One of the main choices you’ll have to make when buying a lock is your preferred unlocking mechanism. There are many traditional keyed locks, as well as combination locks that use both numbers and letters. You can even find high-tech locks that unlock via your fingerprint or Bluetooth on your phone—though these are more expensive.  No matter what you need to secure, here are the best locks for the job. Master Lock is one of the leading padlock brands, and this model is one of your best options for an all-purpose combination lock. It has a 2-inch-wide lock body and a 1-inch hardened steel shackle that resists cutting for added security. This lock opens via a four-digit code, and what’s great is that you get to choose the combination yourself, ensuring it’s something you’ll remember. The combination change tool is included, allowing you to change the code down the line if needed. This Master Lock padlock can be used both indoors and outside, making it a great choice for lockers, gates, sheds, storage units, and more. Price at time of publish: $14 These lightweight locks have side windows for easy combination viewing, and they have a 0.75-inch shackle that’s ideal for lockers, toolboxes, sheds, and more. Plus, they’re constructed from a durable zinc alloy with a steel shackle, helping to deter theft. Price at time of publish: $13 The whole padlock is made from hardened solid steel and features an oversized 2.5-inch shackle useful for large applications. The lock has a double deadbolt locking mechanism for greater strength, and its six-pin brass cylinder helps to resist picking, so you can rest assured your belongings are safe. Overall, Schlage padlocks are a high-security choice for indoor and outdoor uses—just don’t lose the keys. Price at time of publish: $70 Its functionality doesn’t end there. The igloohome Smart Padlock allows you to create and send PIN codes to guests for easy access. You can select between one-time, recurring, or permanent PINs, which recipients can punch into the number pads. It is a great choice for Airbnbs or other rentals; you can send guests a code that expires after their stay. The smart padlock offers several advanced security features, including lockout mode, automatic relocking, and an emergency jumpstart. Price at time of publish: $130 The round lock comes in several colors (selected randomly upon shipment) and has four rotating dials, a metal body, and a hardened steel shackle. It’s only recommended for indoor use. The unit is a little over 3 inches long with a 0.25-inch shackle. Price at time of publish: $11 These inexpensive locks have a metal body, a hardened 0.75-inch long steel shackle, and an anti-shim locking mechanism. Each lock comes with a preset three-digit combination that can’t be changed. You enter each number by spinning the dial in alternating directions. While these dial locks may not be high-security, they’re a classic choice for school or sports lockers, as well as other small uses around your home, such as locking cabinets or sheds. Price at time of publish: $6

Location

Where will you be using your lock? In particular, you’ll want to consider whether it will be inside or outside, as some locks are not weatherproof and may rust or otherwise deteriorate when exposed to harsh conditions. 

Durability

Locks come in varying degrees of durability and security. The thicker the shackle, the tougher it will be for someone to cut through. However, more durable, heavy-duty locks often cost more than inexpensive, lightweight locks. If you’re protecting something valuable, you may want to spend a little extra for a better lock. But, if you’re locking a locker, for instance, a budget option may work just fine.