These are silly ChatGPT-crafted calculators or text converter tools I asked it to make me. They are entirely self-contained HTML/CSS/JS files that call no blobs/APIs and can be saved as a *.HTM to be used locally without internet. They were not written by me; they were crafted by ChatGPT, but are what came about as a result of requests for such a file, by me.

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LOTPAC - If you won W amount of money as a lump sum in the lottery, and wanted to only keep K amount of it, and give the rest away over Y years, you could give G amount per day/week/month. For example if you won $35mil and only wanted to keep $1mil and give the rest away over 40 years, you can give away:

• $2,089.04 every day for 40 years.
• $14,663.46 every week for 40 years.
• $63,541.67 every month for 40 years.

The Superman Cost - If Atari 2600 game Superman sold in 1978 for $27.99 on a 4k ROM cartridge, how much would that price-per-kilobyte metric stack up to another game, in the different-years' dollars?

• Example: If you wanted to buy Battlefield 6's 80GB at the same price-per-kb as the Atari game Superman, you would have to pay $573,235.20 in 1978 dollars, or $2,751,528.96 in 2025 dollars (adj-inf).

Time Adder - If you have a bunch of times like 3:33, 4:17, 8:42, etc and want them all added up into a dd:hh:mm:ss format, use this. It auto-calcs based on the most recent entry, and disallows numbers over 59 where relevant.

Ascabet Converter - This is a specific style of 1337-speak I made up long ago, and this is will convert letters/words you enter into the top, into my style. It's very buggy, though, so would require knowing the style already to make sure it's correct, but would at least speed things along to ensure you didn't have to press every key and could just skim it to edit it.

Find, Randomly Replace 4 - This a find-replace tool, except there are 4 blanks for what to replace the first word with, and will semi-randomly replace them (avoids the same replacer following itself).

For example, you could:

• Find every whole-word occurrence of man and replace with either bloke, chump, dude, or bro, without replacing two of the same in a row.

Single Linebreak Remover/Longwrapper - Removes all single line breaks, so that plaintext paragraphs will be one single long string, but preserves double line breaks so that paragraphs should remain preserved.

Example:

Turns:                              Into:
This is a paragraph with            This is a paragraph with narrow margins that I want removed. Let's do that.
narrow margins that I want
removed. Let's do that.             This is another paragraph, just like it. So, let's remove the margins and make them one long line each.

This is another paragraph,
just like it. So, let's
remove the margins and make
them one long line each.

Hardwraps to Character Margins - Preserves whole words when wrapping text to a user-specified monospace width, if that makes sense. Defaults to 52 characters wide. Basically the opposite of the above Single-Line-Break-Remover.

Longwrapper+Hardwrapper52 - Sorta-combines the two previous converters: Removes single line breaks to a huge line and preserves paragraphs, whole-word line breaks within a 52-char margin (not customizable).

20-field Find-Replace - Paste in a body of text. Enter in up to 20x sets of find-replace pairs, click convert. All of them found-replaced at once. Very useful for swapping around names of characters so they have new roles in a story, quickly.

Hydration by 5oz @ 11min @ 8hr - A grid of checkboxes, split up into 11 minute segments across 8 hours, and each ticked timestamp checkbox increases a progress meter, to help keep track of drinking 2L of water over 8 hours. Update: The Hydration Tool was modified on 9/2/25; the old one is here.

Hydration by Tbsp @ 1.5 Liters - Another grid of checkboxes, in 5 rows of 20, so you can check off how many tablespoons of water you drank today. Doesn't save progress between loads, but counts up by 1% for each tablespoon. Drink as little as 1 tbsp, up to how much you feel like, and try to score 100% by the end of whenever you have to leave. Its filename is no.2 because the first one had a 10×10 grid. Might be added later.

4x4 YouTube Autoplay Muted - A 4×4 grid of embedded YouTube videos (swap out the video ID in the code) and then resize its tab, to watch all four at once. Example shows UNIS performances of Swicy. If you open it into a new tab and drag the tab free, you can resize the window so there are no black edges.

1x3 YouTube Autoplay Muted Verticals - A single row, 3 across, of vertical YouTube videos (swap out the video ID in the code) and then resize its tab, to watch all 3 at once. Example shows UNIS performances of Swicy focused on Seowon. If you open it into a new tab and drag the tab free, you can resize the window so there are no black edges.

GPS GMaps Link Generator - Enter the two numbers for a GPS coordinate, and click submit, for a handy Google Maps link that zooms in to see where that is.

For example, entering:

Sticky-Note Quantity Calculator - Independently develop which number of sticky notes you will need for each letter (each for upper- and lower-case), and then input the number of sticky notes you'll need for each letter, type out the message you want to spell, and it will spit out the total number rounded up to the nearest 10. Not mobile friendly, and not well tested. Blanks or spaces count as zero.

Tau Percentage-Matching Date Calculator - A method of calculating age I have decided is called your Tau age, ends up having potential to match with someone on when your mutual percentage lines up on a certain date. Your Tau age would look like 49:2, if you were 44 years old. The 2nd number is which quantity of 30-year-increments you're pursuing (such as “working on my second 30” would be ages 30-60), and the first number is the percentage through your 2nd, so someone who is 49:2 is 49% of the way through their 2nd 30, or about 44 years old. (50% of 30 is 15, so 30+15=45y/o, thus 50:2). This calculator attempts to discover upon what date two peoples' Tau ages would match percentages (such as 26:1 and 26:2).

Calburn - A simple calculator that takes into weight and distance walked, assuming a flat walking surface. Height measurements (feet, inches) are listed as variables but are not actually taken into account yet, pending an update where it could be related to stride length.

PaintGrid - A variable x variable field to generate a grid to the right side, and a preview pane of 10×10 of zoomed in pixels which will turn black on mouseover. The right side grid section will dim based on percentage of cells filled in, so that 100% filled is black. Inspired by Demonin's Paint By Numbers web game.