Air Rifle Calculators – Muzzle Energy Calculator & Air Rifle Refill calculator.

Our free Air Rifle Calculators help shooters measure muzzle energy in Joules and Foot-Pounds (FPE), and calculate how many times you can refill your PCP air rifle from a scuba tank or cylinder. Whether you want to check pellet power or plan your shooting sessions, these tools provide accurate, reliable results.

Bullet Energy Calculator (Joules & FPE)

Bullet Energy Calculator

Bullet Weight:

Bullet Speed:

Energy Results

Energy: 0 Joules

Energy: 0 Foot-Pounds

Air Rifle Refill Calculator (Cylinder Fills)

Air Rifle Refill Calculator

Tank

Tank Pressure (bar):
Tank Capacity (L):

Air Rifle

Air Rifle Max Pressure (bar):
Air Rifle Capacity (L):

Result

Please note that above is a guideline and the number of fills you can get from a cylinder depends on several factors, including the size of the cylinder, the pressure it’s filled to, and the size and pressure rating of the cylinder being filled.

Additionally, the efficiency of the airgun and the air left in the air rifle before refilling play a significant role. So if your just doing a top-up then you should get more fills.

Important Considerations:

Safety:

Ensure cylinders are properly maintained and inspected regularly (every 2-5 years).

Fill your air rifle slowly to avoid going over the stated pressure as this will pop your safety disc or burst disc.

Good practice:

Don’t shoot your non-regulated air rifle under 100 Bar and don’t shoot your regulated air rifle under the set regulator pressure.

Efficiency:

Airguns and fill systems have varying degrees of efficiency, which can affect the number of fills.

Temperature:

Temperature changes can affect pressure and volume, so consider this when estimating fills.

Calculators