Convert Ounce-force-inches to Foot-pounds-force
Instantly convert Ounce-force-inches (oz·in) to Foot-pounds-force (ft·lbf) with our free online calculator.
Formula: oz·in to ft·lbf — multiply by 0.00520832
Reference Table
| Ounce-force-inches (oz·in) | Foot-pounds-force (ft·lbf) |
|---|---|
| 1 | 0.00520832 |
| 5 | 0.0260416 |
| 10 | 0.0520832 |
| 25 | 0.130208 |
| 50 | 0.260416 |
| 100 | 0.520832 |
How to Convert Ounce-force-inches to Foot-pounds-force
Formula
To convert Ounce-force-inches (oz·in) to Foot-pounds-force (ft·lbf): multiply by 0.00520832
Step-by-Step
- Start with your value in Ounce-force-inches (oz·in).
- Multiply by 0.00520832 to perform the conversion.
- The result is your value expressed in Foot-pounds-force (ft·lbf).
Conversion Factor
1 oz·in = 0.00520832 ft·lbf
Reverse Factor
1 ft·lbf = 192 oz·in
Worked Example
Convert 25 Ounce-force-inches to Foot-pounds-force: 25 oz·in = 0.130208 ft·lbf
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.
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.
Quick Facts
- 1 Ounce-force-inch equals 0.00520832 Foot-pounds-force
- 1 Foot-pound-force equals 192 Ounce-force-inches
- Ounce-force-inch is a unit of torque
- Foot-pound-force is a unit of torque
- This conversion is commonly used in automotive maintenance, structural engineering, and manufacturing
- The Ounce-force-inch belongs to the imperial system
Common Ounce-force-inch to Foot-pound-force Conversions
| Ounce-force-inches (oz·in) | Foot-pounds-force (ft·lbf) |
|---|---|
| 0.01 | 0.0000520832 |
| 0.1 | 0.000520832 |
| 0.25 | 0.00130208 |
| 0.5 | 0.00260416 |
| 1 | 0.00520832 |
| 2 | 0.0104166 |
| 3 | 0.015625 |
| 5 | 0.0260416 |
| 10 | 0.0520832 |
| 15 | 0.0781249 |
| 20 | 0.104166 |
| 25 | 0.130208 |
| 50 | 0.260416 |
| 75 | 0.390624 |
| 100 | 0.520832 |
| 250 | 1.30208 |
| 500 | 2.60416 |
| 1000 | 5.20832 |
| 5000 | 26.0416 |
| 10000 | 52.0832 |
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.
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.
Why Convert Ounce-force-inches to Foot-pounds-force?
Converting between Ounce-force-inches and Foot-pounds-force 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 Ounce-force-inches to Foot-pounds-force?
An imperial unit of torque equal to one ounce-force at a one-inch lever arm (≈ 0. To convert Ounce-force-inches to Foot-pounds-force, multiply by 0.00520832. For example, 25 oz·in equals 0.130208 ft·lbf.
How many Foot-pounds-force are in 1 Ounce-force-inch?
There are 0.00520832 Foot-pounds-force in 1 Ounce-force-inch.
How many Ounce-force-inches are in 1 Foot-pound-force?
There are 192 Ounce-force-inches in 1 Foot-pound-force.
What is the formula for Ounce-force-inch to Foot-pound-force conversion?
The formula is: multiply by 0.00520832. This means 1 oz·in = 0.00520832 ft·lbf.
Is a Ounce-force-inch bigger than a Foot-pound-force?
Yes. One Ounce-force-inch is larger than one Foot-pound-force because 1 oz·in equals 0.00520832 ft·lbf, which is less than 1.
When do you need to convert between Ounce-force-inches and Foot-pounds-force?
An imperial unit of torque equal to one pound-force applied at a one-foot lever arm (≈ 1. Ounce-force-inch and Foot-pound-force 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.