Best Waterproof Security Boxes

Looking for the best waterproof security boxes to keep your valuables safe? We’ve tested and reviewed the top 10 options, offering you a curated list of durable, secure, and easy-to-use choices to protect your important items from water damage and theft.

Keeping your valuables safe is a top priority. Whether it’s important documents, cash, or personal items, a waterproof security box ensures they stay protected from water damage and theft. With so many options available, finding the perfect one can feel overwhelming.

We’ve tested and reviewed the best waterproof security boxes to make your choice easy. From compact lockboxes to large fireproof safes, we’ve got you covered. Discover the top picks that combine durability, security, and ease of use to keep your belongings safe and sound.

List of Top 10 Waterproof Security Boxes

Image Title Best For Price
SentrySafe Black Fireproof and Waterproof Safe, File Folder and Document Box with Key Lock, Ex. 14.3 x 15.5 x 13.5 inches, HD4100 SentrySafe Black Fireproof and Waterproof Safe, File Folder and Document Box with Key Lock, Ex. 14.3 x 15.5 x 13.5 inches, HD4100

This fireproof and waterproof safe is perfect for anyone who wants to protect important papers and valuables. It keeps documents, USBs, and small items safe from fire and floods.

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SentrySafe Fireproof and Waterproof Lock Box with Key Lock, File Safe with Carrying Handles for Documents, 0.66 Cubic Feet, 14.1 x 16.6 x 13.8 Inches, FHW40100 SentrySafe Fireproof and Waterproof Lock Box with Key Lock, File Safe with Carrying Handles for Documents, 0.66 Cubic Feet, 14.1 x 16.6 x 13.8 Inches, FHW40100

This safe is perfect for anyone who wants simple, strong, and reliable protection for important papers and small items. It’s great for people who need fireproof and waterproof security they can trust.

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27.56 27.56″H Steel Safe Box, 6.0 Cuft Home Safes with Fireproof Waterproof Bag, Digital Security Safes with Programmable Keypad Keys, Smart Alert, Mute Mode, Anti-theft Safety Box for Documents Valuables

This safe box is perfect for anyone who wants to keep important things safe. It’s great for protecting documents, valuables, and personal items from fire, water, and theft.

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SentrySafe Dark Gray Fireproof and Waterproof Safe with Key Lock, Chest Lock Box with Carrying Handle for Travel, 0.28 Cubic Feet, 6.6 x 15.4 x 14.3 Inches, CFW20201 SentrySafe Dark Gray Fireproof and Waterproof Safe with Key Lock, Chest Lock Box with Carrying Handle for Travel, 0.28 Cubic Feet, 6.6 x 15.4 x 14.3 Inches, CFW20201

This safe is perfect for anyone who needs to protect important items like documents, valuables, or digital media. It’s easy to carry and keeps your things safe from fire and water damage.

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GIVERARE Lock Box, 4 Digits Combination Lockbox, Waterproof Outdoor Key Hider for House Key Storage Wall Mount Outside, Resettable Code Safe Security Password Boxes with Mounting Kit-Black GIVERARE Lock Box, 4 Digits Combination Lockbox, Waterproof Outdoor Key Hider for House Key Storage Wall Mount Outside, Resettable Code Safe Security Password Boxes with Mounting Kit-Black

This lock box is perfect for anyone who wants to keep keys safe and easily accessible. It’s great for homeowners, renters, or business owners who need to share access with family, friends, or service providers.

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5.2 Cub Large Fireproof Safes for Home Use, Digital Security Safe Home Safes Fireproof Waterproof with Combination Lock and 3 Removable Shelves, Anti-Theft Fire Safe Box for Document Money Valuables 5.2 Cub Large Fireproof Safes for Home Use, Digital Security Safe Home Safes Fireproof Waterproof with Combination Lock and 3 Removable Shelves, Anti-Theft Fire Safe Box for Document Money Valuables

This fireproof safe is perfect for anyone who wants to keep important things safe. It’s great for homes, offices, or dorms, protecting documents, money, and valuables from fire, water, and theft.

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Key Lock Box for Outside - Sturdy and Durable Lock Box for House Key,5 Key Capacity Lockbox for Keys Outdoor,Waterproof Emergency Spare Key Lockbox with Resettable Code for Home,Garage,Airbnb Key Lock Box for Outside – Sturdy and Durable Lock Box for House Key,5 Key Capacity Lockbox for Keys Outdoor,Waterproof Emergency Spare Key Lockbox with Resettable Code for Home,Garage,Airbnb

This key lock box is perfect for anyone who wants easy, secure access to their home, garage, or Airbnb. It’s great for busy people, families, or hosts who need to share keys safely.

