Binomial Probability Calculator: P(X=k), ≤k, ≥k
Binomial probability tells you whether you have a certain number of defects, and whether that is normal or a cause for concern. It works under … Read More
JSCalc
Confidence Interval Calculator (Mean & Proportion, z/t)
Uncertainty comes in form of confidence intervals: a range within which it’s likely that true number lies given our small amount of data. The plus … Read More
Pressure Altitude Converter With Density Altitude
Enter your local barometer into the calculator (above) and you has your pressure altitude…all without having to do any math in your head. Waiting for … Read More
Velocity Banking Calculator: HELOC Payoff & Interest Saved
Sounds pretty clever right? This is called velocity banking, and it looks like an accountant’s head-spinning attempt at financial trickery. Here’s the basic concept: use … Read More
Semester GPA Calculator: Term & Cumulative GPA Tool
Anxiety grips you when you see your syllabus and wonder what kind of shape you’re going to be in academicaly. Worry becomes fact when you … Read More
G Force Calculator: Acceleration, 0-60, Cornering & Braking
In fact you don’t notice the pull of gravity acting on you, but if a sneeze hits your face, you do. It happen quickly, and … Read More
Restaurant Tip Calculator: Pre-Tax vs Post-Tax & Split
It’s dinner with some pals. Food appears in waves across forty minutes. At end there’s no clear total on the check (there is service charges … Read More
Shear Force and Bending Moment Calculator for Beams
Next, you specify the type of beam. For most applications, it’s a simple “simply supported” beam that sits on two separate supports (e.g., bridge deck, … Read More
Power to Weight Ratio Calculator: hp/ton, W/kg, lb/hp
You’ve all been there: reading through the spec sheet, and seeing five-hundred horsepower promised in brochures, only to be disappointed by slow takeoff while merging … Read More
Moon Phase Calculator: Illumination & Age for Any Date
The moon changes shape every night… Rapidly, on a schedule most of us are unaware of, except that we think: “Oh, I saw that moon … Read More