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Use this free printable graph paper generator to create ternary graph paper for phase diagrams and three-component analysis. Choose your preferred grid style and download a ready-to-print PDF in A4 or US Letter format.
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This ternary graph paper in A2 format is ideal for phase diagrams and three-component analysis. For example: A materials scientist maps alloy composition on ternary graph paper, reading the percentage of each of three metals from the triangular coordinate grid.
Read the full guide to ternary graph paper → · All paper sizes and dimensions →
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The same ternary grid is also available in: A4 Ternary · A5 Ternary · US Letter Ternary · 11x17 Ternary · Legal Ternary · A3 Ternary · Poster Ternary · Movie Poster Ternary.
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Not sure ternary is right? Browse all ternary graph paper options or read the full graph paper guide.
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FAQ
Ternary graph paper is used for plotting three-component systems where the components must sum to 100% (or 1.0). Common applications: phase diagrams in chemistry and metallurgy, soil composition (sand/silt/clay), mixture design in chemical engineering, alloy composition, and three-way population studies in biology.
Each side of the triangle represents one of the three components (A, B, C). A point inside the triangle represents a mixture where the perpendicular distances to each side give the percentages. Vertices are pure components: top vertex = 100% A, lower-left = 100% B, lower-right = 100% C.
Not directly — ternary paper is mathematically restricted to three components summing to 100%. Four-component (quaternary) systems require tetrahedral diagrams (3D) or restricted ternary plots where one component is held constant.
About
Ternary graph paper uses a triangular coordinate system to plot three-component data. Each corner of the triangle represents 100% of one component, and any point inside represents a specific mixture of all three. It is essential for phase diagrams, mixture analysis, and composition studies in chemistry and materials science.
Ternary graph paper is an equilateral triangular grid where every point represents three components summing to 100 percent, used for phase diagrams, soil texture, and alloy composition.
| Sheet size | 420 × 594 mm (16.54 × 23.39 in) |
|---|---|
| Points / pixels | 1190.6 × 1683.8 pt · 4961 × 7016 px at 300 DPI |
| Standard | ISO 216 |
| Default spacing | 10 mm (adjustable 2–25 mm, or 1/16–2 in) |
| Grid at default | 40 × 57 squares (2,280) inside a 10 mm margin |
| Output | Vector PDF generated in your browser — free, no signup, no watermark |
Last reviewed and updated by graphpdf.com. Figures on this page follow ISO 216 and ANSI/ASME Y14.1 sheet dimensions. View as Markdown.
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