Password Generator | html-tools.net

Generate cryptographically secure random passwords instantly in your browser.

Generated Password

Password Length 16 characters

Calculated Entropy 0 bits

Strength Rating Calculating…

Configuration & Character Sets

Password Length

chars

Uppercase Letters A, B, C, D…

Lowercase Letters a, b, c, d…

Numbers 0, 1, 2, 3…

Special Symbols !@#$%^&*()_+-=…

Exclude Ambiguous / Similar Characters Removes easily confused characters: i, l, 1, L, o, 0, O

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How to Generate Secure Passwords in Code

Use these implementation examples to generate cryptographically safe passwords in your applications:

const crypto = require('crypto');

function generateSecurePassword(length = 16) {
    const charset = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789!@#$%^&*()_+-=";
    let password = "";
    const randomValues = new Uint32Array(length);
    crypto.randomFillSync(randomValues);

    for (let i = 0; i < length; i++) {
        password += charset[randomValues[i] % charset.length];
    }
    return password;
}

console.log(generateSecurePassword(16));

import secrets
import string

def generate_secure_password(length=16):
    alphabet = string.ascii_letters + string.digits + "!@#$%^&*()_+-="
    password = ''.join(secrets.choice(alphabet) for _ in range(length))
    return password

print(generate_secure_password(16))

<?php
function generateSecurePassword($length = 16) {
    $chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789!@#$%^&*()_+-=';
    $password = '';
    $max = strlen($chars) - 1;
    
    for ($i = 0; $i < $length; $i++) {
        $password .= $chars[random_int(0, $max)];
    }
    return $password;
}

echo generateSecurePassword(16);
?>

# Linux / macOS OpenSSL command
openssl rand -base64 24 | tr -dc 'a-zA-Z0-9!@#$%^&*' | head -c 16; echo

# Or using /dev/urandom
tr -dc 'A-Za-z0-9!@#$%^&*' < /dev/urandom | head -c 16; echo

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