Tech

Bandwidth, storage, color contrast, password strength.

5 calculators · 4 sub-fields

Bandwidth

2 calculators

Download time calculator How long a file takes to download given size, bandwidth and network efficiency. →
Subnet (CIDR) calculator IPv4 CIDR subnet info: network, broadcast, mask, hosts, class, and address-space split. →

Storage

1 calculator

Photo & video storage calculator Disk space for photos (MP × format) and video (resolution × fps × codec × time). →

Color contrast

1 calculator

Color contrast checker WCAG 2.1 luminance contrast ratio with AA / AAA pass-fail badges. →

Password strength

1 calculator

Password strength Estimate password entropy and crack time from length and character classes. →