Skip to main content

Convert Foot-pounds-force to Ounce-force-inches

Instantly convert Foot-pounds-force (ft·lbf) to Ounce-force-inches (oz·in) with our free online calculator.

Reviewed by Christopher FloiedUpdated

Formula: ft·lbf to oz·inmultiply by 192

Reference Table

Foot-pounds-force (ft·lbf)Ounce-force-inches (oz·in)
1192
5960.002
101920
254800.01
509600.02
10019200

How to Convert Foot-pounds-force to Ounce-force-inches

Formula

To convert Foot-pounds-force (ft·lbf) to Ounce-force-inches (oz·in): multiply by 192

Step-by-Step

  1. Start with your value in Foot-pounds-force (ft·lbf).
  2. Multiply by 192 to perform the conversion.
  3. The result is your value expressed in Ounce-force-inches (oz·in).

Conversion Factor

1 ft·lbf = 192 oz·in

Reverse Factor

1 oz·in = 0.00520832 ft·lbf

Worked Example

Convert 25 Foot-pounds-force to Ounce-force-inches: 25 ft·lbf = 4800.01 oz·in

About Foot-pound-force (ft·lbf)

An imperial unit of torque equal to one pound-force applied at a one-foot lever arm (≈ 1.35582 N·m per NIST SP 811). Foot-pounds are the dominant US working unit for torque in automotive, industrial, and trades work: vehicle service manuals (passenger-car wheel-lug torque 80-100 ft·lbf; light-truck 130-160 ft·lbf; semi-truck 450-500 ft·lbf), automotive engine peak-torque specifications (US passenger cars typically 130-400 ft·lbf; full-size pickup diesel 800-1,000 ft·lbf; Dodge Challenger Hellcat Redeye 707 ft·lbf), US-made torque-wrench scales (Snap-On, Mac, Matco), helicopter and small-aircraft propeller/prop-strike inspection criteria, ASME B16 flange-bolt torque tables, and firearms barrel-threading specifications. Critical engineer's-eye distinction: ft·lbf as TORQUE (a vector moment) is dimensionally identical to ft·lb as ENERGY (a scalar work integral) — both are pound-force × foot — but they describe different physical quantities and must not be conflated when balancing power equations. Convert ft·lbf to N·m by multiplying by 1.356; to in·lbf by multiplying by 12.

About Ounce-force-inch (oz·in)

An imperial unit of torque equal to one ounce-force at a one-inch lever arm (≈ 0.00706155 N·m, exactly 1/192 of a ft·lbf since 1 lb = 16 oz and 1 ft = 12 in). Ounce-inches are the US working unit for fractional-horsepower motor torque specifications under NEMA standards and stepper-motor data sheets: stepper motors (NEMA-11 16-25 oz·in, NEMA-17 30-90 oz·in, NEMA-23 60-300 oz·in, NEMA-34 300-1,200 oz·in), small DC and BLDC motors for robotics and electromechanical actuators, RC servos (a typical analog hobby servo is 30-80 oz·in; high-torque digital servos reach 600 oz·in), instrument-grade torque measurement (precision torque sensors and calibrators), and small-appliance / electromechanical device design (camera lens autofocus motors, optical-disc drive spindles, paper-feed motors in printers / ATMs / currency-counters). At this scale oz·in provides finer resolution than in·lbf for specifying startup torque and continuous-duty ratings. Convert oz·in to N·m by multiplying by 0.00706; to kgf·cm by multiplying by 0.072.

Quick Facts

  • 1 Foot-pound-force equals 192 Ounce-force-inches
  • 1 Ounce-force-inch equals 0.00520832 Foot-pounds-force
  • Foot-pound-force is a unit of torque
  • Ounce-force-inch is a unit of torque
  • This conversion is commonly used in automotive maintenance, structural engineering, and manufacturing
  • The Foot-pound-force belongs to the imperial system

Common Foot-pound-force to Ounce-force-inch Conversions

Foot-pounds-force (ft·lbf)Ounce-force-inches (oz·in)
0.011.92
0.119.2
0.2548.0001
0.596.0002
1192
2384.001
3576.001
5960.002
101920
152880.01
203840.01
254800.01
509600.02
7514400
10019200
25048000.1
50096000.2
1000192000
5000960002
100001920000

