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Download time, bandwidth, subnet, uptime SLA, streaming bitrate.
Tap any card to open its calculator page.
Calculate hosts per subnet, subnet bits, and usable hosts
Calculate how long it takes to download a file at a given speed
Calculate required bandwidth for multiple users with overhead and redundancy
Convert baud rate to bit rate, byte rate, and kilobits per second
Calculate total data transferred over a period at a given rate
Estimate daily, monthly, and yearly data usage for streaming video
Calculate how long it takes to upload a file at a given speed
Convert uptime percentage to allowed downtime and SLA tier
Estimate CO2 emissions from website page views per month
All 570 calculators in your pocket. Offline-ready, no ads, no trackers. iOS and Android apps land soon — get notified when they ship.