Category 17
Tech & digital life calculators
Estimate storage, transfer time, battery life, data use, and device costs.
11 practical tools
All 11 calculators are available now with visible formulas and assumptions.
Data transfer time
How long will a file transfer take at the effective connection speed?
Photo storage capacity
How many photos fit in the available storage?
Cloud storage cost
What does cloud storage cost per terabyte and over several years?
Internet data usage
What monthly data use follows from daily online activity?
Video file size
What file size follows from bitrate and video duration?
Battery runtime
How long can a battery run a device at the entered power draw?
Power bank charges
How many effective device charges can a power bank provide?
Screen pixel density
What pixel density follows from resolution and diagonal size?
Computer upgrade payback
When does time saved by a faster computer recover its cost?
Printer cost per page
What does each printed page cost after ink, toner, and paper?
IP subnet planner
How many addresses and usable hosts fit an IPv4 prefix?