CCTV Calculator brings together the calculations and tests you need to design install and maintain camera systems — in one app. Pick the right lens check what each camera will really see size the storage and the UPS test ONVIF devices and plan the network before and after installation.

CAMERA SYSTEM CALCULATIONS
- Storage Calculator — disk capacity for your NVR/DVR. Mix camera types in groups enter a known bitrate account for smart codecs (H.265+/H.264+) and recording hours per day
- Bandwidth Calculator — the bandwidth your recording settings require
- Lens Focal Length Calculator — pick the right lens for your target area
- Camera Viewing Angle
- FOV & DORI Planner — coverage pixel density and the Detect / Observe / Recognise / Identify distances of a camera (EN 62676-4)
- DORI Calculator — how far each DORI level reaches and the lens or resolution needed for a target distance

NETWORK AND WIRELESS CALCULATIONS
- IPv4 Calculator
- IPv6 Calculator
- Free Space Path Loss
- Power Budget Calculator
- System Performance Calculator
- Fresnel Zone
- mW to dBm Calculator

SERVER AND RAID CALCULATIONS
- RAID Calculator — usable space redundancy and fault tolerance for your disk count

POWER
- UPS Calculator — size the UPS and battery for your cameras NVR and network devices and see the runtime for your backup time

TOOLS
- ONVIF Compatibility Test — check login device details and RTSP stream addresses and find ONVIF devices on your network
- Port Forwarding Test
- Ping Test
- Network Discovery — automatically find devices on your network
- WAN Port Scanner
- What is my IP?
- More Network Tools

KNOWLEDGE BASE
- CCTV Default Login Informations
- CCTV Terms and Definitions — current searchable glossary
- Security Assessment of CCTV — common weaknesses and how to fix them
- RJ45 Cable Wiring

Metric and imperial units are supported.

PRO
- Live results: calculations update as you type with quick sliders
- Charts and diagrams: FOV and DORI diagrams pixel preview retention runtime and comparison charts
- Camera groups in the Storage Calculator and ONVIF device discovery
- Network tools: check many ports at once with ready-made port sets and see the services and TLS certificates behind open ports
- History and sharing: public IP history named devices with new ones marked and any result shared as a text report
- No ads and unlimited calculations
Monthly or yearly subscription; cancel anytime in Google Play.