Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Math
IP Subnet Calculator
Compute the number of usable hosts in an IPv4 subnet from its CIDR prefix length. A /24 gives 254 usable hosts, a /30 gives 2, and so on.
Fill in the required fields to see your result.
Math
Combination Calculator
Calculate the number of unordered selections of r items from n distinct items, where the order does not matter. Ideal for lottery draws, committees, and poker hands.
Fill in the required fields to see your result.
Key differences
| IP Subnet Calculator | Combination Calculator | |
|---|---|---|
| Category | Math | Math |
| Inputs required | 1 | 2 |
| Result | Usable Hosts (hosts) | C(n,r) |
| What it does | Compute the number of usable hosts in an IPv4 subnet from its CIDR prefix length. A /24 gives 254 usable hosts, a /30 gives 2, and so on. | Calculate the number of unordered selections of r items from n distinct items, where the order does not matter. Ideal for lottery draws, committees, and poker hands. |