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Screenshots

  • HLL Arty Calculator screenshot 1
  • HLL Arty Calculator screenshot 2
  • HLL Arty Calculator screenshot 3
  • HLL Arty Calculator screenshot 4
  • HLL Arty Calculator screenshot 5
  • HLL Arty Calculator screenshot 6
  • HLL Arty Calculator screenshot 7
  • HLL Arty Calculator screenshot 8

About HLL Arty Calculator

Type the distance, read the number, fire. That's the whole app.

It's built for playing artillery with your phone next to the keyboard. The keys are big enough to hit with a thumb while your eyes stay on the game, and the answer is the biggest thing on the screen.

WHAT'S IN IT

• Hell Let Loose field artillery: mils for the US, German, Soviet, British and Canadian guns, 100 to 1600 m.
• Self-propelled guns: Sherman 105, KV-2, Panzer III N, Brummbär, Bishop and Churchill AVRE. Set your RED sight offset and it gives you the value to dial. It also warns you when the shot is past what the turret can elevate to.
• HLL: Vietnam mortar: barrel angle for 100 to 450 m. US and NVA mortars use the same table.
• Shot timer: tap SHOT when you fire. It counts down the shell's flight and flashes SPLASH when it should land. Hold it to change the flight time, and use CAL to shift it a second or two for your reaction time.
• Back-to-back fire missions: pause for a moment, then start typing the next range. The old one clears on its own.
• The screen stays on while the app is open.

No account and no sign-in. The calculator works offline. Only the ad banner needs a connection.

A NOTE ON THE VIETNAM NUMBERS
The developers haven't published official mortar tables for HLL: Vietnam, so that table comes from community testing in game. If a range is off for you, email [email protected] with the distance and what worked, and it'll get fixed in an update.

This is a fan-made tool. It is not affiliated with, endorsed by or sponsored by Team17, Black Matter or Expression Games. Hell Let Loose is a trademark of its respective owners.

What’s new

Version 1.0 · Updated October 3, 2026

First release. Field artillery for all five WWII factions, six self-propelled guns, the HLL: Vietnam mortar and a shot timer.