Stats Calculator Online
Chart Makers Calculators
Create clear statistical visualizations from your data. Free tools on Stats Calculator Online with formulas, how-to steps, similar calculator widgets, tidbits, and exportable reports.
- Bar Chart CalculatorCompare categorical frequencies
- Pie Chart CalculatorPart-to-whole proportions
- Histogram CalculatorDistribution of continuous data
- Box Plot CalculatorFive-number summary visualization
- Scatter Plot CalculatorRelationship between two variables
- Line Chart CalculatorTrends over ordered categories
- Q-Q Plot CalculatorAssess normality visually
- Bell Curve Generator CalculatorNormal curve with mean and SD
- Dot Plot CalculatorIndividual points and distribution
- Density Plot CalculatorKernel-density style visualization
- Violin Plot CalculatorDensity + box-style summary
- Stem-and-Leaf Plot CalculatorPreserve values while showing shape
- Funnel Chart CalculatorConversion stages
- Tree Map CalculatorNested proportional rectangles
- Waterfall Chart CalculatorCumulative gains and losses
- Area Chart CalculatorFilled trend visualization
- Bubble Chart CalculatorThree-variable scatter
- Heat Map CalculatorMatrix intensity visualization
- Control Chart CalculatorProcess monitoring limits
- Pareto Chart CalculatorBars plus cumulative line
- Radar Chart CalculatorMultivariate profile plot
- ROC Curve CalculatorClassifier performance curve
- Forest Plot CalculatorEffect sizes across studies
- Bland-Altman Plot CalculatorAgreement between two methods
- Lollipop Chart CalculatorMinimal bar alternative
- Slopegraph CalculatorChange between two time points
- Sankey Diagram CalculatorFlow quantities between nodes
- Venn Diagram CalculatorSet overlaps
- Chart Builder CalculatorPick a chart and paste data
- Chart Maker CalculatorGuided chart creation from data
Tidbits from Stats Calculator Online
Quick tip
Sample vs population SD
Use n−1 (sample) when your data are a subset of a larger group; use n when you truly have the whole population.
Open SD calculator →Tidbit
A p-value is not the probability H₀ is true
It is the probability of data at least as extreme as yours if H₀ were true. Pair it with an effect size and confidence interval.
P-value calculator →Need a path?
Not sure which test to run?
Start with the statistical test selector, then open the matching calculator with formulas and APA export.
Test selector →
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Cross-topic picks from Stats Calculator Online
- One-Sample t-Test CalculatorHypothesis Testing · Test a sample mean against a hypothesized value
- Mean, Median, Mode CalculatorDescriptive Statistics · Calculate arithmetic mean, median, and mode
- Normal Distribution CalculatorProbability Distributions · PDF, CDF, and quantiles of the normal
- Simple Linear Regression CalculatorRegression Analysis · Fit y = a + bx with inference
- Chi-Square Independence CalculatorHypothesis Testing · Test association in contingency tables
- Sample Size & Power CalculatorHypothesis Testing · Plan sample size for desired power