Calculators, simulators and projects from the workshop, kitchen and card table.
3D printing Laser cutting Computing Food Drones Hobbyist
Calculators & tools (8)
3D Thread Designer
Design threads in 3D.
ThreadPath
Thread toolpath generator.
Spool Material Calculator
Length, volume and weight of filament, wire or rope on a spool.
Drill Size Finder
Nearest number, letter, fractional and metric drill to any size.
SVG Map Studio
Build and style SVG maps.
Column Sort
Sort a pasted grid of numbers by column or reading order.
Ranking Engine
Rank a list with as few comparisons as possible.
Bonding Matrix
Which adhesive bonds which materials.
File & media tools (7)
HTML Cleaner
Strip Word/Office cruft and clutter from HTML, then reformat it.
HTML Proofread Tool
Spelling and grammar check for HTML files.
MP4 Chapter Editor
Read, edit, detect and export chapters for MP4 videos.
SVG Editor
Open, inspect and edit SVG files.
SVG Optimizer
Open, optimize and edit SVG files.
Tracer: Raster to Vector
Trace raster images to SVG in the browser.
Amazon Order Extractor
Collect Amazon order history into CSV/JSON.
YouTube Description Extractor
Collect video descriptions from videos, playlists and channels.
Sports & games (5)
NFL Season Simulator 2026
Season simulator with betting-line predictions and tiebreakers.
MLB Interleague Differential
Live interleague win differential heatmaps and timelines.
Cal Raleigh HR Tracker
2025 home run tracker.
Whist/Pinochle Tournament Creator
Build balanced tournament schedules.
Five-Handed Pinochle
Live score tracker.
Money (2)
Retirement Simulator: 401k & Investments
Monte Carlo, historical or fixed returns, with a year-by-year table.
Home & holidays (3)
String Light Calculators
Light strings for cone, sphere, cylinder, column and ellipsoid shapes.
PNW Poa Annua Guide
Multi-season lawn plan with a 2-gallon tank mix.
Recipes
Recipes and NFL game-day menus.
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