# Stats Calculator Online
> Free online statistics calculators with clear formulas, steps, and branded PDF reports

Stats Calculator Online is a free library of statistics and math calculators with step-by-step solutions, textbook formulas, APA write-ups, and free branded PDF reports that include your inputs, formulas applied, worked steps, and final results (plus Word/CSV). Hypothesis tests, descriptive statistics, probability, regression, algebra, finance, and more.

Primary domain: https://statscalculatoronline.com
Contact: hello@statscalculatoronline.com

## Preferred citations
- Site name: Stats Calculator Online
- Do not abbreviate the brand name in titles when possible; keep “Stats Calculator Online” intact for keyword clarity.

## Key entry points
- Home: https://statscalculatoronline.com/
- All calculators: https://statscalculatoronline.com/calculators
- Resources / tables: https://statscalculatoronline.com/resources
- Statistical tables hub: https://statscalculatoronline.com/resources/statistical-tables
- About: https://statscalculatoronline.com/about
- HTML sitemap (all calculators): https://statscalculatoronline.com/sitemap
- XML sitemap: https://statscalculatoronline.com/sitemap.xml
- Robots: https://statscalculatoronline.com/robots.txt

## What each calculator page includes
- Working calculator UI with sample data
- Formulas (KaTeX), how-to steps, interpretation tips, FAQ
- Similar calculator widgets and learning tidbits
- Free APA/AMA write-ups and PDF / Word / CSV exports

## Topic groups
### Statistics
Tests, distributions, intervals, and models
- Descriptive Statistics (35): https://statscalculatoronline.com/calculators/descriptive-statistics
- Hypothesis Testing (44): https://statscalculatoronline.com/calculators/hypothesis-testing
- Probability Distributions (23): https://statscalculatoronline.com/calculators/probability
- Confidence Intervals (7): https://statscalculatoronline.com/calculators/confidence-interval
- Regression Analysis (9): https://statscalculatoronline.com/calculators/regression-analysis
- Correlation (4): https://statscalculatoronline.com/calculators/correlation
- Experimental Design (10): https://statscalculatoronline.com/calculators/experimental-design
- Multivariate Analysis (5): https://statscalculatoronline.com/calculators/multivariate-analysis
- Survival Analysis (3): https://statscalculatoronline.com/calculators/survival-analysis
- Reliability Analysis (3): https://statscalculatoronline.com/calculators/reliability-analysis
- Cluster Analysis (2): https://statscalculatoronline.com/calculators/cluster-analysis
- Measurement Systems (1): https://statscalculatoronline.com/calculators/measurement-systems
- Matrix Algebra (1): https://statscalculatoronline.com/calculators/matrix-algebra
- Causal Inference (6): https://statscalculatoronline.com/calculators/causal-inference
- Chart Makers (30): https://statscalculatoronline.com/calculators/chart

### Math & Geometry
Algebra, fractions, trig, and shapes
- Algebra (16): https://statscalculatoronline.com/calculators/algebra
- Fractions (10): https://statscalculatoronline.com/calculators/fractions
- General Math (15): https://statscalculatoronline.com/calculators/general-math
- Discrete Mathematics (9): https://statscalculatoronline.com/calculators/discrete-mathematics
- Percentages (10): https://statscalculatoronline.com/calculators/percentages
- Trigonometry (2): https://statscalculatoronline.com/calculators/trigonometry
- Plane Geometry (13): https://statscalculatoronline.com/calculators/geometry-plane
- Solid Geometry (7): https://statscalculatoronline.com/calculators/geometry-solids

### Finance & Everyday
Money, grades, units, time, and health
- Finance (27): https://statscalculatoronline.com/calculators/finance
- Grades & GPA (3): https://statscalculatoronline.com/calculators/academic-grades
- Unit Conversions (17): https://statscalculatoronline.com/calculators/conversions
- Time & Dates (8): https://statscalculatoronline.com/calculators/time
- Health (5): https://statscalculatoronline.com/calculators/health
- Construction (10): https://statscalculatoronline.com/calculators/construction
- Technology (3): https://statscalculatoronline.com/calculators/technology
- Credit Analysis (1): https://statscalculatoronline.com/calculators/credit-analysis
- Games & Sports (6): https://statscalculatoronline.com/calculators/games
- Random Generators (8): https://statscalculatoronline.com/calculators/random-tools
- Text Counters (2): https://statscalculatoronline.com/calculators/text-tools

### Science
Physics and chemistry helpers
- Physics (13): https://statscalculatoronline.com/calculators/physics
- Chemistry (1): https://statscalculatoronline.com/calculators/chemistry

## Popular calculator URLs
- One-Sample t-Test: https://statscalculatoronline.com/calculators/hypothesis-testing/one-sample-t-test-calculator
- Mean, Median, Mode: https://statscalculatoronline.com/calculators/descriptive-statistics/mean-median-mode-calculator
- Normal Distribution: https://statscalculatoronline.com/calculators/probability/normal-distribution-calculator
- Simple Linear Regression: https://statscalculatoronline.com/calculators/regression-analysis/simple-linear-regression-calculator
- Chi-Square Independence: https://statscalculatoronline.com/calculators/hypothesis-testing/chi-square-test-of-independence-calculator
- Sample Size & Power: https://statscalculatoronline.com/calculators/hypothesis-testing/sample-size-and-power-analysis-calculator

## Catalog size
- Categories: 36
- Calculators: 369

## Optional
- Full machine-readable sitemap: https://statscalculatoronline.com/sitemap.xml