Compare calculators

Both calculators run independently — change the inputs on either side to compare results.

Swimming Drag Coefficient Calculator

Calculates the hydrodynamic drag force acting on a swimmer based on velocity, body position, stroke technique, and body size. Use it to quantify how much resistance poor posture or technique adds.

Swimming Velocity (m/s)

Body Position

Stroke Efficiency

Swimmer Weight (kg)

Fill in the required fields to see your result.

Swimming

Open Water Swimming Time Calculator

Estimates your open water swim finish time based on your pool pace, race distance, water conditions, and wetsuit use. Ideal for triathletes and open water racers planning race-day pacing.

Pool Time (per 100m) (seconds)

Open Water Distance (meters)

Water Conditions

Wetsuit Usage

Fill in the required fields to see your result.

Key differences

	Swimming Drag Coefficient Calculator	Open Water Swimming Time Calculator
Category	Swimming	Swimming
Inputs required	4	4
Result	Drag Force (Newtons)	Estimated Open Water Time (seconds)
What it does	Calculates the hydrodynamic drag force acting on a swimmer based on velocity, body position, stroke technique, and body size. Use it to quantify how much resistance poor posture or technique adds.	Estimates your open water swim finish time based on your pool pace, race distance, water conditions, and wetsuit use. Ideal for triathletes and open water racers planning race-day pacing.