Best External Hard Drives Under $100 (2026)

We selected drives under $100 and ranked them by a value score combining storage-per-dollar, average user rating, USB interface (3.1/3.2 preferred), and manufacturer features like security and portability

This roundup covers portable external hard drives under $100, focused on value, capacity, and compatibility for everyday backup and file transfer. Picks were ranked by a value score that weights storage per dollar, reliability indicators (brand reputation and user ratings), and USB performance standards

Top Picks

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    WD 1TB My Passport external hard drive

    WD 1TB My Passport external hard drive

    WD • ★ 4.5/5 • Mid-Range

    Portable external hard drive with up to 6TB capacity, USB 3.1/3.0 compatibility and ransomware defense software. Users note easy setup and good value, but some report reliability issues

    • ransomware defense software
    • password protection
    • portable 1TB form factor
    Check current price on Amazon →
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    WD 1TB My Passport portable external hard drive

    WD 1TB My Passport portable external hard drive

    WD • ★ 4.5/5 • Mid-Range

    Portable external hard drive with ransomware protection and password security. Includes device management software for backups and broad compatibility. Customers note easy setup and compact size, with mixed opinions on speed

    • ransomware defense
    • password protection
    • backup management software
    Check current price on Amazon →
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    WD 2TB My Passport external hard drive

    WD 2TB My Passport external hard drive

    WD • ★ 4.4/5 • Mid-Range

    Portable external hard drive with backup software and ransomware defense. Useful for storing photos, videos, music, and documents; easy setup noted by many users, though some report reliability issues

    • ransomware defense with backup software
    • password protection
    • large capacity options
    Check current price on Amazon →

Buying Guide

Capacity vs. price

Choose a drive size that matches your needs—1–2TB is common under $100 and balances storage for photos, video, and backups with affordability

Interface and transfer speed

Prefer USB 3.x (USB 3.1/3.2) models for faster transfers on modern PCs and compatibility with USB-C adapters when needed

Reliability and brand track record

Prioritize established HDD makers like WD and Seagate, and consider user ratings as a proxy for real-world reliability

Security features

If you need data protection, look for drives that offer password protection or ransomware-protection software included by the manufacturer

Portability and build

For frequent travel, choose compact, bus-powered portable drives with durable enclosures that work without an external power adapter