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GridConvertPro
Convert GPS coordinates between every format, free ⭐
GridConvertPro is a free, browser-based coordinate converter. Instantly convert between Decimal Degrees, DMS, DDM, UTM, MGRS and Plus Codes with a live map — plus distance & bearing, rhumb line, magnetic declination, solar times, elevation, area measurement, bulk conversion and place search. Core conversions run entirely in your browser, so your coordinates never leave your device. No signup, no install, works offline.
Hey Product Hunt! 👋
I'm a solo developer, and I built GridConvertPro out of pure frustration.
The problem: I constantly needed to convert coordinates between formats —
lat/long ↔ UTM ↔ MGRS ↔ Plus Codes — and every tool I found was either
cluttered with ads, hidden behind a paywall, or quietly sent my coordinates
off to some server. For a simple math operation, that felt wrong.
So I built a clean, fast converter that does everything in the browser:
• All major formats, two-way conversion + a live interactive map
• Distance, bearing & rhumb line (loxodrome) — handy for marine navigation
• Magnetic declination (WMM-2020), solar times, elevation & area measurement
• Bulk conversion, multi-waypoint routes and place search
• Works offline as a PWA, no signup, completely free
What started as a basic lat/long ↔ UTM converter kept growing as I asked
"what would a surveyor, a sailor, or a drone pilot actually need?" — and that's
how the marine, magnetic and solar tools came to life.
The core math runs entirely client-side, so your coordinates never leave your
device.
I'd genuinely love feedback — especially from anyone in GIS, surveying,
aviation, sailing or geocaching. What format or feature should I add next?
No comment highlights available yet. Please check back later!
About GridConvertPro on Product Hunt
“Convert GPS coordinates between every format, free ⭐”
GridConvertPro was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #27 on the daily leaderboard. GridConvertPro is a free, browser-based coordinate converter. Instantly convert between Decimal Degrees, DMS, DDM, UTM, MGRS and Plus Codes with a live map — plus distance & bearing, rhumb line, magnetic declination, solar times, elevation, area measurement, bulk conversion and place search. Core conversions run entirely in your browser, so your coordinates never leave your device. No signup, no install, works offline.
GridConvertPro was featured in Productivity (653.5k followers), Developer Tools (513.8k followers) and Maps (12.8k followers) on Product Hunt. Together, these topics include over 212.6k products, making this a competitive space to launch in.
Who hunted GridConvertPro?
GridConvertPro was hunted by Deana Velichkova. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
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Deana Velichkova