A free point-mass trajectory calculator. Choose G1 or G7, enter your bullet and atmospheric conditions by hand, and get drop, wind drift, velocity, energy, and time of flight out to your max range. No sign-in, no account, no bullet library lookups — just the core math.
Basic Ballistics Calculator
Free point-mass trajectory calculator. Pick G1 or G7, enter your bullet and conditions by hand, and get drop, wind drift, velocity, energy, and time of flight. No sign-in required.
Inputs
Standard point-mass trajectory model, selectable between G1 and G7 drag curves. Wind drift uses the lag-rule method.
This is a planning estimate — not a replacement for live-fire confirmation. Use the drag model that matches how your bullet’s BC was published.
Want spin drift, Coriolis correction for extreme range, the full bullet library, and the ability to save and reload your calculations from any device? Try the Advanced Ballistics Calculator.
Summary
Trajectory Graph
Range Card
| Range | Vel | Energy | ToF | Drop | Elev MIL | Elev MOA | Wind MIL | Wind MOA |
|---|
How This Calculator Works
This is a single-BC point-mass trajectory calculator: enter your bullet's published ballistic coefficient and basic chronograph and atmosphere data, and it steps the flight forward to compute drop, wind drift, velocity, energy, and time of flight at each range step. It does not account for spin drift or the Coriolis effect -- both of which become meaningful at long range -- and it doesn't pull bullet dimensions from a library, so weight and BC are entered manually.
Choosing G1 vs G7
Use whichever drag model matches how your bullet's published BC was measured -- check the manufacturer's data sheet. G7 is the better physical match for modern boat-tail match bullets. G1 is still the most common BC published for factory ammunition. Mixing them will give significantly wrong answers.
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