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YIYITOOLS Fireproof Lock Box with Key and Combination Lock, Fire Safe Document Box, Portable Fireproof Waterproof Safe for Home,Office,Travel, Secure Storage for Documents,Jewelry,Passport,Cash YIYITOOLS Fireproof Lock Box with Key and Combination Lock, Fire Safe Document Box, Portable Fireproof Waterproof Safe for Home,Office,Travel, Secure Storage for Documents,Jewelry,Passport,Cash

This safe box is perfect for anyone who wants to keep important papers and small valuables protected at home, at work, or on the go. It is great for people who want strong security in a simple, easy way.

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VALINIRT Fireproof and Waterproof Safe, fire safe document box with Sensor light, Portable Lock Box with Key Lock and Ergonomic Handle, 1 Hour at 1700°F, 72 Hours Waterproof VALINIRT Fireproof and Waterproof Safe, fire safe document box with Sensor light, Portable Lock Box with Key Lock and Ergonomic Handle, 1 Hour at 1700°F, 72 Hours Waterproof

This fireproof and waterproof safe is perfect for anyone who wants to protect important items from fire, water, or theft. It’s great for home, office, or travel, keeping documents, electronics, and valuables safe in any situation.

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1.3 Cuft Safe Box Fireproof Waterproof, Digital Security Safes for Home Use Fire and Water Proof with Combination Lock, Alarm System and Removable Shelf, Anti-Theft Document Safes For Money, Jewelry 1.3 Cuft Safe Box Fireproof Waterproof, Digital Security Safes for Home Use Fire and Water Proof with Combination Lock, Alarm System and Removable Shelf, Anti-Theft Document Safes For Money, Jewelry

This safe box is perfect for anyone who wants to keep valuables secure at home. It’s great for storing cash, jewelry, documents, or small items you want to protect from theft, fire, or water damage.

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Detailed Reviews

Discover the top 10 waterproof security boxes carefully selected for ultimate protection and peace of mind. Each product is expert-reviewed and customer-approved, ensuring reliable performance and great value. Whether you need fireproof, portable, or high-capacity options, this guide has you covered. Find the perfect waterproof security box to keep your valuables safe and secure.

1. SentrySafe Black Fireproof and Waterproof Safe, File Folder and Document Box with Key Lock, Ex. 14.3 x 15.5 x 13.5 inches, HD4100

SentrySafe Black Fireproof and Waterproof Safe, File Folder and Document Box with Key Lock, Ex. 14.3 x 15.5 x 13.5 inches, HD4100

The SentrySafe Black Fireproof and Waterproof Safe keeps your important items safe. It protects documents, valuables, DVDs, and USBs from fire and water damage. Its key lock adds extra security for peace of mind.

This document organizer has built-in straps for easy storage. It’s black and fits file folders perfectly. Its size is 14.3 x 15.5 x 13.5 inches, making it compact yet spacious.

Pros Cons
  • Fireproof for 30 minutes at 1550°F, protects valuables.
  • Waterproof for 72 hours in 8 inches of water, flood-proof.
  • Key lock secures documents with 2 included keys.
  • Built-in straps organize passports, IDs, and certificates.
  • No digital lock means you can’t use a code for quick access.
  • Heavy design might make it hard to move around easily.
  • Limited size may not fit larger items or many documents.

Perfect For:

This fireproof and waterproof safe is perfect for anyone who wants to protect important papers and valuables. It keeps documents, USBs, and small items safe from fire and floods.

Ready to Purchase?

2. SentrySafe Fireproof and Waterproof Lock Box with Key Lock, File Safe with Carrying Handles for Documents, 0.66 Cubic Feet, 14.1 x 16.6 x 13.8 Inches, FHW40100

SentrySafe Fireproof and Waterproof Lock Box with Key Lock, File Safe with Carrying Handles for Documents, 0.66 Cubic Feet, 14.1 x 16.6 x 13.8 Inches, FHW40100

The SentrySafe Fireproof and Waterproof Lock Box keeps your important documents and valuables safe. It’s UL Classified to protect against fire and ETL Verified to withstand floods.

This dark gray safe has a sleek look and built-in handles for easy carrying. It holds letter-size files and includes a key lock for extra security.

