For questions or bug reports, please email us.
Elevation data is fetched over the internet — please check your connection. Areas over open sea or without elevation data may show no lines.
COAST mode draws only where the sea meets land. Inland spots show “No coastline in this area.” Widen the range or pick a coastal spot.
With SCALE set to AUTO, the highest point in the range always fills the frame. Switch SCALE to REAL (relative to Everest) to draw true-to-height.
Yes. Search or pick anywhere on the map. Japan uses GSI data; elsewhere uses Mapzen Terrain Tiles.
All your pieces are stored only on your device. No account, no personal data collection.
© 2026 Takanori Hamuro · Elevation: GSI Japan / Mapzen Terrain Tiles