Statistics Calculators That Actually Work
Calculate confidence intervals, run hypothesis tests, analyze regression, and perform statistical analysis. Get instant answers to your data analysis questions without the hassle of registration or hidden fees.
Most Popular Statistics Calculators
Confidence Interval Calculator
Calculate confidence intervals for means, proportions, and other statistics. Essential for understanding the uncertainty in your data.
T-Test Calculator
Perform one-sample, two-sample, and paired t-tests. Compare means between groups and determine if differences are statistically significant.
Regression Calculator
Calculate linear regression coefficients, R-squared, and significance tests. Understand the relationship between variables in your data.
P-Value Calculator
Calculate p-values for z-tests, t-tests, and chi-square tests. Determine if your results are statistically significant.
Standard Deviation Calculator
Calculate sample and population standard deviation, variance, and other descriptive statistics for your dataset.
Chi-Square Calculator
Perform chi-square tests for independence and goodness of fit. Test categorical data relationships and distributions.
Common Questions
How accurate are these statistics calculators?
We use the same formulas that statisticians and researchers use. Our calculations follow standard statistical methods that you can verify with textbooks or other statistical software.
Can I use these for academic research?
These calculators are great for learning and getting quick results. For formal academic research, it's always good to double-check with statistical software like R, SPSS, or Excel.
Do you store my data?
No. All calculations happen in your browser. We never see your data, and nothing gets sent to our servers. Your statistical data stays completely private.
Which calculator should I use first?
Start with descriptive statistics like mean and standard deviation to understand your data. Then use confidence intervals to estimate uncertainty, and hypothesis tests to make comparisons.
Are these calculators really free?
Yes, completely free. No registration, no hidden fees, no premium versions. Just open any calculator and start using it.
Statistics Calculators
Free statistics calculators for confidence intervals, regression analysis, hypothesis testing,. No signup required.
6 calculators found