Updated:21 October 2026
Rank 1-20 of the best Window Locks
Our recommendation Price Customer rating
1. Comparison winner
eSynic 10 Pack Window Safety Locks
eSynic 10 Pack Window Safety Locks
Available immediately
free shipping
  • easy to use with key-operated system to lock and unlock windows securely
  • hassle-free installation with self-drill screws for PVC and UPVC frames
  • child safety feature restricts window opening to prevent accidental falls and ensure security
Our rating
9,9
very good
2. Best value
SAFELON Baby Safety Window Restrictor, 2PCS, White
SAFELON Baby Safety Window Restrictor, 2PCS, White
Available immediately
free shipping
  • quick installation: easily affixed with adhesive without drilling
  • child safety: prevents children from opening windows fully, reducing risks
  • durability: made from robust pc and abs materials for long-lasting use
Our rating
9,8
very good
200+ purchases last month
Yale 8K101 Window Latches 4-Pack White Finish Visi Pack
Yale 8K101 Window Latches 4-Pack White Finish Visi Pack
Available immediately
free shipping
  • easy operation with a key-operated lock and a clenching action that pulls the window to the frame
  • easy installation with a surface-fixed lock that attaches to the window section and fixes around the frame
  • reduces draughts by improving sealing for better insulation and durability
Our rating
9,8
very good
50+ purchases last month
4. Bestseller
eSynic Window Restrictor 10-Pack for UPVC Windows, with Screws and Keys, White
eSynic Window Restrictor 10-Pack for UPVC Windows, with Screws and Keys, White
Available immediately
free shipping
  • Key-operated design for easy removal when needed so you can open the window fully for ventilation
  • Screws included and clear instructions for straightforward installation on UPVC windows
  • Prevents windows from opening too far to create a reliable barrier that helps stop accidental falls and keeps children safe
Our rating
9,8
very good
100+ purchases last month
Keyohome Window Restrictor Locks Pack of 4 for UPVC Windows – Child Safety with Screws and Keys
Keyohome Window Restrictor Locks Pack of 4 for UPVC Windows – Child Safety with Screws and Keys
Available immediately
free shipping
  • easy operation with a lockable mechanism and a removable cable that controls how far the window can open; when the cable is in place the opening distance is limited and removing the cable with the key allows full opening
  • child safety feature limits the window opening to reduce the risk of a child or infant falling out and provides ventilation
  • durable construction using zinc alloy and UPVC that resists rust and withstands significant pressure for long lasting safety
Our rating
9,8
very good
300+ purchases last month
4 Pack UPVC Window Restrictors with Key Cable Lock – Drillable or Self-Adhesive Safety Locks for Doors, Fridges and Cupboards
4 Pack UPVC Window Restrictors with Key Cable Lock – Drillable or Self-Adhesive Safety Locks for Doors, Fridges and Cupboards
Available immediately
free shipping
  • easy operation uses a key to adjust the opening and a removable rope to enable full ventilation
  • easy installation supports drilling or self-adhesive fixing with two screw holes and screws included; the back of the lock has strong adhesive and is supplied with an adhesion promoter and a key, making it quick and straightforward
  • child safety limits how far windows and doors can open to help prevent injuries from falls
Our rating
9,8
very good
300+ purchases last month
XFORT 2 Pack Jammer and Window Locks for uPVC Doors
XFORT 2 Pack Jammer and Window Locks for uPVC Doors
Available immediately
free shipping
  • easy to operate locking sash jammer for windows and doors
  • simple installation on uPVC windows and doors with 1mm and 2mm packers
  • child safety feature prevents children from unlocking windows or doors
Our rating
9,6
very good
8-Pack uPVC Window Restrictor Locks with Keys and Screws for Home, School and Commercial Use
8-Pack uPVC Window Restrictor Locks with Keys and Screws for Home, School and Commercial Use
Available immediately
free shipping
  • easy operation via a universal key for smooth opening and closing
  • easy installation with included screws and the option to use a screwdriver or drill
  • child safety by restricting how far the window opens to reduce risk of accidents and by preventing unauthorised access
Our rating
9,6
very good
XFORT Viper Key-Locking Cable Window Restrictor (White)
XFORT Viper Key-Locking Cable Window Restrictor (White)
Available immediately
free shipping
  • window restrictor with a key lock that limits the opening distance of a window improving safety and security
  • easy installation using fixing screws suitable for multiple substrate types allowing secure fitting on uPVC aluminium timber and metal windows
  • helps prevent child falls by restricting window opening and requires a key to operate enhancing child safety
Our rating
9,6
very good
100+ purchases last month
Yale 8K118 Window Lock, White, Pack of 4
Yale 8K118 Window Lock, White, Pack of 4
Available immediately
free shipping
  • easy to use with surface fixed to window for convenience