With 0.66 cubic feet of space, it’s perfect for passports, social security cards, and birth certificates. It weighs 41 pounds and measures 14.1 x 16.6 x 13.8 inches.

Pros Cons
  • Fireproof for 30 minutes at 1550°F—protects valuables from flames.
  • Waterproof for 72 hours—keeps documents safe during floods.
  • Sleek dark gray design—fits any professional or home space.
  • Easy to carry with built-in handles—perfect for quick transport.
  • Heavy at 41 pounds, making it hard to move around.
  • No digital lock, relies on basic key system for security.
  • Limited interior space for larger items or bulky documents.

Perfect For:

This safe is perfect for anyone who wants simple, strong, and reliable protection for important papers and small items. It’s great for people who need fireproof and waterproof security they can trust.

Ready to Purchase?

3. 27.56″H Steel Safe Box, 6.0 Cuft Home Safes with Fireproof Waterproof Bag, Digital Security Safes with Programmable Keypad Keys, Smart Alert, Mute Mode, Anti-theft Safety Box for Documents Valuables

27.56

This 27.56″H Steel Safe Box is a heavy-duty home safe with 6.0 cubic feet of storage. It’s perfect for keeping important items like documents, valuables, and keys safe and secure. Its large size makes it ideal for home use.

The safe is made of sturdy cold-rolled steel with a thickened door and locking bolts. It’s impact-resistant and pry-resistant, offering reliable protection. A fireproof and waterproof bag adds extra safety for your belongings.

It features a digital keypad, alarm system, and silent mode. You can mount it to the wall or floor for added security. Removable shelves and LED lights make it easy to organize and access your items.

Pros Cons
  • Extra-large space for all your valuables and documents.
  • Steel build with thick door for maximum security.
  • Fireproof and waterproof bag for double protection.
  • Silent mode and alarm system for peace of mind.
  • Heavy and hard to move without help.
  • No built-in battery backup for power outages.
  • Large size may not fit in small spaces.

Perfect For:

This safe box is perfect for anyone who wants to keep important things safe. It’s great for protecting documents, valuables, and personal items from fire, water, and theft.

Ready to Purchase?

4. SentrySafe Dark Gray Fireproof and Waterproof Safe with Key Lock, Chest Lock Box with Carrying Handle for Travel, 0.28 Cubic Feet, 6.6 x 15.4 x 14.3 Inches, CFW20201

SentrySafe Dark Gray Fireproof and Waterproof Safe with Key Lock, Chest Lock Box with Carrying Handle for Travel, 0.28 Cubic Feet, 6.6 x 15.4 x 14.3 Inches, CFW20201

The SentrySafe Dark Gray Safe keeps your valuables safe. It’s fireproof and waterproof, so your items stay protected.

It has a key lock for privacy, a handle for easy carrying, and space for documents and digital media. Simple, strong, and ready to go.

Pros Cons
  • Fireproof and waterproof design keeps your valuables safe.
  • Key lock ensures privacy and security for documents.
  • Easy to carry with a convenient handle for travel.
  • Protects digital media like CDs, DVDs, and hard drives.
  • No digital lock means you can’t use codes for quick access.
  • Small size limits storage for larger items or bulky valuables.
  • Key lock can be lost, leaving your items vulnerable.

Perfect For:

This safe is perfect for anyone who needs to protect important items like documents, valuables, or digital media. It’s easy to carry and keeps your things safe from fire and water damage.

Ready to Purchase?

5. GIVERARE Lock Box, 4 Digits Combination Lockbox, Waterproof Outdoor Key Hider for House Key Storage Wall Mount Outside, Resettable Code Safe Security Password Boxes with Mounting Kit-Black

GIVERARE Lock Box, 4 Digits Combination Lockbox, Waterproof Outdoor Key Hider for House Key Storage Wall Mount Outside, Resettable Code Safe Security Password Boxes with Mounting Kit-Black

The GIVERARE Lock Box keeps your keys safe with a 4-digit combination. It’s easy to use and reset, so no more hiding keys! This lockbox is strong and waterproof, perfect for outdoor use.

It’s built tough with thick ABS material and a sturdy lock. The box won’t rust or break, even in bad weather. It’s safe from tools like hammers or saws.

You can fit up to 4 keys inside, and it’s easy to mount anywhere. The lockbox works well for years without freezing. It’s great for sharing keys with family or friends.

