OFAB-5000
Russia · 1990 · 2.5 tons TNT · conventional high-explosive
Overview
Modern Russian high-explosive bomb.
With a yield of 2.5 tons TNT, the OFAB-5000 is 6000× smaller than the Hiroshima bomb. It is a conventional high-explosive weapon that releases its energy through chemical reactions, not nuclear processes.
OFAB-5000 Blast Effects
The table below shows the calculated radius of each effect zone for an air burst (optimal altitude, maximum blast spread) and a surface burst (ground level, with massive radioactive fallout). Formulas are scaling laws from The Effects of Nuclear Weapons (Glasstone & Dolan, 1977).
| Effect zone | Air burst | Surface burst |
|---|---|---|
| Fireball radius | 0.01 km | 0.01 km |
| Severe blast (20 PSI) | 0.07 km | 0.04 km |
| Moderate blast (5 PSI) | 0.14 km | 0.08 km |
| Light blast (1 PSI) | 0.41 km | 0.22 km |
| 3rd-degree thermal burns | 0.06 km | 0.03 km |
| 2nd-degree thermal burns | 0.10 km | 0.06 km |
| Lethal fallout zone | minimal | ~1.1 km |
All values are 1-D ground-distance estimates from the detonation point. Real-world effects depend on terrain, weather, and building construction.
Run the OFAB-5000 on a City
Use the interactive simulator to detonate the OFAB-5000 on any city worldwide. Click any location on the map to see the fireball, blast, and thermal radii overlaid on real geography with population-density-based casualty estimates.
🎯 Simulate OFAB-5000Related Weapons
FAQ
How big is the OFAB-5000 blast radius?
In an air burst, the OFAB-5000 produces a fireball roughly 0.01 km in radius and a 5 PSI moderate-blast zone of about 0.14 km — the area in which most residential buildings would collapse. The 1 PSI light-damage radius extends to roughly 0.41 km, where windows shatter.
What is the yield of the OFAB-5000?
The OFAB-5000 has a yield of 2.5 tons TNT of TNT equivalent. That is 6000× smaller than the Hiroshima bomb.
Is the OFAB-5000 bigger than the Hiroshima bomb?
The Hiroshima bomb (Little Boy) had a yield of approximately 15 kilotons. The OFAB-5000 at 2.5 tons TNT is 6000× smaller than the Hiroshima bomb.