HLL: Vietnam Mortar & Artillery Calculator
Type two grid references, get distance and azimuth instantly. Elevation tables go live with launch-day field calibration on August 13, 2026 — sampled in real matches, data published openly.
Square size defaults to the 200 m Hell Let Loose series convention; we verify Vietnam's exact grid at launch and update here. Keypads follow the standard phone layout (1 NW … 9 SE).
How the calculator works
Grid references resolve to coordinates: a letter+number names the big square, each keypad digit narrows it 3×3 (200 m → 66.7 m → 22.2 m). Distance is straight-line between the two points; azimuth is the bearing from your gun to the target in degrees and NATO mils (6,400 per circle — the scale the HLL series has always used for artillery). When the elevation tables land, the calculator maps distance → elevation per shell type with piecewise interpolation between calibrated samples.
The answers the wikis skipped
- Is the $59.99 Deluxe Edition worth it? — exactly what's inside, with store-page sources.
- Crossplay & cross-progression, precisely — server platform filters, what carries over, unlock times by timezone.
- Steam Deck & Linux status — kernel-level EAC, what beta testing actually showed.
- Push to talk "missing" — the mislabeled setting that fixes it.
- Motion sickness setup — the four settings that matter, from beta reports.
- Helicopter controls — keybinds, roles, and the sensitivity trap.
- Renting a server — the six official partners and real prices.
Independent fan project. Not affiliated with Team17 or Expression Games. Facts carry source links; last verified Aug 8, 2026.