Waffle Chart Generator

Create grid-based waffle charts for percentage visualization with icon or square fill options.

Tested tool guide Tested browser tools Checked August 16, 2026

What Waffle Chart Generator does, with a checked example

A waffle chart is a 10-by-10 grid of 100 cells in which each cell stands for exactly one percentage point. You enter a percentage or several values that sum to 100, pick colors, and choose between plain squares and a repeating icon fill; the tool paints the grid and leaves the remainder empty. The thing users most often misjudge is precision: cells are whole points, so a value like 73.4% renders as 73 filled cells, and counting cells back out of the finished grid is harder than it looks.

Worked example

A concrete input and expected output from the current implementation.

Input

73%

Expected output

A 10-by-10 grid of 100 cells in which 73 are filled with the chosen color and 27 are left empty.

Each cell equals one percentage point, so 73% fills 73 cells and leaves 100 minus 73, or 27, cells empty; the two counts always add to 100.

How the result is produced

The 100-cell grid

The grid is 10 columns by 10 rows, so its 100 cells each stand for exactly one percentage point. A single value fills that many cells and leaves the rest empty. Several values share the same 100 cells, each allocated its percentage of the grid, so the chart stays proportional when the values sum to 100. Values round to whole cells, which is where fractional percentages go.

Square versus icon fill

The two fill modes change only the appearance of each filled cell. Square mode paints solid colored cells, the plain version of the chart. Icon mode draws the same small glyph in every filled cell, turning a block of 73 cells into a repeating pattern. The cell count is identical either way; only the visual weight differs. Icon mode suits brand-friendly charts; square mode reads better when the number matters.

Good uses

Presenting a single survey or poll result, such as feature adoption, as a share-of-100 visual instead of a pie chart.
Building a dashboard tile for one KPI, like market share or completion rate, where the grid gives a plain number a shape.
Comparing two groups side by side, for example customers who chose plan A versus plan B, so the visual gap between the two grids reads at a glance.

Limits and checks

Precision is capped at one percentage point. A value of 73.4% cannot be drawn as a partial cell, so the chart rounds, and two values that differ by less than a point can produce identical grids.
Human eyes are poor at recovering exact values from a finished waffle: 73 versus 78 filled cells is a small visual difference. Treat the grid as an approximate read and keep the numeric label nearby.
Values that do not sum to 100 leave the grid partly empty or force rescaling, and values below 1 percent round to either zero or one cell. Verify how the tool treats these cases before trusting the total.

Common questions

Why does my chart show 73 cells when I entered 73.6%?

Each cell is one whole percentage point and cannot be split. The value is converted to a whole number of cells, so 73.6% and 73.4% usually render identically as 73 cells. Whether the tool rounds or floors matters only at the boundary; if the exact value matters, the numeric label is the source of truth.

Can I show a raw count like 137 out of 500, or do I need a percentage?

Convert to a percentage first: 137 of 500 is 27.4 percent, which the grid draws as 27 filled cells. The tool is built around the 100-cell percentage convention, so it expects a percentage rather than a raw count, and the grid is only accurate to one percentage point either way.

References and verification

The example and behavioral notes were checked against the browser implementation. Standards and primary references below define the relevant format, formula, or platform behavior.