Calculator Menu Blog
Posts about the making of this site.
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Sunday, May 3rd 2026
Shark Tank game and the calculations involved
Claude creates a Shark Tank game, and it reveals some interesting things to calculate
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Thursday, April 30th 2026
Shark Tank deals are difficult to compare
A discussion about the various offers on Shark Tank and how they are difficult to compare, plus other considerations
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Tuesday, April 28th 2026
How I Built a Speaking Speed Calculator
The original idea involved AI audio processing. Then a simpler approach emerged - and it turned out to be better.
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Saturday, April 25th 2026
Why Your Birthday Falls on Different Days Each Year (And the Pattern Behind It)
Ever wondered why your birthday shifts weekdays every year? Explore the calendar math, see the hidden pattern, and visualize your full birthday timeline.
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Saturday, April 25th 2026
How Unlucky Are You, Really? A Friday the 13th Reality Check
The story behind the Friday the 13th Survival Calculator - a fun one that tells you exactly how many you've lived through.
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Wednesday, April 22nd 2026
Building out the Animal-to-Human Years Calculators
Two new calculators that let you convert between human years and animal years — and why the classic '1 year equals 7 dog years' rule has always been wrong.
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Monday, April 13th 2026
Adding hourly-to-salary and salary-to-hourly calculators
Why I added a pair of pay-rate calculators to convert between hourly wages and annual salaries, and how they handle paid time off.
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Sunday, April 12th 2026
Starting this site with a mortgage payoff calculator
Why I started Calculator Menu with mortgage payoff tools, what those first calculators do, and what I learned building them.
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