Where do you find the Calculator in Arc Raiders?

Only on Pendola Pass, the Frozen Trail map. Most of its spots are loose loot: check shelves, train-car tables and seats, counters and tables, or consoles and desks, and search containers on the way. The areas with the most spots are Commissary Supermarket, Almatera Station and Cielo Sereno Observatory.

What is the Calculator used for?

3 for the Research Station upgrade from level I to II, plus the Advanced Camera and Mountaineer's Detector recipes.

Can you find the Calculator on other maps?

No. Its drop rules tie it to the Frozen Trail map, so it only spawns on Pendola Pass.

Where to Find the Calculator in Arc Raiders

The Calculator (rare, worth 640) spawns on Pendola Pass only. You need it for upgrading the Research Station from level I to II (3 Calculators), and for crafting the Advanced Camera and the Mountaineer's Detector. The Thermal Shaker and Differential Microphone spawn in exactly the same places, so you'll farm all three on one route.

Quick Answer

Map: Pendola Pass only.
Best areas: Commissary Supermarket, Almatera Station, Cielo Sereno Observatory and Freight Terminal.
Search: shelves, train-car tables and seats, counters and tables, or consoles and desks.
Loot type: Technological and Electrical.
Loot zones: check the map at raid start. Areas marked yellow roll better loot, and red ones more and better still.
You need: 3 for the Research Station upgrade from level I to II, plus the Advanced Camera and Mountaineer's Detector recipes.

What Kind of Places to Search

Most of its spawn spots are loose loot, lying out in the open, so look at surfaces as you move through a building. Containers (cabinets, desks, bags, breachable boxes) can hold it too. Share of all its spawn spots on Pendola Pass:

Where	Share of spots
Shelves and storage racks	51%
Train cars: tables and seats	10%
Tables, chairs and counters	7%
Consoles, desks and control panels	5%
Office desks and filing cabinets	5%
Parked vehicles	4%

Where we and other Raiders have picked it up:

Calculator pickup prompt on an empty shop shelf at Almatera Station — Loose on a shop shelf at Almatera Station, in the same raid as a Laser Level and a Thermal Shaker. Almatera Station was a yellow loot zone that raid; as a red zone it rolls more and better loot. Screenshot: Arc Raiders Hub.

Raider searching a case under a bunk in a dark sleeper train compartment — In a case under a bunk in a sleeper compartment of the derailed train by the Freight Terminal. Screenshot: Arc Raiders Hub.

Raider searching a cabinet drawer beside a control console — In a cabinet drawer next to a control console in the Cielo Sereno Observatory key room. Screenshot: Millzaa.

Best Areas on Pendola Pass

The places with the most spots where the Calculator can spawn:

Commissary Supermarket (985 spots)
Almatera Station (402 spots)
Cielo Sereno Observatory (268 spots)
Freight Terminal (207 spots)
Railyard (149 spots)

Open the Pendola Pass map to plan a route through them. Spots are only chances: every spot can roll many other items too.

Tips

Train cars are quick wins. Parked passenger cars have a table and seats per bay; walk the aisle and look down.
Head for the loot zones. Each raid marks some areas yellow or red on the map, and they change every raid. Yellow already rolls better loot; red rolls more and better loot still.
It weighs 0.5. Keep picking them up; three is all a project asks for.
Key rooms pay off. In the footage we went through, the Almatera Station, Cielo Sereno Observatory and Old Town key rooms gave Laser Levels, Insulation Rolls, Epoxy Buckets, Thermal Shakers, Calculators and a Radial Press.

Related Guides

Where to find the Thermal Shaker (same spots)
Where to find the Differential Microphone (same spots)
Where to find the Epoxy Bucket
Where to find the Hand Drill
Where to find the Laser Level
Where to find the Insulation Roll
Where to find the Radial Press
Where to find the Mini Pump
Where to find Planks and Sheet Metal
Everything the Outpost asks for: our Needed Items guide and the Outpost steps in our amplified weapons guide

Spawn data from the Arc Raiders 2.0 game files; screenshots: Arc Raiders Hub, Millzaa.