  • simple to install with easy fitting
  • feature a key lock for added child safety
Our rating
9,5
very good
BABYGO Window Restrictor - Self-Adhesive Child Safety Lock for UPVC, Wood, Metal & Aluminium Windows (White)
BABYGO Window Restrictor - Self-Adhesive Child Safety Lock for UPVC, Wood, Metal & Aluminium Windows (White)
Available immediately
free shipping
  • easy operation with a simple locking mechanism for quick and straightforward use
  • tool-free installation with no drilling required
  • child safety feature to prevent children from opening the window beyond a safe limit, secured with strong adhesive tape
Our rating
9,5
very good
300+ purchases last month
Sterling LWL101 Wooden Window Lock
Sterling LWL101 Wooden Window Lock
Available immediately
free shipping
  • easy to operate: secures with a key for straightforward locking
  • easy to fit: compatible with hinged wooden windows
  • child safety: locks window tight to frame, preventing accidental opening
Our rating
9,3
good
Sash Jammer Blocker 4 Pack for UPVC Windows and Doors (White)
Sash Jammer Blocker 4 Pack for UPVC Windows and Doors (White)
Available immediately
free shipping
  • easy to operate by twisting the locking arm to lock or release the window sash
  • easy to install using the included fixing screws and the provided installation instructions; the package includes four window locks and matching screws
  • helps protect children and pets by limiting how far the window can open
Our rating
9,3
good
500+ purchases last month
Aosite Window Restrictor Locks, 2pcs
Aosite Window Restrictor Locks, 2pcs
Available immediately
free shipping
  • easy to operate with adhesive installation and no need for keys or passwords
  • childproof design restricts window and door openings to prevent accidents
  • sturdy and durable with high-quality materials that withstand outdoor conditions
Our rating
9,3
good
100+ purchases last month
Yale 8K101 Window Latch White
Yale 8K101 Window Latch White
Available immediately
free shipping
  • easy to operate with a key
  • install easily by fixing the lock onto the window section and around the frame
  • designed to enhance durability by reducing draughts
Our rating
9,1
good
2-Pack Window Locks with Screws – Adjustable Safety Restrictors for Windows, Doors, Cabinets and Drawers
2-Pack Window Locks with Screws – Adjustable Safety Restrictors for Windows, Doors, Cabinets and Drawers
Available immediately
free shipping
  • easy operation: the double switch design requires pressing the button to activate the lock
  • easy installation: two installation methods are available: adhesive or screw, ensure the surface is clean and dry before applying
  • child safety: operation requires pressing the button to open, reducing the risk of children accidentally opening the window
Our rating
9,0
good
200+ purchases last month
2-Pack Window Locks with 4 Keys – Punch-Free UPVC Window Restrictors, Child Safety for Doors, Drawers, Washing Machines and Fridges
2-Pack Window Locks with 4 Keys – Punch-Free UPVC Window Restrictors, Child Safety for Doors, Drawers, Washing Machines and Fridges
Available immediately
free shipping
  • Self-adhesive mounting allows quick, drill-free installation on clean, smooth surfaces
  • Prevents children from opening fridge or cabinet doors to reduce spills and the risk of injury
  • Durable plastic and stainless steel construction with two keys included
Our rating
8,9
good
AOSITE Window Safety Lock 2-Pack
AOSITE Window Safety Lock 2-Pack
Available immediately
free shipping
  • easy to install with strong self adhesive and screw options for double safety
  • includes child safety mechanism to restrict window and door opening and allow airflow
  • durable metal heads and high tension steel cables withstand significant force
Our rating
8,9
good
300+ purchases last month
3-Piece UPVC Window Locks with Adjustable Self-Adhesive Sliding Safety Restrictors (Screws Included)
3-Piece UPVC Window Locks with Adjustable Self-Adhesive Sliding Safety Restrictors (Screws Included)
Available immediately
free shipping
  • easy operation enables quick locking and unlocking with a side button and sliding connector, no keys required for daily use
  • easy installation uses a tool-free self-adhesive mounting method with no drilling required, simply position, peel off the backing film and press firmly onto a clean dry surface
  • child safety helps to keep children safe by limiting access to refrigerators, cabinets and windows
Our rating
8,6
good
Alieem Window Safety Lock (2 Pack) - Self-Adhesive UPVC Restrictor with Key, No Drilling, Childproof Cable Lock
Alieem Window Safety Lock (2 Pack) - Self-Adhesive UPVC Restrictor with Key, No Drilling, Childproof Cable Lock
Available immediately
free shipping
  • easy operation the window lock restricts how far the window can open to reduce fall risk while allowing fresh air
  • easy installation simple to install with strong self adhesive backing and screw holes for double safety ensuring the window can only be opened with the supplied key
  • child safety the lock prevents curious children or pets from opening the window without adult supervision
Our rating
8,5
good

