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Password Expiry Calculator

Calculate password expiry dates based on your security policy and get alerts for expiring passwords.

Status
Active
2026-09-22
Expiry Date
0
Days Since Change
89
Days Until Expiry

About this tool

Password expiry policies are critical for organizational security, helping prevent unauthorized access by forcing regular credential updates. The Password Expiry Calculator makes it simple to determine when passwords will expire based on your security policy settings. Whether you're managing a team's compliance requirements or planning your own password rotation schedule, this tool eliminates manual date calculations and ensures you never miss an expiration deadline.

To use the calculator, enter your password creation date and specify your organization's expiry policy (commonly 30, 60, 90, or 180 days). The tool instantly computes the expiration date and displays how many days remain until the password must be changed. You can also enable alerts to receive notifications as the expiry date approaches, helping you stay proactive rather than reactive about password management.

This tool is especially valuable for system administrators, IT managers, and security-conscious professionals who oversee password policies across multiple users or systems. By automating expiry calculations, it reduces human error and ensures consistent compliance with security standards. Keep in mind that actual password expiry enforcement depends on your system's authentication implementation—this calculator provides guidance and planning support.

Frequently Asked Questions

Code Implementation

from datetime import datetime, timedelta

def calculate_password_expiry(
    last_changed: datetime,
    policy_days: int,
    warn_days: int = 14
) -> dict:
    """Calculate password expiry status."""
    expiry_date = last_changed + timedelta(days=policy_days)
    now = datetime.now()
    days_until_expiry = (expiry_date - now).days
    days_since_change = (now - last_changed).days
    is_expired = now >= expiry_date
    is_warning = not is_expired and days_until_expiry <= warn_days

    if is_expired:
        status = "EXPIRED"
    elif is_warning:
        status = "EXPIRING_SOON"
    else:
        status = "ACTIVE"

    return {
        "last_changed": last_changed.strftime("%Y-%m-%d"),
        "expiry_date": expiry_date.strftime("%Y-%m-%d"),
        "days_since_change": days_since_change,
        "days_until_expiry": max(0, days_until_expiry),
        "is_expired": is_expired,
        "status": status,
        "policy_days": policy_days
    }

# Example
result = calculate_password_expiry(
    last_changed=datetime(2024, 1, 1),
    policy_days=90,
    warn_days=14
)
for key, value in result.items():
    print(f"{key}: {value}")

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