HP to in-lb/sec Calculator

Convert horsepower to inch-pounds per second instantly.

HP to in-lb/sec Converter
RESULT

This converter expresses horsepower in inch-pounds per second — a convenient unit for small motors, actuators, and precision mechanisms where inch-pounds are the natural torque unit.

Quick answer: 1 HP = 6,600 in-lb/sec (550 ft-lb/sec × 12). So 1 HP equals 6,600 inch-pounds of work per second.

HP to in-lb/sec Formula

Formula
in-lb/sec = HP × 6,600
From 550 ft-lb/sec × 12 inches per foot.

How to Use This Calculator

  1. Enter horsepower.
  2. Read inch-pounds per second.

Worked Example

Worked Example
in-lb/sec = 1 × 6,600 = 6,600 in-lb/sec
calchorsepower.com Engineering Team
Automotive & mechanical calculation specialists

This calculator uses standard published formulas, verified against known input/output pairs.

✓ Formula verified

Frequently Asked Questions

One horsepower equals 6,600 inch-pounds per second, which is 550 foot-pounds per second multiplied by 12 inches per foot.

Multiply horsepower by 6,600.

It's useful for small motors, servos, and actuators where torque is naturally measured in inch-pounds rather than foot-pounds.

One foot-pound equals 12 inch-pounds, so 550 ft-lb/sec (1 HP) equals 6,600 in-lb/sec.

Divide inch-pounds per second by 6,600.