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Max Heart Rate Calculator by Age: Zones, Zone 2 & Karvonen

Weight Loss Calculator: Calories, % Lost & Goal Date | StatsUnlock

Protein Intake Calculator for Muscle Gain & Weight Loss

Calorie Calculator: Maintenance, Deficit, Burn | StatsUnlock

BMI Calculator: Adult, Child, Asian & Amputee | StatsUnlock

Margin of Error Calculator – Survey, Mean & Sample Size

Box and Whisker Plot Maker – Free Online Box Plot Generator | Stats Unlock

Kolmogorov-Smirnov Test Calculator – Free Online K-S Test for Normality & Two-Sample Distributions

Multiple Linear Regression Calculator – Free Online OLS Tool with Coefficients, R² & VIF | StatsUnlock

Confidence Interval Calculator: 90, 95 & 99 CI with z-Table

ABOUT US

StatsUnlock provides free online statistics calculators, data analysis tools, ecology and wildlife research tools, and scientific resources. Analyze data, perform statistical tests, create charts, and understand results with simple, browser-based tools designed for students, researchers, and scientists.

A/B Test Sample Size Calculator (Free, With Duration)

Statistical Power Analysis Calculator (Free, No Signup)

Effect Size Calculators: Cohen’s d, Hedges’ g, Eta Squared & r

Type I and Type II Error Calculator & Visual Explorer

Sample Size Calculator: Survey, Mean & Power Analysis (Free)

P-Value Calculator: From z, t, Chi-Square, F & r (Free)

Heatmap Maker: Free Online Heatmap Generator & Calculator

Density Plot Maker Free | Kernel Density Estimation Tool

Area Chart Maker | Free Publication-Ready Area Chart Calculator

Violin Plot Maker | Free Publication-Ready Violin Plot Tool