Description
TNT is crafted from five gunpowder and four sand in a checkerboard pattern. Once placed, it activates when hit by fire, flint and steel, a flame arrow, a redstone signal, or a nearby explosion. After ignition a four-second countdown begins: the blast destroys blocks in a roughly spherical radius, drops a fraction as items, and knocks entities away with force 4 — equivalent to a charged creeper.
In water the explosion does not damage blocks but still hurts entities, making underwater TNT traps lethal without terrain destruction. Technical players use it in cannons — redstone contraptions that launch explosive projectiles by staging charges in water — and in farms that automate block collection. Large mining operations rely on TNT to quarry wide areas quickly. On Bedrock the same rules apply, though drop rates differ slightly from Java.