Util-Hub

Fast, Free & Private Tools

Online Utility Tools for Developers & Users. No sign-up required. Bookmark us and never search for these tools again!

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📊 Tax

Sales Tax Planner

Estimate sales tax using your verified rate and taxable amount.

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🚗 DMV

DMV Fee Estimator

Add the registration, title and other fees from your official quote.

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🏢 Compliance

Business Compliance

Budget the verified filing and permit fees you enter.

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🏠 Tax

Property Tax

Calculate annual tax from your taxable value and verified rate.

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🧾 Generators

Invoice Generator

Draft a simple invoice and print it or save through your browser.

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📱 Generators

QR Code Generator

Create QR codes for URLs, WiFi, and business cards.

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🆔 Generators

GUID Generator

Generate bulk unique identifiers (UUIDs) for development.

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🗂️ Formatting

JSON Formatter

Prettify, minify, and validate JSON data strings.

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🔑 Security

Hash Calculator

Calculate MD5, SHA-1, and SHA-256 hashes for strings.

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💱 Converters

Currency Converter

Convert between global currencies using a rate you provide.

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₿ Converters

Crypto Converter

Convert between cryptocurrencies and fiat currencies.

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📏 Converters

Units of Measure

Convert length, area, volume, and other physical units.

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⚖️ Converters

Weight & Mass

Convert between grams, kilograms, pounds, and ounces.

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🌡️ Converters

Temperature Converter

Convert between Celsius, Fahrenheit, and Kelvin.

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💾 Converters

Data Size Converter

Convert between Bytes, KB, MB, GB, TB, etc.

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How Util-Hub Helps You Save Time and Money

Use practical tools for everyday calculations without an account. Format JSON before debugging, generate a batch of UUIDs for test records, compare decimal and binary file sizes, or convert a temperature with the formula visible beside the tool.

Our financial tools use your own verified figures rather than pretending that a single stored rate applies to every address or transaction. Read the worked example, check the units and keep your source quotation. See our methods and October 2026 corrections.

📚 Featured Guides & Resources

Tax

Understanding Sales Tax: How State, County, and City Rates Combine

Learn how the multi-layered US sales tax system works and why rates differ by location.

 DMV

A Guide to Vehicle Registration Fees

Understand how weight, value, and location determine your DMV registration bill.

 Property Tax

Navigating US Property Taxes: Assessments & Exemptions

A complete guide to how property taxes are calculated and how to appeal your assessment.

 Payroll

Understanding Your Paycheck: Federal & State Deductions

Deep dive into what gets deducted from your pay and how to optimize your take-home.
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Browser utilities
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Planning categories
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US States
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Free Utility Tools

Frequently Asked Questions

Are Util-Hub calculators free to use?

Yes, every tool on Util-Hub is 100% free. We are supported by advertising, which allows us to offer all of our calculators and utilities at no cost to users. There are no hidden fees, no premium tiers, and no sign-up required.

How accurate are the tax rate estimates?

The planner uses the rate you enter. We do not certify countywide rates. Check the transaction address, effective date and exemptions with the relevant tax authority before using a figure.

Is my data private when using the calculators?

Absolutely. All calculations are performed entirely in your browser using JavaScript. We never transmit your financial inputs to our servers. Your numbers stay on your device. Read our Privacy Policy for full details.

Can I use these tools for professional purposes?

Our tools are designed for informational estimates and quick reference. They should not replace professional financial, legal, or tax advice. For important decisions, please consult a qualified professional. See our Disclaimer for details.