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Smart Tools,
Brilliant Results.

I'm Ronald Reeves, and I build fast, no-nonsense bilingual tools for developers, financial planners, and anyone who just needs a straight answer, right now.

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Handy Utilities

Free, Fast & Secure

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Our Specialized Tools

Robots.txt Tester & Validator - Free Checker

Free robots.txt tester and validator. Check Disallow/Allow rules per user-agent, catch blocked pages instantly, and fix crawl errors before Google does.
HTTP Headers Viewer

View your own browser's HTTP headers or analyze the headers of any public website. Professional HTTP request and response header inspector.
Regex Tester - Test Regular Expressions Online

Test JavaScript regular expressions in real time with live match highlighting, capturing group breakdowns, and instant replacement previews. 100% client-side.
Hex to Decimal Converter - Convert Hex Online

Free hex to decimal converter. Convert any hex value to dec instantly with bit/byte breakdown - ideal for colors, memory addresses, and code.
VTT to SRT Converter - Free Online Tool

Convert VTT to SRT instantly with our free VTT to SRT converter. Fast, secure, and 100% browser-based — no uploads, no signup required.
Proxy & VPN IP Checker

Determine if an IP address belongs to a known Proxy, VPN, Tor exit node, or data center.
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Precision Calculators

Auto Loan Calculator

Estimate your monthly car payments, total interest, and the true cost of your next vehicle purchase with our comprehensive auto loan calculator.
VA Mortgage Calculator

The VA Mortgage Calculator helps estimate the specialized costs associated with a Veterans Affairs loan.
Cal to Joule Converter: Calorie to kJ

Free cal to joule converter. Instantly convert calorie to joule, kcal to kJ, and food Calories to kilojoules with exact 4.184 factor.
Body Fat Calculator

Calculate your body fat percentage, body fat mass, and lean body mass using the U.S. Navy Method and BMI Method. Plan your fitness journey with our interactive tool.
Grade Calculator & Final Exam Predictor

Free grade calculator: find your weighted course grade and the score you need on your final exam to hit any target grade.
Interest Rate Calculator

Accurately determine the real interest rate on loans when only the monthly payment and total price are provided.

Latest Insights

Slow Progress, Other Projects Demand Time
General

Slow Progress, Other Projects Demand Time

A quiet content month while other projects take priority, plus a backlog of calculators and tools that never made it into a previous update.

Ronald Reeves
2026-07-09
Rocket Lab / Varda Space - Winnebago Missions
Space

Rocket Lab / Varda Space - Winnebago Missions

A deep dive into the Varda Space Winnebago missions, the software architecture of W-2 and W-3, and the global infrastructure supporting orbital manufacturing.

Ronald Reeves
2026-06-05
Site Update: New Financial Calculators, Network Tools, and Fresh Articles
General

Site Update: New Financial Calculators, Network Tools, and Fresh Articles

Site update: New financial calculators, network security tools, and a deep dive into orbital manufacturing missions.

Ronald Reeves
2026-05-15
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