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Free dashcam calculator

How much dashcam storage do you need?

Use the combined camera bitrate—not marketing resolution alone—to estimate footage storage and the next common card capacity.

Mbps
hours
days

The estimate uses decimal gigabytes and adds 20% headroom. Loop recording, file-system overhead and the camera’s own capacity limit still matter.

Storage estimate

128 GBnext common capacity with headroom

Raw footage86.4 GB
With 20% reserve103.7 GB
Check the dashcam manufacturer’s maximum card capacity, required speed class and formatting instructions before buying.
01

Find the combined bitrate

A front-and-rear camera may quote a combined or separate bitrate for each channel. Add channels together if needed.

02

Retention is not guaranteed

Parking mode, clips protected from overwrite and variable bitrate can reduce the loop-recording history available.

03

Compatibility comes first

Check the manufacturer’s supported capacity, file system, speed class and endurance guidance before buying.