Open Utility Standard 0.1
Essential tools for better decisions.
Professional calculators and essays built for clarity. No tracking, no paywalls, no clutter. Just pure browser-based utility.
"Simplicity is the ultimate sophistication." - Leonardo da Vinci
"Design is not just what it looks like and feels like. Design is how it works." - Steve Jobs
Privacy First
No server-side tracking.
Standard Math
Documented formulas only.
Zero Sign-up
Instant tool access.
Ownership
Regenesis publishes original tools and support content under a named site identity with public policy pages.
Review cadence
Guides and calculators are reviewed when formulas, thresholds, or assumptions materially change.
Corrections
Readers can report issues through the public contact page.
Financial
Debt Consolidation Calculator
Compare current debts with a single consolidation loan and estimate payment and interest changes.
Mortgage Refinance Calculator
Estimate monthly savings, break-even timing, and total cost changes before refinancing.
State Payroll Calculator
Estimate employee take-home pay and employer payroll costs using current federal and state assumptions.
Freelance Tax Estimator
Estimate self-employment tax and quarterly payments for freelancers and independent contractors.
Solar Panel ROI Calculator
Estimate system payback, long-term savings, and project ROI using your local usage assumptions.
Rent vs. Buy Comparison
Compare the long-term cost of renting versus buying based on appreciation, costs, and timeline.
Legal
Professional
HVAC Load Calculator
Estimate residential heating and cooling load using Manual J-style assumptions and climate inputs.
Wire Gauge Calculator
Estimate wire size using ampacity, run length, voltage drop, and common NEC reference points.
Pipe Friction Loss Calculator
Estimate pressure drop in water piping with Hazen-Williams assumptions and fitting allowances.
Health
Writing
Premium restraint.
Aimed at utility.
The interface feels clean, predictable, and objective. We use strong typographic hierarchy, sober copy, and stark layouts to provide space to think and calculate without distraction.
Objective scope
Every tool states its limitations clearly.
Honest language
Writing is direct, void of marketing fluff.
Open formulas
Math & assumptions are out in the open.
Accessible roots
Tools work fast, natively in the browser.
Contextual Guides
How to Evaluate a Mortgage Refinance Break-Even Point
A practical guide to deciding whether refinancing saves money once payment changes, closing costs, and time horizon are all considered together.
Legal EssayHow Child Support Models Differ: Income Shares, Percentage, and Melson
An overview of the major child support model types, why two states can produce different estimates, and where formula-based tools stop being the full answer.
Financial EssayWhat Actually Changes a Paycheck Estimate
A plain-English walkthrough of why gross salary, withholding assumptions, pay frequency, and pre-tax deductions can all change take-home pay.
Frequently
Asked Questions
Are these calculators a replacement for professional advice?
No. They are planning tools and educational estimates. Legal, financial, medical, and engineering decisions should be verified with a qualified professional.
Do I need an account to use the site?
No. The tools on the site do not require sign-up, and calculations run directly in your browser.
How do you handle corrections or formula updates?
The methodology page explains how tools are reviewed, what assumptions are used, and how readers can report issues.