Airsoft Build Tools

Dial in your loadout with calculators built for real field play. The basics are free to explore — subscribers unlock the full interactive results.

Pro

FPS / Joule Build Calculator

Convert FPS to muzzle energy (Joules), compare velocity across BB weights, estimate ROF, and check your setup against CQB, AEG, DMR and sniper field limits.

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Plus

LiPo Battery & Motor Advisor

Tell us your spring and how you play — get a recommended LiPo cell count, C-rating, mAh range and motor torque-vs-speed guidance, with MOSFET safety notes.

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