Linear Correlation Coefficient r Calculator (Pearson r)
It’s easy to enter both sets of numbers in the two columns and see if there is any connection at all. Perhaps it’s the amount … Read More
JSCalc
Confidence Interval of Proportion Calculator (Wald & Wilson)
One number stands out from survey results. You see fifty-four percent approve. Maybe you’re confident now that you know. But here’s where it’s dangerous: what … Read More
P-Value Calculator From Z Score – One and Two Tailed Test
Take a number. It is something you got out of a textbook problem or based off of a spreadsheet. Until you turn it into a … Read More
Catalytic Converter Temperature Calculator and Health Check
To measure how well your catalytic converter is working, you simply need to know how hot it gets. A catalytic converter in your vehicle are … Read More
Weight on the Moon Converter – Earth to Moon and Planets
The Moon converter lets you calculate what you would weigh on other celestial objects. Type in how much you currently weigh and where you want … Read More
Wire Size Voltage Drop Calculator – NEC AWG Sizing Tool
Now maybe you’ve been noticing how dim the lights are these days, or how the air conditioner drops voltage on the whole house. You’re experiencing … Read More
Electric Motor Torque Calculator (Volts, Amps, RPM)
When you read the nameplate on a motor, what do you see? You see the amperage and volts. What about the torque? Torque is the … Read More
Motor Torque Calculator: Find Torque from Power and RPM
In motors, we don’t pick them by their horsepower rating. We pick them by amount of torque they deliver so that as load increases, the … Read More
Torque Units Conversion Calculator: N-m, ft-lb, in-lb, kgf-m
You’re tightening a bolt, and the manual says to do it with one hundred foot-pounds and your wrench displays values in Newton-meters. Maybe you’re nervous … Read More
Gearbox Gear Ratio Calculator – Reduction & Torque
The page also includes a gearbox gear ratio calculator that answer two main questions: How much does the gearbox return in torque? How much does … Read More