Dash Cam Storage Calculator
Recording Time
Calculate how long a memory card will record
Recommended Card Size
Find the right memory card size for your needs
hours
days
Formula
Recording Hours = (Card Size × 0.93) / ((Bitrate Mbps × Channels × 3600) / 8 / 1,073,741,824)
Frequently Asked Questions
What size SD card do I need for a dash cam?
For a 1080p single-channel dash cam, a 64-128 GB card provides 8-20 hours of recording. For 4K or dual-channel setups, 128-256 GB is recommended. Most dash cams loop-record, overwriting the oldest footage automatically.
How long does a 128GB card last in a dash cam?
At 1080p with a single camera, approximately 12-20 hours. At 4K or with dual cameras, approximately 4-8 hours. The exact time depends on video bitrate, compression, and whether audio is recorded.
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