Similar Window Lock comparisons

Window Locks buying guide: How to choose the right product from the above Window Locks test or comparison

Understanding Window Locks: Why Every Home Needs Them

The Importance of Window Locks

Every homeowner wants peace of mind, and installing window locks is a crucial step towards achieving a secure environment. Think of your home as a protective bubble; window locks are the first line of defence against intruders. They not only deter potential theft but also keep your loved ones safe. Windows are often the most vulnerable points in a house, making locks essential, especially for ground floor levels. When we lock our windows, we’re not just safeguarding valuables, but we’re also ensuring the safety of family members. Consider the potential dangers of leaving windows unlocked, especially when leaving home or at night.

Security Beyond Intruders

Window locks offer more than just protection against burglars. They also provide security against falls, particularly for children. By using locks, we can prevent young children from opening windows easily, reducing the risk of accidents. Furthermore, some window locks come with child safety features, giving us an added layer of reassurance. This way, we’re not only protecting our possessions but also ensuring a safe environment for our family.

Types of Window Locks: Choosing the Right One for Your Needs

Common Types of Window Locks

There are several types of window locks to consider, and their effectiveness can vary. First, there are sliding window locks, designed for horizontal windows that slide open. Then, we have sash locks, perfect for double-hung windows. They are simple yet effective. Casement window locks secure hinged windows that open outward, and they often come with additional features like keyed locking mechanisms for enhanced security. For properties in high-risk areas, we might consider installing multi-point locking systems that engage at several points across the window frame, offering superior defence.

Choosing the Right Lock for Your Home

When we look for the right window locks, it’s essential to consider our specific needs. Think about how often we open our windows and the overall size and type of our windows. If we have children, opting for locks that are easy for adults to manage but challenging for little fingers to operate is critical. Also, if your home is in a location that’s prone to break-ins, high-security locks or even window sensors might add an extra layer of protection.

Installing Window Locks: A Step-by-Step Guide

Preparing for Installation

Before we get started with installation, ensure we have all the necessary tools ready. This usually includes a screwdriver, a drill, and the specific window lock we’ve chosen. It’s also a good idea to read the manufacturer’s instructions thoroughly; different types of locks may require slightly different installation methods.

Installation Process Made Simple

Begin by determining where the lock will be placed on the window, making sure it’s at an optimal height for ease of use. Mark the drill holes with a pencil, then carefully drill into the window frame, ensuring not to go too deep. Next, position the lock in place and secure it using screws. Double-check that the lock operates smoothly and fits snugly. If we encounter any issues while installing, it’s always best to consult the instructions or seek help from a professional.

