Tech / IT
All Tech / IT calculators on TudoCalc: fast, free and easy to use.
Download time
Calculate how long a file takes to download at your internet speed.
Subnet (IPv4/CIDR)
Compute network address, broadcast, mask and host count from an IP and CIDR prefix.
Password strength
Estimate password entropy (bits) and crack time from length and character types.
HEX ↔ RGB color
Convert colors between HEX (#RRGGBB) and RGB formats.
Aspect ratio
Find the aspect ratio (e.g. 16:9) of an image or screen and resize keeping the proportion.