1 IPv4 Subnet Calculator
2 CIDR Calculator
3 IP Address Converter
4 Data-Storage Converter
5 File-Transfer-Time Calculator
6 Network Bandwidth Calculator
7 Download-Time Calculator
8 RAID Capacity Calculator
9 CPU Clock / Cycle Calculator
10 Unix Permissions Calculator
| Class | Read (4) | Write (2) | Execute (1) | Value |
|---|---|---|---|---|
| Owner | 7 | |||
| Group | 5 | |||
| Others | 5 |
755 rwxr-xr-x
chmod command
chmod 755 filename
Read = 4, Write = 2, Execute = 1. Each class is the sum of its selected permissions.
Special bits add a leading octal digit when selected.
11 ASCII / Hex / Binary Converter
12 Storage Growth Estimator
13 Checksums / Hash Calculator
SHA hashes use the browser's Web Crypto API. CRC-32 and FNV-1a are calculated locally in JavaScript.