API Rate Limit Calculator
Calculate API rate limit budgets, burst allowances, and throttling thresholds for effective API traffic management.
Free Networking Calculators
10 toolsSubnet, CIDR, MTU, and DNS calculators. Browse our free networking tools below — no sign-up required.
CIDR to IP Range Calculator
Convert CIDR notation to first and last IP addresses, total host count, and subnet mask. Supports all IPv4 prefixes.
DNS TTL Impact Calculator
Calculate the impact of DNS TTL values on propagation time, resolver cache hit rates, and DNS query volume.
IP Address Count Calculator
Calculate total and usable IP addresses for any CIDR range. Plan IP allocation for VPCs, subnets, and networks.
MTU Size Calculator
Calculate optimal MTU size, payload capacity, and overhead for different encapsulation types including VXLAN, GRE, and IPsec.
Network Latency & Throughput Calculator
Calculate file transfer time and effective throughput from bandwidth, latency, and protocol overhead for network planning.
Subnet Calculator
Calculate subnet mask, network address, broadcast address, and usable host range from an IP address and CIDR prefix.
TCP Window Size Calculator
Calculate optimal TCP window size and maximum throughput based on bandwidth and round-trip latency (bandwidth-delay product).
VLAN Capacity Calculator
Calculate VLAN capacity and plan broadcast domain sizing based on host count, traffic patterns, and performance targets.
Webhook Retry Cost Calculator
Calculate the infrastructure and compute cost of webhook delivery retries with exponential backoff strategies.