{"uid":"cap_-9S3X1oSZv0GLi64eN5vt","slug":"geo-calc-utm-mgrs-to-wgs84-reverse-converter-8c3d543e","name":"Geo Calc UTM/MGRS to WGS84 Reverse Converter","description":"Convert a UTM (18T 585628 4511322) or MGRS (18TWL8562811322) reference to WGS84 latitude/longitude.","url":"https://geo-calc.x402tookit.com/utm-mgrs-reverse?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["code"],"properties":{"code":{"type":"string","description":"MGRS like 18TWL8562811322 or UTM like '18T 585628 4511322' (letter = latitude band)"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"lat":{"type":["null","number"]},"lon":{"type":["null","number"]},"asOf":{"type":["null","string"]},"band":{"type":["null","string"]},"mgrs":{"type":["null","string"]},"zone":{"type":["null","number"]},"input":{"type":["null","string"]},"valid":{"type":["boolean","null"]},"inBand":{"type":["boolean","null"]},"source":{"type":["null","string"]},"easting":{"type":["null","number"]},"reasons":{"type":["array","null"],"items":{"type":"string"}},"summary":{"type":["null","string"]},"verdict":{"type":["null","string"]},"degraded":{"type":["boolean","null"]},"northing":{"type":["null","number"]},"cellSizeM":{"type":["null","number"]},"disclaimer":{"type":["null","string"]},"hemisphere":{"type":["null","string"]},"notChecked":{"type":["array","null"],"items":{"type":"string"}},"southWestLat":{"type":["null","number"]},"southWestLon":{"type":["null","number"]}}}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_D6D3zwXCzRgL42s4Za1OG","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Converts a UTM (e.g. 18T 585628 4511322) or MGRS (e.g. 18TWL8562811322) grid reference to WGS84 latitude/longitude coordinates.","exampleAgentPrompt":"Can you convert UTM coordinate 18T 585628 4511322 to WGS84 latitude and longitude for me?","exampleUseCases":[{"title":"Field survey coordinate conversion","prompt":"I have a UTM coordinate from my survey equipment — 18T 585628 4511322 — can you convert that to a standard latitude and longitude I can drop into Google Maps?"},{"title":"Military MGRS to GPS coordinates","prompt":"Convert the MGRS grid reference 18TWL8562811322 to decimal degree latitude and longitude so I can plot it on a civilian GPS device."},{"title":"GIS data import preparation","prompt":"I've got a batch of points in UTM notation like 17T 630084 4833438 that need to be in WGS84 lat/lon — can you start by converting that first one to decimal degrees?"}],"resultDescription":"Returns the WGS84 latitude and longitude derived from the input UTM or MGRS code, along with parsed components (zone number, band letter, easting, northing, hemisphere), the canonical MGRS string, the SW corner of the MGRS cell, a validity flag, validation reasons, a human-readable summary, and metadata such as cell size in metres and whether the result is degraded.","failureModes":["Invalid or malformed UTM/MGRS string returns valid=false with reasons array explaining the parsing error","Zone number or band letter outside legal range results in a null lat/lon with an error summary","Missing required 'code' query parameter causes a 400-level error","Ambiguous short MGRS codes without a reference point may fail or return null coordinates"],"whenToPreferThis":"Use this endpoint when you have a UTM or MGRS grid reference (from military maps, survey equipment, GIS exports, or topo maps) and need to convert it back to standard WGS84 decimal latitude/longitude. Prefer this over manual parsing when you also need structured output (zone, band, easting, northing, hemisphere, cell bounds) and built-in validity checking. It complements the sibling lat/lon-to-UTM/MGRS endpoint for round-trip workflows.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-30T00:35:07.948Z","isFirstParty":false,"canonicalSlug":"geo-calc-utm-mgrs-to-wgs84-reverse-converter-8c3d543e"}