Calculator
True-cost calculator
Monitors, interval and people on call drive the price more than the headline plan. Enter yours.
UptimeRobot
Better Stack
HetrixTools
Estimate in USD per month before tax, using list prices checked 2026-10-21. It picks the cheapest public plan that meets monitors + interval. Better Stack: one responder license per on-call person. UptimeRobot extra seats and SMS credits are not added - see each tool page. Needs JavaScript; without it, use the tables on the compare page.