Time Zone Converter With DST and Meeting Hours
Time zones aren’t mere lines on a map. They’re complex political systems that change throughout the seasons. Set an event for 10am and think it’s … Read More
JSCalc
Blood Alcohol Percentage Calculator for BAC Estimates
You’ve had two beers over an hour. You’re wondering whether or not you should attempt driving home. It’s an important question but it never has … Read More
Mortgage Calculator With Taxes, PMI, HOA, and Extra Pay
It’s easy to get swept away by home’s sticker price, that number seem so reasonable! But that’s not what hits your bank account month after … Read More
Pregnancy Due Date Calculator by LMP, IVF, Scan
You want accuracy in a process where there’s a lot of biological variability, so you get anxious waiting for due date: one date from your … Read More
Retirement Calculator for Savings Projection and Gap
When most people think about retirement, they’re thinking about a magic number. On that last day you punch out for good, they’d like to be … Read More
Age Calculator With Birthday Countdown
Subtracting two isn’t enough; there’s a bit more to knowing your real age. On paper it’s easy, but subtracting two years from each other isnt … Read More
Fraction Calculator for Mixed Numbers, LCD, GCD, and Conversions
If you’ve ever held a tape measure or a measuring cup in one hand and another in the other while standing in a workshop or … Read More
Tip Calculator With Split, Tax, and Rounding
But then comes that moment: The check is on the table. Your eyes dart around between your friends’ faces, the bill total, and the tax … Read More
Concrete Calculator: Slab, Footing, Column, Wall, Stairs
So here’s your dilemma: like most people doing a patio job, you’re standing there looking at some dirt and wondering if you has enough concrete … Read More
Percentage Calculator for Change, Discounts, Markup, and Reverse Percent
I’m sure you’ve been out to dinner with your friends only to realize you don’t know how much to tip or how much each person … Read More