Nuke Blast Simulator

Blockbuster (HC 4000)

UK · 1941 · 1.4 t explosive fill · conventional high-explosive

By Marko Visic, BSc Physics

Overview

British 'cookie' blast bomb (about 1.4 t explosive fill).

With about 1.4 t of explosive fill (no published TNT equivalent)[1], the Blockbuster (HC 4000) is a conventional high-explosive weapon that releases its energy through chemical reactions, not nuclear processes. [2]

Effect radii not shown

The Blockbuster (HC 4000) is a conventional (non-nuclear) weapon. The nuclear blast and thermal scaling laws this site uses do not apply to chemical explosives, so no effect radii are shown. See the methodology page.

Related Weapons

FAQ

What is the explosive fill of the Blockbuster (HC 4000)?

The Blockbuster (HC 4000) holds about 1.4 t of explosive fill (no published TNT equivalent).[1]

Sources

  1. 1.Source: Wikipedia, Blockbuster bomb — retrieved Oct 2026
  2. 2.Source: US DoD & ERDA (Glasstone & Dolan), via Atomic Archive, The Effects of Nuclear Weapons, 3rd ed. (1977), Chapter 1 — retrieved Oct 2026
See the full Weapons Database, all data sources, or the scientific methodology.