Window Lock Maintenance: Keeping Your Home Secure

Regular Checks Are Essential

To ensure our window locks continue to function effectively, it’s important to conduct regular checks. This means inspecting each lock for signs of wear and tear, corrosion, or any obstructions that might hinder their performance. By doing this, we can catch potential problems early before they compromise our security.

Simple Maintenance Tips

Routine maintenance may involve cleaning the locks to prevent dirt buildup, checking hinges, and applying lubricant to ensure smooth operation. If we notice any screws are loose, tightening them will help maintain a secure fit. For more complex issues, reaching out to a locksmith or professional installer can ensure our security remains intact.

Finding Reliable Retailers

When it comes to purchasing window locks, we recommend looking into both online and local hardware stores. Big-name retailers often offer a wide variety of options, making it easy to compare different types, prices, and features in one visit. Additionally, local hardware stores can provide a more personalised service, with staff often able to offer advice based on specific needs.

Online Shopping for Convenience

Shopping online can be particularly convenient, with many websites offering clear descriptions and customer reviews. This not only allows us to understand more about the product but also gives insight into the experiences of other customers, enabling us to make informed choices about the best window locks for our situation. Whether shopping online or in-store, being well-informed will help us choose the right product to ensure our home remains safe and secure.

Table of contents
  1. Understanding Window Locks: Why Every Home Needs Them
  2. Types of Window Locks: Choosing the Right One for Your Needs
  3. Installing Window Locks: A Step-by-Step Guide
  4. Window Lock Maintenance: Keeping Your Home Secure
  5. Where to Buy Quality Window Locks: Our Recommended Retailers

Overview

1. Comparison winner
eSynic 10 Pack Window Safety Locks
Our rating
9,9
very good
eSynic 10 Pack Window Safety LocksAvailable immediately
2. Best value
SAFELON Baby Safety Window Restrictor, 2PCS, White
Our rating
9,8
very good
SAFELON Baby Safety Window Restrictor, 2PCS, WhiteAvailable immediately
Yale 8K101 Window Latches 4-Pack White Finish Visi Pack
Our rating
9,8
very good
Yale 8K101 Window Latches 4-Pack White Finish Visi PackAvailable immediately
4. Bestseller
eSynic Window Restrictor 10-Pack for UPVC Windows, with Screws and Keys, White
Our rating
9,8
very good
eSynic Window Restrictor 10-Pack for UPVC Windows, with Screws and Keys, WhiteAvailable immediately
Keyohome Window Restrictor Locks Pack of 4 for UPVC Windows – Child Safety with Screws and Keys
Our rating
9,8
very good
Keyohome Window Restrictor Locks Pack of 4 for UPVC Windows – Child Safety with Screws and KeysAvailable immediately
4 Pack UPVC Window Restrictors with Key Cable Lock – Drillable or Self-Adhesive Safety Locks for Doors, Fridges and Cupboards
Our rating
9,8
very good
4 Pack UPVC Window Restrictors with Key Cable Lock – Drillable or Self-Adhesive Safety Locks for Doors, Fridges and CupboardsAvailable immediately
XFORT 2 Pack Jammer and Window Locks for uPVC Doors
Our rating
9,6
very good
XFORT 2 Pack Jammer and Window Locks for uPVC DoorsAvailable immediately
8-Pack uPVC Window Restrictor Locks with Keys and Screws for Home, School and Commercial Use
Our rating
9,6
very good
8-Pack uPVC Window Restrictor Locks with Keys and Screws for Home, School and Commercial UseAvailable immediately
Our product comparisons are:
Always up to date:
At most every 120 days, we update each category with new products and research developments in the top rankings. This ensures that our recommendations are always up to date
Neutral and independent:
Our tests and comparisons are objective and fact-based. Manufacturers have no influence on the ratings. We aim to provide greater transparency in the market, thereby promoting product quality.
Method-driven
In our tests & comparison tables, we only include products that meet our minimum standards. This ensures that you can find the perfect product for your needs from a wide selection.
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