Engineering calculators for WISP & fiber networks
Precision planning tools for WISPs and fiber operators — RF, optical, power, addressing and business math. No sign-up required.
Link Budget Calculator
Calculate FSPL, RSSI, and EIRP for wireless links (2.4GHz to 60GHz).
Tower Revenue Calculator
Analyze ISP tower profitability, CAPEX/OPEX, and business Break-Even Point.
GPON Splitter Calculator
Plan optical budgets for PON networks. Calculate splitter and fiber loss.
UPS Runtime Calculator
Estimate battery backup time based on load (Watts) and battery capacity (Ah).
IPv4 Subnet Calculator
CIDR to Subnet Mask, Network Address, Broadcast, and Host Range calculator.
CGNAT Calculator
Plan Carrier-Grade NAT: subscribers per public IPv4, port blocks, and pool capacity.
Data & Bandwidth Converter
Convert Mbps to Gbps, MB to GB, bits to bytes, plus a download time calculator.
Bandwidth Calculator
Plan oversuspcription ratios and total backhaul capacity requirements.
ROI Comparison
Compare ISPbox costs vs other platforms. See how much you can save.
SLA Uptime Calculator
Convert SLA uptime percentages (99.9%) to allowable downtime limits.
Why use ISPbox tools?
We build professional-grade engineering calculators for Wireless ISPs (WISPs) and fiber operators. Save time on complex calculations for link budgets, optical distribution, power backup systems, and business planning.
