a chart feels hard to read.
Use a line graph when the x-axis is time and you care about the shape of the change — growth, decline, seasonality. Use a bar chart when you are comparing separate categories at one moment. Use a pie chart when the categories are parts of a single whole and you care about their share.
A useful edge case: if you have only two or three time points, a bar chart is often clearer than a line — a line between two points is just a straight segment, while bars show each value honestly. Lines start earning their keep at four or more points.
Why Use ChartFrame
Most free chart makers put a sign-up wall in front of the download or stamp a logo on the result. This one is deliberately plain: your numbers on the left, the chart on the right, the export buttons directly underneath.
The line is drawn at 2px with rounded joins, and each data point carries a thin ring in the background colour so points stay legible where the line doubles back on itself. The y-axis rounds to clean numbers — 0, 1K, 2K, never 873.2 — and the axis always starts at zero, so the shape of the trend is never exaggerated.
Because the chart is vector-drawn, the SVG export stays sharp at any size and PNG renders at up to four times the base resolution. Turn on a transparent background and it drops cleanly onto an existing slide.
Frequently asked questions
Is this line graph maker free?
Yes. Every feature, including high-resolution PNG and SVG export, is free with no sign-up, no watermark, and no limit on how many charts you make.
What's the difference between a line graph and a line chart?
Nothing — the two terms are interchangeable. "Line graph" is more common in schools and textbooks, "line chart" in business writing. Both mean the same picture.
Can I make a line graph from Excel data?
Yes. Copy two columns — labels and values, in the order you want them plotted — click "Paste from Excel", and paste. Thousand separators and percent signs are handled automatically.
Can I put dates or months on the x-axis?
Yes. Type anything as the label — Jan, Q1, 2019, Week 12 — and it is printed under its point. The points are spaced evenly, so your labels define the order.
When should I use a line graph instead of a bar chart?
Use a line graph when the x-axis is time and you care about the trend — the direction and shape of change. Use a bar chart when you are comparing separate categories, or when you have only two or three time points.
Should a line graph start at zero?
Not always — but starting at zero is the safe default, and it is what this tool does. A truncated axis can make a small change look dramatic, which is fine when the point is a real trend and misleading when it is noise.
How many points does a line graph need?
Four or more is where a line starts to earn its place — with two points it is just a straight segment, and a bar chart would be clearer. There is no hard upper limit, though past about twenty points the labels start competing for space.
Can I plot more than one line?
Not yet — this version plots one series at a time, which covers most everyday charts. If you need to compare two trends, chart them side by side; multiple lines are on our roadmap.
Do you support decimal values?
Yes. Enter 3.5 or 0.25 and the axis adjusts its own precision — a small-scale chart gets ticks like 0.05, 0.10, 0.15 rather than rounding your data away.
Can I use the chart in a report or slide deck?
Yes. Download a PNG at 2× or 4× for slides, use SVG for print, or turn on a transparent background so the chart sits over an existing layout. The Copy button puts a high-resolution PNG straight onto your clipboard.
Is my data uploaded to a server?
No. The chart is generated entirely in your browser, so your numbers never leave your device — which matters when the data is unpublished.