FAQ & Support

Yes. Every tool on UtilityBox is 100% free. There are no paid tiers, premium features, or paywalls. No credit card is ever required.

No account, sign-up, or email address is required. Open any tool and start using it immediately in your browser.

Yes. UtilityBox is a Progressive Web App (PWA). In Chrome, Edge, and Safari you'll see an install prompt, or use the browser menu to "Add to Home Screen" / "Install App" for quick access.

UtilityBox works on Google Chrome, Mozilla Firefox, Microsoft Edge, Safari (iOS and macOS), and Opera. JavaScript must be enabled. Most tools also work on mobile browsers.

Sensitive tools — password generator, text encryption, PDF processing, JSON/SQL formatter, regex tester, case converter — run entirely in your browser. Your input is never sent to any server. The currency converter fetches public exchange rate data from a third-party API; no personal data is transmitted. Quick Notes data is stored only in your own browser's localStorage.

No. The AES-GCM text encryption and decryption runs 100% in your browser using the Web Crypto API. Neither your plaintext, your passphrase, nor the ciphertext ever leaves your device.

No. The password generator uses the browser's cryptographically secure random number generator. Generated passwords are never logged, stored, or transmitted anywhere.

Rates are fetched from a live exchange rate API and are typically delayed by a few hours. They are accurate for reference and estimation but should not be used for formal financial transactions or legal documents.

The QR code tool uses a local library as its primary engine and a CDN fallback. If both fail, check your internet connection and retry. Also ensure the input field is not empty — a QR code cannot be generated without content to encode.

Some FM radio stations block browser-based playback due to CORS restrictions or stream availability issues. Try selecting a different station from the preset list, or paste a direct MP3 or AAC stream URL into the Custom URL field in the radio player.

Most tools (calculator, age calculator, password generator, case converter, regex tester, JSON formatter, text encryption, EMI calculator, budget box, split expense, cron generator, encoder/decoder) work fully offline once the page loads. Tools depending on live data (currency converter, FM radio) require an active internet connection.

The standard EMI formula is: EMI = P × R × (1+R)^N ÷ ((1+R)^N − 1), where P is the principal amount, R is the monthly interest rate (annual rate ÷ 12 ÷ 100), and N is the loan tenure in months. The tool shows monthly EMI, total repayment, total interest, and a full amortisation schedule.

Currently UtilityBox shows one tool at a time in the workspace view. To work with multiple tools simultaneously, open UtilityBox in separate browser tabs and navigate to different tools in each tab.