Tools & Utilities

A collection of offline, zero-bloat web tools.

Fiber Arts & Crafting

Skein & Gauge Calculator - Computes remaining yardage from a partial skein weighed against the ball band, converts pattern gauge to actual gauge with stitch-repeat rounding, and generates even-shaping instructions across a row or over rows.
HTV Placement Calculator - Cricut heat-transfer vinyl cut-size and placement calculator across six garment types and 27 sizes, with an aspect-ratio-constrained cut, a to-scale placement diagram, and batch cut lists.
Row & Repeat Counter - A persistent multi-project row counter with pattern-repeat tracking, row-pinned notes, and Screen Wake Lock support.
Yarn Substitution Checker - Compares a pattern yarn against a candidate by yardage-per-gram density and computes how many skeins of the substitute to buy across differing put-ups.
Craft Job Pricing Calculator - Per-piece cost accounting (blank, vinyl consumed, labor, overhead), margin or markup pricing, and a whole-job quote block.
Gauge-True Graph Paper - Generates knitting chart paper with cells proportioned to stitch:row gauge and needlepoint mesh-count grids, printed at true physical size with bold counting rules.
Cricut SVG Vectorizer - A client-side tool to convert PNGs/JPEGs into clean SVG cut paths that runs entirely offline.
Local Storage Stitch Tracker - A row and stitch counter that uses local storage for offline progress tracking.
Yarn Substitution Calculator - A calculator that determines required skeins based on custom yardage.

Pump Room Chemistry Calculator - Chemical dosing calculator and Langelier saturation index gauge for the competition pool, instructional pool, splash pad, and spa. Computes chlorine, acid, soda ash, calcium chloride, and stabilizer doses from test-kit readings, flags Title 22 FC/pH violations, and checks turnover time, minimum flow, and filter loading from a flowmeter reading.
Reading Queue - Offline chemical-reading capture form. Queues readings taken without signal, then batch-copies or exports CSV for entry into DigiQuatics once back in range.
Rotation Grid - Generates a timed lifeguard stand rotation grid from the on-shift roster and station list, with automatic break distribution and mid-shift rebuild.
Chem Stock Forecaster - Chemical inventory burn-rate forecaster. Derives consumption from logged tank levels with delivery detection, projects days-to-empty, and computes a reorder-by date against supplier lead time.
Contamination Response Calculator - CDC fecal and vomit incident calculator. Computes the hyperchlorination dose and CT-derived hold time for formed-stool and diarrheal incidents, with a reopening countdown.
Pool Chemistry Dosing Calculator (Alphie's Calculator) - An offline tool for pump room use.