Acrobatic Force Calculator

Forces on flyer and base from acrobatic move and body weights.

Base weight (kg)

Flyer weight (kg)

Toss height (m)

Catch duration (ms)

Static hold time (s)

Tab to move between fields

Static hold force (N)

1,324.35

Catch force (N)

2,031.41

Static hold force (lbs)297.73

Launch velocity (m/s)5.42

Push-off force (N)1,534.12

Push-off G-force2.84

Air time (s)1.11

Catch force (lbs)456.68

Catch G-force (flyer)3.77

Kinetic energy (J)809.33

Catch Deceleration G2.77%

Base Catch Force N2,816.21

Hold Fatigue Index6.62

How to Use This Calculator

Enter the base partner's weight (kg) and the flyer's weight (kg).
Input the toss height (m) — how high the flyer is launched above the base's hands.
Set the catch duration (ms) — shorter catch times produce higher impact forces.
Review Peak Force on Base (N and kg-equivalent), G-force, and safety rating.
Use the G-force value to ensure forces stay within safe limits for your training level.

How the result changes with Base weight (kg)

Base weight (kg): Body weight of the base (person on bottom).
Flyer weight (kg): Body weight of the flyer (person on top / being tossed).
Toss height (m): Height the flyer is launched above the base's hands (0 for static holds only).
Catch duration (ms): How long the catch deceleration lasts — shorter = higher forces (200 ms is a controlled catch).
Static hold time (s): Duration of a static balance hold for fatigue estimation.

Static hold force (N): Compression force on the base during a static hold.
Static hold force (lbs): Static hold force in pounds.
Launch velocity (m/s): Upward velocity at release to achieve the toss height.
Push-off force (N): Peak force on the base during a toss push-off.
Push-off G-force: Multiples of flyer body weight during push-off.
Air time (s): Total time the flyer is airborne.
Catch force (N): Peak force on the base's hands during the catch.
Catch force (lbs): Catch force in pounds.
Catch G-force (flyer): G-force the flyer experiences during the catch deceleration.
Kinetic energy (J): Kinetic energy the base must absorb during the catch.

Identify Input Parameters
4 parameters
Base weight (kg) = 80, Flyer weight (kg) = 55, Toss height (m) = 1.5, Catch duration (ms) = 200 = 5 input(s) provided
Calculate Static hold force
1324.35 = 1324.35
Calculate Catch force
Catch force = flyerMassKg * (impactVelocity / catchDurationSec + g)
2031.41 = 2031.41
Calculate Static hold force
Static hold force = baseCompressionN * 0.224809
297.73 = 297.73
Calculate Launch velocity
Launch velocity = sqrt(2 * g * tossHeightM)
5.42 = 5.42