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uencoder

Geohash

Geohash encodes geographic coordinates (latitude and longitude) as a Base32 string, where shared string prefixes express spatial containment.

Purpose

It reduces two-dimensional coordinates to a one-dimensional string, convenient for indexing, caching, and prefix range queries.

Mechanism

Latitude and longitude are alternately binary-searched: each step compares against the interval midpoint to emit a 0 or 1, and the interleaved bit string is mapped 5 bits at a time onto the Base32 alphabet. Longer prefixes mean higher precision.

Use cases

  • Spatial indexing and range queries
  • Location cache keys
  • Short-link geocoding

Related tools

Base32 Encoder
Encode text to Base32 (RFC 4648) online. Free, private, and 100% client-side.
TOOL
Base32 Decoder
Decode Base32 (RFC 4648) back to readable text online. Free, private, and 100% client-side.
TOOL
GeoHash Encode
GeoHash Encode — pure client-side tool. Privacy-first, no server round-trip.
TOOL
GeoHash Decode
GeoHash Decode — pure client-side tool. Privacy-first, no server round-trip.
TOOL

References