IS

IS stats at a glance

The IS has 1080 hit points , 120mm of frontal hull armor , and a top speed of 34 km/h. Its strongest gun configuration deals 250 damage per shot with 175mm of armor penetration , giving it a theoretical maximum DPM of 1923. The vehicle can equip 4 different gun configurations, allowing for varied playstyles.

Hull & survivability

The front-to-side armor ratio is 1.3:1. Side armor is relatively comparable to the front, meaning the IS can absorb some side hits in close-quarters fighting.

Mobility

Forward-to-reverse speed ratio is 2.4:1. Reverse speed is limited, so pre-aim and exposure timing matter more on this vehicle.

Camouflage

Available guns (4)

With the top-tier gun, the IS can theoretically output up to 1923 damage per minute at sustained fire (shot damage × rounds per minute). Lower-tier guns generally trade DPM for faster reload or better handling — see the full gun table above.

How IS compares to its peers

There are 34 tier 7 heavy tanks in WoT, including the IS. Its 1080 HP places it in the top 61% for hit points among same-tier heavy tanks (peer average: 1099). Frontal hull armor of 120mm ranks in the top 33% for the class (peer average: 118mm). Top forward speed of 34 km/h is faster than 27% of peer vehicles in this tier and class. The strongest gun deals 250 damage per shot, higher than 55% of comparable vehicles. Best penetration of 175mm puts it in the top 79% for armor-piercing capability in its class.

Direct comparisons

• IS vs T29 — tier 7 heavy tank from USA
• IS vs King Tiger (C) — tier 7 heavy tank from USA
• IS vs M-II-Y — tier 7 heavy tank from USA
• See full tier 7 heavy tank tier list — all 34 vehicles ranked

Related tier 7 heavy tanks

• 45TP Habicha — Poland
• AMX M4 mle. 45 — France
• Black Prince — UK
• Black Prince II — UK, premium
• BZ-58 — China
• Carro d'assalto P.88 — Italy
• FV224 Chopper — UK
• FV201 (A45) — UK, premium
• All USSR tanks · Tier 7 premium tanks

Understand the stats

Want a deeper grasp of what these numbers actually mean in battle? Read the glossary:

• What is DPM — the most important offensive metric
• Alpha damage — single-shot damage and what it means for playstyle
• Penetration — and how it interacts with armor angling
• Hull-down position — the king of defensive plays
• View range — how spotting actually works

About this vehicle

The IS-1 (IS-85) heavy tank was a thorough modernization of the KV-1. The tank featured the 85-mm D-5T gun. The IS-1 entered mass production in October 1943, but work was discontinued at the beginning of 1944, as the IS-2 (IS-122) tank entered mass production in December 1943. A total of 107 vehicles were manufactured.

Frequently asked