E100 Energy (Metric, at 100 m)
Kinetic energy at 100 meters in joules — the figure many European hunting regulations reference. Check your own country's specific legal minimum.
How this works
E100 — kinetic energy at 100 meters — is a standard reference figure in many European hunting regulations, expressed in joules rather than the foot-pounds used in US ballistics. This calculator runs the same underlying G1 trajectory physics as the imperial Bullet Drop calculator, just with metric inputs and outputs throughout, so you don't have to convert units by hand.
Why this matters for legal compliance
Many European countries set a minimum E100 energy for specific game categories (often distinguishing roe deer from larger game like red deer or wild boar), and the specific joule threshold differs by country and sometimes by federal state or region within a country. Always confirm your actual jurisdiction's current legal minimum rather than assuming a number from elsewhere.
Frequently asked questions
Is E100 a legal requirement everywhere in Europe?
Many European countries reference E100 as a minimum energy standard for specific game categories, but the exact required number varies by country and sometimes by region — always confirm your actual jurisdiction's current legal minimum.
Why is this in joules instead of foot-pounds?
Joules are the standard metric energy unit used in most European hunting regulations — this calculator runs the same underlying trajectory physics as the imperial version, just with metric inputs and outputs throughout.
Does E100 distinguish between game species?
The underlying calculation doesn't, but many countries' regulations do — often setting a different minimum for roe deer versus larger game like red deer or wild boar, so check the specific requirement for your target species.
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