Contractor Markup Calculator: Overhead, Profit & Bid Price
Every project starts with an innocent question that fast turns complex. How do I price this job so I don’t overcharge or lose business while … Read More
JSCalc
Dropshipping Profit Margin Calculator: Net Per Order
For many drop shippers, their journey start with this trap: They have an eight-dollar item on AliExpress and figure they’ll turn it around at thirty … Read More
Food Profit Margin Calculator: Food Cost % & Menu Pricing
In kitchens, we talk about food cost as if it’s a percentage, and most people know they should care about it. But very few understands … Read More
Profit Margin Calculator: Margin, Markup & Selling Price
If you’re selling something, you probably have an idea of how much it costs you to make your product. How many hours of work does … Read More
Correlation Matrix Calculator: Pearson r for 3-5 Variables
Start with a few (three or five) variables whose relationships you suspect but don’t see directly. Your intuition is shown as a matrix of numbers … Read More
Pearson Correlation Significance Calculator + Critical r
People fail to recognize that if they gets a correlation coefficient of 0.5, there must be a strong relationship between those two variable. Not so … Read More
Scatter Plot Correlation Coefficient Calculator (Pearson r)
Do you have some sort of data? You has two columns of numbers that you suspect is related somehow, but when you look at them, … Read More
Correlation Coefficient P Value Calculator (r and n)
Take your correlation coefficient, which shows a correlation of 0.5 between two variables. That’s pretty impressive, unless you consider it came from a mere sample … Read More
Angle to Degrees Converter (Radians, Gradians, DMS, Mils)
There are angles all around and they’re not always easy to work with. If you want to measure a piece of pie, you intuitively know … Read More
Electrical Energy Converter: kWh, Wh, J, MJ, BTU, Therm
When you look at your electric bill, it’s just some arbitery number on a piece of paper; until you try to calculate it yourself. Then … Read More