Free printable graph paper & statistics tools

Coordinate planes, isometric, and log-log graph paper — plus calculators for standard deviation, correlation, confidence intervals, and more. Adjustable, accurate, and printed at true scale.

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Print at true scale — no "fit to page" guesswork
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Every calculator shows its formula and steps

Graph paper

Printable Coordinate Plane & Four-Quadrant Graph Paper

Free printable coordinate plane PDFs — four-quadrant or single-quadrant, labeled axes, adjustable grid size. Download or print at true scale.

Isometric Graph Paper (Printable PDF)

Free printable isometric graph paper — true 30° triangular grid for 3D sketching and technical drawing. Adjustable spacing, print at exact scale.

Log-Log Graph Paper (Printable PDF)

Free printable log-log graph paper — logarithmic scale on both axes, adjustable decades. Ideal for power-law plots. Print at true scale.

Statistics calculators

Standard deviation calculator

Paste data → mean, median, mode, variance & standard deviation (population and sample), quartiles, and outliers, with the SD steps shown.

Box & whisker plot maker

Paste data → five-number summary, quartiles, and outliers. Download PNG, SVG, PDF, or CSV.

Scatter plot maker

Paste x, y data → scatter with a line of best fit, the equation, R², and r. Download PNG, SVG, PDF, or CSV.

Correlation coefficient calculator

Paste x, y data → Pearson r or Spearman rank correlation, R², and a plain-English strength, with every step shown.

Sample size calculator

Find the minimum survey sample size for a proportion or a mean, with the finite-population correction and every formula step shown.

Confidence interval calculator

Build a confidence interval for a mean (z or t, chosen automatically) or a proportion, with the standard error and every step shown.

Z-score calculator

Convert a score to a z-score and percentile, or look up a bare z-score — works as a z-table replacement too.

Percentile calculator

Find what percentile a score falls at, or the score at a given percentile, for a normal distribution.

Bell curve generator

Enter a mean and standard deviation → a normal curve with any region shaded, plus the probability and z-score. PNG, SVG, PDF, CSV.

Grade curve calculator

Paste scores → curve by flat bump, top-score-to-100, target average, or bell curve. Before/after table + CSV export.

Free No paywalls, no subscription.

Accurate True-scale PDFs and formula-checked math.

Printable Every tool exports a clean PDF, PNG, or CSV.

Need something printed, not just on-screen?

Desmos is great for graphing on-screen. graphingcalculator.org is built for the moment you need a physical page — a worksheet, a handout, a printed reference — generated at exact scale and ready to print.

Built for classrooms

Generate a clean worksheet in seconds — pick a grid or calculator, adjust it to your lesson, and print a class set. No login, no watermark, no per-download limit.

See graph paper options