Free Tools

Tools I Built & Use

Small, free utilities that solve real problems: no accounts, no paywalls, no tracking. I build these the way I teach IT, one practical problem at a time. New tools ship regularly.

For Developers

Everyday utilities for building, debugging, and shipping.

Regex Template Builder

Build and test regular expressions with plain-English templates and live matching.

RegexDeveloper Tools
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JSON Repair Tool

Fix broken JSON instantly: trailing commas, single quotes, unquoted keys.

JSONDeveloper Tools
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CSS Clamp Calculator

Generate fluid clamp() values for responsive type and spacing.

CSSDeveloper Tools
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UTM Builder

Build clean UTM campaign URLs with consistent naming conventions.

MarketingDeveloper Tools
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Passphrase Generator

Generate strong, memorable passphrases. Everything runs in your browser.

SecurityDeveloper Tools
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Time Zone Overlap Finder

Find meeting hours that actually work across time zones.

ProductivityDeveloper Tools
Open Tool

For Career & Money

Calculators for the decisions that shape an IT career.

Meeting Cost Calculator

See what a meeting really costs based on attendees and salaries.

CareerProductivity
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Contractor Invoice Generator

Create clean, professional invoices for contract and freelance work.

FreelancingCareer
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Salary by Metro

Compare salaries across US metro areas with downloadable data.

CareerData
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Trade School ROI Calculator

Compare trade school costs against expected earnings before you enroll.

CareerEducation
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1099 vs W-2 Calculator

Compare contractor vs employee pay after taxes and benefits.

CareerTaxes
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Freelance Quote Builder

Build client quotes from your real hourly rate.

FreelancingCareer
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Home Office Deduction Calculator

Run the home office deduction both ways and take the bigger number.

TaxesCareer
Open Tool