Pros Cons
  • 10,000 combos for top-notch key security.
  • Rust-proof, sturdy build resists hammering and cutting.
  • Holds up to 4 keys safely, dust-proof and compact.
  • Quick, easy install on any solid surface.
  • Unbreakable design for long-term outdoor use.
  • Small space may not fit big keys
  • Code wheel can feel a bit stiff
  • Wall mount needs a solid spot

Perfect For:

This lock box is perfect for anyone who wants to keep keys safe and easily accessible. It’s great for homeowners, renters, or business owners who need to share access with family, friends, or service providers.

Ready to Purchase?

6. 5.2 Cub Large Fireproof Safes for Home Use, Digital Security Safe Home Safes Fireproof Waterproof with Combination Lock and 3 Removable Shelves, Anti-Theft Fire Safe Box for Document Money Valuables

5.2 Cub Large Fireproof Safes for Home Use, Digital Security Safe Home Safes Fireproof Waterproof with Combination Lock and 3 Removable Shelves, Anti-Theft Fire Safe Box for Document Money Valuables

Keep your valuables safe with this large fireproof safe. It’s perfect for home, office, or dorm. Protect documents, cash, and more from theft and damage.

The safe is made of solid steel with strong locks and a pry-resistant door. It has a scratch-resistant finish to keep it looking new.

Unlock it with a digital keypad, emergency keys, or external battery power. It also has an alarm system and silent mode for extra security and convenience.

Pros Cons
  • Large capacity protects all your valuables in one secure place.
  • Solid steel and anti-theft design keeps items safe from intruders.
  • Three unlocking methods ensure easy access in any situation.
  • Alarm system deters unauthorized access and password guessing.
  • Removable shelves and LED light for organized, hassle-free use.
  • Heavy and hard to move without help.
  • No fire rating specified for protection duration.
  • Keys must be stored separately, adding extra steps.

Perfect For:

This fireproof safe is perfect for anyone who wants to keep important things safe. It’s great for homes, offices, or dorms, protecting documents, money, and valuables from fire, water, and theft.

Ready to Purchase?

7. Key Lock Box for Outside – Sturdy and Durable Lock Box for House Key,5 Key Capacity Lockbox for Keys Outdoor,Waterproof Emergency Spare Key Lockbox with Resettable Code for Home,Garage,Airbnb

Key Lock Box for Outside - Sturdy and Durable Lock Box for House Key,5 Key Capacity Lockbox for Keys Outdoor,Waterproof Emergency Spare Key Lockbox with Resettable Code for Home,Garage,Airbnb

Keep your keys safe with this sturdy key lock box. Made from high-strength aluminum, it resists hammering, sawing, and rust. Perfect for outdoor use, it’s waterproof and dustproof.

Easily share keys with friends, realtors, or babysitters. Set a custom code and change it anytime for extra security.

Holds up to 7 keys or small items like car keys. Easy to install and use—no power needed. Great for homes, garages, or businesses.

Pros Cons
  • Sturdy aluminum resists hammering, sawing, and prying.
  • Holds 7+ keys and small items for easy access.
  • Resettable code keeps keys safe and secure.
  • Waterproof and rust-proof for outdoor use.
  • No smart features, lacks remote access or notifications.
  • Code reset requires physical access, not convenient for all.
  • Bulkier design, may stand out on doorways.

Perfect For:

This key lock box is perfect for anyone who wants easy, secure access to their home, garage, or Airbnb. It’s great for busy people, families, or hosts who need to share keys safely.

Ready to Purchase?

8. YIYITOOLS Fireproof Lock Box with Key and Combination Lock, Fire Safe Document Box, Portable Fireproof Waterproof Safe for Home,Office,Travel, Secure Storage for Documents,Jewelry,Passport,Cash

YIYITOOLS Fireproof Lock Box with Key and Combination Lock, Fire Safe Document Box, Portable Fireproof Waterproof Safe for Home,Office,Travel, Secure Storage for Documents,Jewelry,Passport,Cash

Protect your valuables with the YIYITOOLS Fireproof Lock Box. It keeps items safe from fire, water, and humidity. The double steel build ensures long-lasting use.

This safe offers dual lock options. Use a key or set a passcode for extra security. Its scratch-resistant design stays in great shape.

With spacious storage, it fits documents, jewelry, and more. Perfect for home, office, or travel, it’s easy to carry and store.

