OpenMag
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Submit a measurement

Record the local magnetic field strength at your location in microtesla (µT). Sign in with Internet Identity to add your reading to the atlas.

OpenMag

An open, community-driven atlas of Earth's local magnetic field. Anyone can browse the global map and contribute measurements in microtesla (µT) — no account required to explore.

InstrumentMeasurements in microtesla (µT)Interactive global map with pan & zoomOpen & community-driven
© 2026. Built with love using caffeine.ai.Geomagnetic Field Atlas

Built on the Internet Computer (ICP) — decentralized infrastructure for an open, community-driven geomagnetic field atlas.