Understanding Foot-pounds-force

The Foot-pound-force (symbol: ft·lbf) is a unit of torque. An imperial unit of torque equal to one pound-force applied at a one-foot lever arm (≈ 1.35582 N·m per NIST SP 811). Foot-pounds are the dominant US working unit for torque in automotive, industrial, and trades work: vehicle service manuals (passenger-car wheel-lug torque 80-100 ft·lbf; light-truck 130-160 ft·lbf; semi-truck 450-500 ft·lbf), automotive engine peak-torque specifications (US passenger cars typically 130-400 ft·lbf; full-size pickup diesel 800-1,000 ft·lbf; Dodge Challenger Hellcat Redeye 707 ft·lbf), US-made torque-wrench scales (Snap-On, Mac, Matco), helicopter and small-aircraft propeller/prop-strike inspection criteria, ASME B16 flange-bolt torque tables, and firearms barrel-threading specifications. Critical engineer's-eye distinction: ft·lbf as TORQUE (a vector moment) is dimensionally identical to ft·lb as ENERGY (a scalar work integral) — both are pound-force × foot — but they describe different physical quantities and must not be conflated when balancing power equations. Convert ft·lbf to N·m by multiplying by 1.356; to in·lbf by multiplying by 12.

It belongs to the imperial measurement system.

Foot-pounds-force are commonly used in automotive maintenance, structural engineering, and manufacturing.

Understanding Ounce-force-inches

The Ounce-force-inch (symbol: oz·in) is a unit of torque. An imperial unit of torque equal to one ounce-force at a one-inch lever arm (≈ 0.00706155 N·m, exactly 1/192 of a ft·lbf since 1 lb = 16 oz and 1 ft = 12 in). Ounce-inches are the US working unit for fractional-horsepower motor torque specifications under NEMA standards and stepper-motor data sheets: stepper motors (NEMA-11 16-25 oz·in, NEMA-17 30-90 oz·in, NEMA-23 60-300 oz·in, NEMA-34 300-1,200 oz·in), small DC and BLDC motors for robotics and electromechanical actuators, RC servos (a typical analog hobby servo is 30-80 oz·in; high-torque digital servos reach 600 oz·in), instrument-grade torque measurement (precision torque sensors and calibrators), and small-appliance / electromechanical device design (camera lens autofocus motors, optical-disc drive spindles, paper-feed motors in printers / ATMs / currency-counters). At this scale oz·in provides finer resolution than in·lbf for specifying startup torque and continuous-duty ratings. Convert oz·in to N·m by multiplying by 0.00706; to kgf·cm by multiplying by 0.072.

It belongs to the imperial measurement system.

Ounce-force-inches are commonly used in automotive maintenance, structural engineering, and manufacturing.

Why Convert Foot-pounds-force to Ounce-force-inches?

Converting between Foot-pounds-force and Ounce-force-inches is a frequent requirement for engineers, scientists, and students working with torque values. Different industries and regions favour different unit systems, so having a dependable conversion tool saves time and prevents errors in technical calculations. Whether you are verifying a specification sheet, cross-checking simulation results, or preparing a report for an international audience, accurate torque conversion is essential.

Frequently Asked Questions

How do I convert Foot-pounds-force to Ounce-force-inches?

An imperial unit of torque equal to one pound-force applied at a one-foot lever arm (≈ 1. To convert Foot-pounds-force to Ounce-force-inches, multiply by 192. For example, 25 ft·lbf equals 4800.01 oz·in.

How many Ounce-force-inches are in 1 Foot-pound-force?

There are 192 Ounce-force-inches in 1 Foot-pound-force.

How many Foot-pounds-force are in 1 Ounce-force-inch?

There are 0.00520832 Foot-pounds-force in 1 Ounce-force-inch.

What is the formula for Foot-pound-force to Ounce-force-inch conversion?

The formula is: multiply by 192. This means 1 ft·lbf = 192 oz·in.

Is a Foot-pound-force bigger than a Ounce-force-inch?

No. One Foot-pound-force is smaller than one Ounce-force-inch because 1 ft·lbf equals 192 oz·in, which is greater than 1.

When do you need to convert between Foot-pounds-force and Ounce-force-inches?

An imperial unit of torque equal to one ounce-force at a one-inch lever arm (≈ 0. Foot-pound-force and Ounce-force-inch are both torque units, so conversion comes up whenever one source of information uses one unit and another uses the other — a classic cross-reference challenge in engineering, trade, travel, and everyday life.

More Torque Conversions

Related Tools