Storage
How Much Storage Does a Dash Cam Need?
Bigger is not always necessary. The right card size depends on your resolution, whether you run one or two channels, and how much history you want before it loops.
Resolution and channels drive it
4K uses far more space than 1080p, and a second channel roughly doubles the write load. Higher settings mean you want more capacity to hold the same amount of time.
Think in hours
Estimate how many hours of footage you want on hand before old clips are overwritten. A daily commuter needs less buffer than someone relying on long parking-mode coverage.
A practical starting point
128GB is a comfortable default for single-channel 4K. Move up to 256GB for dual channels or extended parking recording, within your camera’s supported limit.
Resolution is the biggest lever
If you are still deciding on resolution, see 4K vs 2K vs 1080p first — it drives storage needs more than almost any other choice.
Frequently asked questions
Is 64GB enough for a dash cam?
It can work for a single-channel 1080p camera with frequent card checks, but most drivers are better served by 128GB or more, especially with 4K or a second channel.
Does a bigger card mean better protection?
Not directly — it means more history before old footage is overwritten. The card itself still needs to be high-endurance rated regardless of size.