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Both calculators run independently — change the inputs on either side to compare results.
Engineering
Pipe Pressure Drop Calculator
Compute the frictional pressure drop along a straight pipe section using the Darcy-Weisbach equation. Essential for pipe sizing, pump selection, and verifying that flow rates are achievable in a piping network.
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Engineering
Gear Ratio & Speed Calculator
Calculates the output speed of a two-gear meshing pair given the driver and driven tooth counts and the input speed. Use it when selecting gear pairs for motors, gearboxes, or power-transmission drives. (For output torque, multiply input torque by the gear ratio R = drivenTeeth / driverTeeth and by mesh efficiency — see the explanation below.)
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Key differences
| Pipe Pressure Drop Calculator | Gear Ratio & Speed Calculator | |
|---|---|---|
| Category | Engineering | Engineering |
| Inputs required | 5 | 3 |
| Result | Pressure Drop (Pa) | Output Speed (RPM) |
| What it does | Compute the frictional pressure drop along a straight pipe section using the Darcy-Weisbach equation. Essential for pipe sizing, pump selection, and verifying that flow rates are achievable in a piping network. | Calculates the output speed of a two-gear meshing pair given the driver and driven tooth counts and the input speed. Use it when selecting gear pairs for motors, gearboxes, or power-transmission drives. (For output torque, multiply input torque by the gear ratio R = drivenTeeth / driverTeeth and by mesh efficiency — see the explanation below.) |