Pros Cons
  • Fireproof and waterproof protection for your valuables.
  • Dual locks for maximum security and flexible access.
  • Durable, scratch-resistant design built to last.
  • Spacious storage for documents and valuables.
  • Portable and versatile for home, office, or travel.
  • No built-in handle for easy carrying.
  • Limited size may not fit larger items.
  • Combination lock can be hard to reset.

Perfect For:

This safe box is perfect for anyone who wants to keep important papers and small valuables protected at home, at work, or on the go. It is great for people who want strong security in a simple, easy way.

Ready to Purchase?

9. VALINIRT Fireproof and Waterproof Safe, fire safe document box with Sensor light, Portable Lock Box with Key Lock and Ergonomic Handle, 1 Hour at 1700°F, 72 Hours Waterproof

VALINIRT Fireproof and Waterproof Safe, fire safe document box with Sensor light, Portable Lock Box with Key Lock and Ergonomic Handle, 1 Hour at 1700°F, 72 Hours Waterproof

The VALINIRT Fireproof and Waterproof Safe keeps your valuables safe in extreme conditions. It protects against fire for 1 hour at 1700°F and stays waterproof for 72 hours even when fully submerged.

This portable safe is lightweight and easy to carry, perfect for home, office, or travel. It has a secure key lock, spacious interior, and a comfort-grip handle for convenient use.

Pros Cons
  • Fireproof for 1 hour at 1700°F, protects valuables.
  • Waterproof for 72 hours, even when fully submerged.
  • Portable and lightweight, perfect for home or travel.
  • Spacious interior, fits documents, electronics, and more.
  • Secure key lock with comfort-grip handle for easy transport.
  • Heavy for long walks
  • Key lock can be easy to misplace
  • Limited space for large items

Perfect For:

This fireproof and waterproof safe is perfect for anyone who wants to protect important items from fire, water, or theft. It’s great for home, office, or travel, keeping documents, electronics, and valuables safe in any situation.

Ready to Purchase?

10. 1.3 Cuft Safe Box Fireproof Waterproof, Digital Security Safes for Home Use Fire and Water Proof with Combination Lock, Alarm System and Removable Shelf, Anti-Theft Document Safes For Money, Jewelry

1.3 Cuft Safe Box Fireproof Waterproof, Digital Security Safes for Home Use Fire and Water Proof with Combination Lock, Alarm System and Removable Shelf, Anti-Theft Document Safes For Money, Jewelry

Keep your valuables safe with this 1.3 Cuft Safe Box. It’s fireproof, waterproof, and pry-proof, made from strong alloy steel. The combination lock and alarm system add extra security for your peace of mind.

The removable shelf and LED light make it easy to organize and find items. You can mount it to the wall or floor for added protection against theft.

Pros Cons
  • Sturdy, pry-proof design keeps valuables safe from theft and damage.
  • Compact size fits easily in drawers, cabinets, or bedside tables.
  • Dual unlocking methods offer convenience and emergency access.
  • Alarm system alerts you to unauthorized access attempts.
  • Removable shelf and LED light organize and locate items effortlessly.
  • Small size limits storage for larger items.
  • No fire rating specified for protection duration.
  • Keys must be kept separately, adding hassle.

Perfect For:

This safe box is perfect for anyone who wants to keep valuables secure at home. It’s great for storing cash, jewelry, documents, or small items you want to protect from theft, fire, or water damage.

Ready to Purchase?

Buying Guide

Keeping your valuables safe is easy with the right waterproof security box. Whether for home, office, or travel, these boxes protect against water damage and theft. We’ve tested the best options to help you choose.

Factors to Consider When Buying a Waterproof Security Box:
– Size: Pick a box that fits your important items, like documents or cash. Larger boxes are great for home use, while smaller ones are perfect for travel.
– Material: Look for sturdy materials like steel or ABS plastic for durability and water resistance.
– Lock Type: Choose between key locks, combination locks, or digital keypads based on your security needs and ease of use.
– Waterproof Rating: Ensure the box can handle floods or submersion for long periods if needed.
– Fireproof Feature: Some boxes protect against fire, adding extra safety for documents and valuables.
– Portability: If you travel, pick a lightweight box with handles for easy carrying.
– Mounting Options: For home use, consider boxes that can be mounted to walls or floors for added security.
– Storage Features: Look for removable shelves or organizers to keep items neat and accessible.
– Price: Balance cost with features to find the best value for your needs.

With these tips, you’ll find the perfect waterproof security box to keep your belongings safe and sound.