When managing CCTV or DVR/NVR surveillance systems, one of the most common challenges is knowing exactly how many days of recordings are available. Storage devices may skip days due to motion recording, power issues, or manual deletion, which makes it hard to track the true recording duration.
CCTV Recording Days Calculator
Calculate actual recorded days by excluding missing recording dates.
More Tools: Online Tools for CCTV Security Systems
Ever looked at your DVR or NVR playback and wondered, "How many days of actual footage do I really have?"
It’s rarely a simple answer. Between motion-detection-only settings, planned storage overwrites, and unexpected system gaps, the advertised "30 days of recording" seldom means 30 complete, consecutive days of footage. Manually counting days on a calendar, especially while trying to skip specific dates or weekends, is tedious, time-consuming, and frustratingly prone to error.
Our free CCTV Recording Days Calculator is a simple yet powerful online tool built to eliminate the guesswork and give you a precise, instant answer.
What This Calculator Does for You
This tool is designed to provide a clear and accurate audit of your video storage. By simply providing three pieces of information—a start date, an end date, and any days with missing footage—you get an immediate, easy-to-understand breakdown:
- ✅ Total Period (in days): The full calendar duration between your chosen start and end date.
- ✅ Missing Days: The total number of specific days you selected that are unavailable or have no recordings.
- ✅ Actual Recording Days: The final, critical number. This is the real quantity of days your DVR/NVR has successfully stored footage within that period.

🔧 How to Use the Calculator: A Simple 4-Step Guide
We designed the interface to be as simple as possible.
- Select Start Date: Choose the earliest date of the recording period you wish to check.
- Select End Date: Choose the final date you want to include in your calculation.
- Select Missing Dates: Use the intuitive multi-date calendar. Simply click to highlight any individual days within your selected range that are missing from your recording history (e.g., days with no footage, system-off days, or holidays).
- Click Calculate: The calculator will instantly process the information and display your results.
You'll also find a Reset Option to clear all fields with a single click and start a new calculation.
📌 Why This Tool is an Essential Utility
This calculator is more than just a convenience; it's a vital tool for anyone managing a security system.
- Verify Storage & Compliance: Quickly confirm if your NVR/DVR is meeting its advertised storage capacity. This is crucial for security audits, insurance purposes, or any business-compliance requirements for data retention.
- Instantly Identify Recording Gaps: Easily quantify the impact of motion-only recording settings or identify potential technical faults. Knowing you're "missing" 8 days out of 30 gives you actionable data to adjust settings or check hardware.
- Eliminate Manual Errors: Stop counting on your fingers or a physical calendar. This tool saves valuable time and ensures your count is 100% accurate, every time.
🛠️ Key Features
- Intuitive Multi-Date Selection: The core of the tool. Our calendar allows you to easily click and select multiple, non-consecutive "missing" days without any hassle.
- Instant & Accurate Results: No loading, no spreadsheets. You get the numbers you need the moment you click "Calculate."
- Clean, Mobile-Friendly Design: Works perfectly on any device. Use it on your desktop computer in the control room, on your tablet while inspecting hardware, or on your smartphone.
- No Software Required: As a browser-based tool, there is nothing to download or install. It’s always available when you need it.
Final Thoughts
For security professionals, business owners, and even diligent homeowners, knowing your true recording history is critical. It's essential for pulling accurate footage for an investigation, performing internal audits, or simply having peace of mind.
This free CCTV Recording Days Calculator replaces confusion with clarity, allowing you to manage and audit your security footage with confidence.
👉 Try the free calculator above and get a precise count in seconds.