Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Mechanical
Fan Performance Calculator
Calculates the motor power (HP) required to drive a fan based on airflow rate, static pressure, and combined fan and motor efficiencies. Used by HVAC engineers and system designers to select appropriately sized fan motors.
Fill in the required fields to see your result.
Mechanical
Friction Force Calculator
Calculates the friction force resisting relative motion between two surfaces from the normal force and the coefficient of friction. Use it in braking, clamping, or sliding contact design problems.
Fill in the required fields to see your result.
Key differences
| Fan Performance Calculator | Friction Force Calculator | |
|---|---|---|
| Category | Mechanical | Mechanical |
| Inputs required | 4 | 2 |
| Result | Motor Power Required (HP) | Friction Force (N) |
| What it does | Calculates the motor power (HP) required to drive a fan based on airflow rate, static pressure, and combined fan and motor efficiencies. Used by HVAC engineers and system designers to select appropriately sized fan motors. | Calculates the friction force resisting relative motion between two surfaces from the normal force and the coefficient of friction. Use it in braking, clamping, or sliding contact design problems. |