Line Graph Maker
Paste categories and values to build a line graph instantly — single or multi-series, with axis labels, live stats, and PNG/SVG export. Free, no signup, and your data never leaves your browser.
Try an example data set
Renders locally in your browser — your data is never uploaded.
Statistics of your data
Points (n)
12
Y minimum
12
Y maximum
31
Y mean
21.5833
Data table
| Series | X | Y |
|---|---|---|
| Series 1 | Jan | 12 |
| Series 1 | Feb | 19 |
| Series 1 | Mar | 15 |
| Series 1 | Apr | 22 |
| Series 1 | May | 28 |
| Series 1 | Jun | 25 |
| Series 1 | Jul | 31 |
| Series 1 | Aug | 29 |
| Series 1 | Sep | 24 |
| Series 1 | Oct | 20 |
| Series 1 | Nov | 16 |
| Series 1 | Dec | 18 |
- 01Make a line graph online in seconds — paste data, the chart updates live.
- 02Single series or multi-line charts from columns or a second data box.
- 03Customize title, axis labels, and series color.
- 04See point count, y min, y max, and mean at a glance.
- 05Download as PNG or SVG, or share a link that rebuilds your chart — free, no signup.
Why Use This Line Graph Maker
Instant Live Chart
The line graph redraws as you type — no upload step, no waiting. Paste values from Excel, Google Sheets, or a CSV and the trend line appears immediately.
Single or Multi-Series
Plot one series as label/value rows, or compare multiple series with a header row (x, Series A, Series B) or an optional second data box for a paired series.
Stats Included
Every chart comes with point count, y minimum, y maximum, and mean — plus a crawlable data table that mirrors what the graph shows.
Flexible Input Formats
Bare numbers become an indexed x-axis; label,value rows work for monthly or categorical x; multi-column paste from spreadsheets becomes a multi-line chart.
Export and Share
Download a publication-ready chart: a crisp 2× PNG for slides and homework, or a scalable SVG you can edit in any vector tool. Copy the image to the clipboard, or share a link that rebuilds the exact chart — data and settings included.
Free and Private
Everything runs in your browser — your data is never uploaded to a server. No signup, no limits, no paywall. Just make a line graph and go.
What Is a Line Graph?
A line graph (or line chart) plots values as points connected by straight line segments. The x-axis usually represents an ordered category or time sequence (months, weeks, steps), and the y-axis shows the measured quantity. Line charts excel at showing change over time, trends, peaks, and troughs — and at comparing several series on the same scale.
Whether you are graphing homework data, monthly metrics, or multi-product trends, a clear line chart is often the fastest way to show how values move — and this free line graph maker gives you the chart, the table, and the key y-stats in one place.
- Line Graph vs Bar Chart
- A line graph emphasizes continuous change and order along the x-axis; a bar chart emphasizes discrete comparisons between categories. Use a line when sequence and trend matter; use bars when you mainly compare standalone groups.
- Line Graph vs Area Chart
- An area chart fills the region under the line, which can highlight volume or cumulative feel. A plain line keeps the focus on the path of the values without implying a filled magnitude — better when you compare multiple series without stacking.
- Multi-Series Lines
- Plotting two or more series on the same axes makes it easy to compare products, regions, or metrics over the same labels. Keep series count modest so colors and legends stay readable.
- When to Use a Line Chart
- Time series (sales, temperature, prices), ordered steps (weeks of an experiment), or any ordered x with continuous y. Avoid line charts for unordered categories where connecting points implies a false sequence.
How to Make a Line Graph Online
- 01
Paste your data
Enter label, value pairs (one per line), a list of bare numbers, or a multi-column block with a header row for several series. Copying from Excel or Google Sheets works.
- 02
Add a second series (optional)
Use the second data box for another series with the same x labels, or paste multi-column data with named series in the first box.
- 03
Label your chart
Set the title and x/y axis labels so the graph is self-explanatory. Pick a line color for the primary series.
