Runs fully in your browser. Inputs stay on your device. See recent fixes on changelog.
OTP Generator
Generate one-time passwords with configurable length and type.
FreeRuns in browserotp generatorone time password
6
Cmd/Ctrl+Enter Primary actionCmd/Ctrl+Shift+L Load sampleCmd/Ctrl+Shift+X Clear/resetCmd/Ctrl+Shift+C Copy result
About OTP Generator
Generate one-time passwords with configurable length and type. Generate one-time passwords online for free. Create numeric, alphanumeric, or hexadecimal OTP codes with configurable length and generation history. Produces high-quality output using configurable parameters and the browser's native random number APIs. Includes options for customizing format, length, and character sets. Everything runs client-side in your browser for maximum speed and privacy — no data is sent to any server, and no signup is required.
Related tools: TOTP Code Generator, Passphrase Generator, API Key Generator
How to Use OTP Generator
- Configure the options and parameters as needed.
- Click Generate to produce the output.
- Copy or download the generated result.
Frequently Asked Questions
What is OTP Generator?
Generate one-time passwords online for free. Create numeric, alphanumeric, or hexadecimal OTP codes with configurable length and generation history.
Are generated values truly random?
The tool uses the browser's built-in cryptographic random number generator (crypto.getRandomValues) when security matters, and high-quality pseudo-random algorithms for general-purpose generation. This ensures unpredictable, non-repeating output.
Can I customize the output?
Yes, the generator provides controls such as sliders, toggles, and selection menus to fine-tune the output to your exact requirements. Adjust length, character sets, formats, and other parameters before generating.
How are random values generated?
Values are generated entirely in your browser using JavaScript's native APIs. No external service or server call is involved, which means generation is instant and your output is never transmitted anywhere.
Is OTP Generator free to use?
Yes, this generator is free to use with no limits on how many values you can create. No signup or account is needed.
Is my data safe when using OTP Generator?
Yes, all generation happens in your browser. Nothing is sent to a server, and no generated values are stored or tracked.