Percentile Calculator: Rank a Value or Find P90 in Data
Ever been told you’re “in the top ten percent,” only to have no idea what that will do to your score? For some reason, percentiles … Read More
JSCalc
Concrete Block Calculator: CMU, Mortar & Rebar Counts
How many bags of mortar do I need? It’s a question that can cause people to panic. They might be standing in front of rows … Read More
Sleep Cycle Calculator: Best Bedtime & Wake Times
After 8 hours of sleep you may not feel well-rested at all, because you did not actualy wake up between your sleep cycles, but in … Read More
401k Retirement Calculator With Employer Match
If you’re like most people, there’s money waiting for you from your company’s 401(k) match. It’s not some mysterious stash of cash tucked away somewhere. … Read More
Car Loan Amortization Calculator With Trade-In & Tax
Purchasing a new car sounds easy: You go to dealership, choose the car, negotiate price, and then hand them some paperwork with a payment amount … Read More
Decimal to Fraction Calculator: Exact & Repeating
Here you are, standing in home improvement aisle with a length of lumber in hand. You want it cut exactly to size. The design involve … Read More
Infant Weight Percentile Calculator (WHO & CDC LMS)
You look down at the number, then close the scale. Did it mean you’ve been keeping your baby alive? Or was it a sign of … Read More
Poker Probability Calculator: Outs, Pot Odds & Equity
On the flop: You have a flush draw and your opponent goes all in. Your heart is racing. Real tension here. You’ve got nine cards … Read More
Probability Calculator: Events, Combinations & Permutations
Imagine I give you a coin and ask you to hold it in your hand. You know it will land heads or tails, but you … Read More
Z Score Calculator: z, Percentile & Normal Probability
Take a standardized test and score an eighty-five. You may be feeling decent about yourself until you see that the class average was seventy, with … Read More