- 04
Download and share
Export as PNG or SVG, copy the image, or share a link that rebuilds your exact chart. Review the stats strip and data table under the graph.
Tips for Better Line Graphs
Keep X Ordered
Line charts imply sequence. Sort time and ordered categories correctly so the line does not zig-zag across unrelated labels.
Start Y at Zero When Fair
When all values are non-negative, this tool includes zero on the y-axis so slopes are not exaggerated. For temperature or other ranges that do not include zero, a tight range can still be appropriate.
Limit the Number of Series
Two to four series stay readable; more often needs small multiples or a different design. Use clear series names in the multi-column header.
Label Units on the Axes
Write "Sales (units)" or "Temperature (°C)" on the y-axis so the chart stands alone in a report or slide.
Use Enough Points for Trends
Two points always make a line — but a trend needs more. For noisy data, more points (or aggregation) make patterns clearer.
Prefer Lines for Trends, Bars for Ranks
If the story is "which category is largest," a bar chart may be clearer. If the story is "how it changed," use a line graph.
Line Graph Concepts
Definition of a line graph
A line graph plots ordered observations as markers connected by line segments. The shape of the polyline communicates rise, fall, volatility, and relative levels across series.
What a line chart tells you
- Trend: overall upward, downward, or flat movement.
- Seasonality or cycles: repeating peaks and troughs.
- Anomalies: sudden spikes or drops relative to neighbors.
- Comparison: which series leads or diverges over the same x labels.
Choosing scales honestly
Including zero when values are non-negative avoids overstating small changes. For data that never approaches zero (e.g. body temperature), a range focused near the data can be more honest — always label axes clearly.
Useful Summaries
Mean of y-values
ȳ = (Σ yᵢ) ÷ n
Values 12, 19, 15 → ȳ = 46 ÷ 3 ≈ 15.33.
Range
range = max(y) − min(y)
min 12, max 31 → range 19.
Simple percent change
%Δ = ((y_last − y_first) ÷ y_first) × 100%
Jan 12 → Dec 18 → +50%.
Slope between two points
m = (y₂ − y₁) ÷ (x₂ − x₁) when x is numeric
With categorical x, compare successive differences Δy instead.
Line Graph Maker FAQ
Q01How do I make a multi-line chart?
Paste a header row such as "Month, Series A, Series B" followed by data rows, or enter the first series in the main box and the second series in the optional second data box with matching x labels. Each series is drawn with its own color and a legend.
Q02Can I paste data from Excel or Google Sheets?
Yes. Copy a column pair or multi-column range and paste it into the data box — commas, tabs, and new lines are all understood. Multi-column selections with a header row become multi-series line charts.
Q03Is this line graph maker free?
Yes. It is completely free with no signup and no limits. The chart runs entirely in your browser, so your data is never uploaded to a server.
Q04How do I export or share the line chart?
Click PNG for a high-resolution image (rendered at 2×) or SVG for a scalable vector file. You can also copy the PNG to the clipboard or use Share link to copy a URL that rebuilds your chart from the link fragment — nothing is stored on our servers.
Q05What is the difference between a line graph and an area chart?
Both show values over an ordered x-axis. An area chart fills under the line, which stresses magnitude or stacked totals; a line graph shows only the path of the values, which is usually clearer when comparing several series without stacking.
Q06When should I use a line graph vs a bar chart?
Use a line graph for trends and change over time (or any ordered sequence). Use a bar chart to compare discrete categories where the order of bars is less important than their heights. Connecting unordered categories with a line can be misleading.
Q07What input formats are supported?
Bare numbers (x becomes 1, 2, 3…), label/value rows like "Jan, 12", multi-column headers with one or more series, and an optional second series textarea. Decimals and negative y values are supported.
Q08Is my data private?
Yes. Parsing, charting, and export all happen in your browser. Shared links encode data in the URL fragment, which is not sent to our servers when you open the page.