Convert Pound-force Inches to Ounce-force Inches
Pound-force Inch (lbf·in) to Ounce-force Inch (ozf·in) unit conversion — enter any value below to get an instant result, or use the table for common values.
Results from this calculator are estimates provided for general informational purposes only, based on formulas, rates, and standards commonly accepted as of 2026. Figures may differ slightly from other calculators or professional sources due to rounding methods, differing assumptions, or regional regulations, and rules may change over time. Always consult a qualified professional — such as a financial advisor, healthcare provider, or other relevant specialist — before making decisions based on these results.
Result
1 lbf·in = 16 ozf·in
1 Pound-force Inch = 16 Ounce-force Inches
1 Ounce-force Inch = 0.0625 Pound-force Inches
1 lbf·in in every supported unit
Conversion chart: Pound-force Inch to Ounce-force Inches
Conversion table
| Pound-force Inch (lbf·in) | Ounce-force Inch (ozf·in) |
|---|---|
| 0.01 lbf·in | 0.16 ozf·in |
| 0.1 lbf·in | 1.6 ozf·in |
| 1 lbf·in | 16 ozf·in |
| 2 lbf·in | 32 ozf·in |
| 3 lbf·in | 48 ozf·in |
| 5 lbf·in | 80 ozf·in |
| 10 lbf·in | 160 ozf·in |
| 20 lbf·in | 320 ozf·in |
| 50 lbf·in | 800 ozf·in |
| 100 lbf·in | 1600 ozf·in |
| 1000 lbf·in | 16000 ozf·in |
Pound-force Inch (lbf·in)
Definition: A finer US customary structural moment unit equal to the turning effect of a 1-pound-force applied 1 inch from the pivot, used when foot-scale units are too coarse.
History: Derived from pound-force foot via the standard 12-inches-per-foot relationship, applied to smaller structural connections, fasteners, and component-level bending analysis.
Current use: Used in the design of bolted connections, brackets, and smaller structural components where inch-scale precision is more appropriate than foot-scale moments.
Ounce-force Inch (ozf·in)
Definition: A small-scale US customary moment unit, equal to the turning effect of a 1-ounce-force applied 1 inch from the pivot.
History: Combines the smaller ounce-force unit with the inch for describing very light structural or mechanical bending moments too small to be conveniently expressed in pound-force inches.
Current use: Applied to light-duty bracket, latch, and small hardware component design where bending moments are minor.
Supported Units
| Unit | Symbol | In Newton Meters |
|---|---|---|
| Newton Meter | N·m | 1 N·m |
| Newton Centimeter | N·cm | 0.01 N·m |
| Newton Millimeter | N·mm | 0.001 N·m |
| Kilonewton Meter | kN·m | 1000 N·m |
| Kilogram-force Meter | kgf·m | 9.80665 N·m |
| Kilogram-force Centimeter | kgf·cm | 0.0980665 N·m |
| Pound-force Foot | lbf·ft | 1.3558179 N·m |
| Pound-force Inch | lbf·in | 0.11298483 N·m |
| Ounce-force Inch | ozf·in | 0.0070615518 N·m |
| Dyne Centimeter | dyn·cm | 1E-07 N·m |
About These Parameters
- Value
- The number you want to convert, expressed in the "From" unit. Accepts decimals.
- From Unit
- The moment of force unit your input value is currently measured in.
- To Unit
- The moment of force unit you want the result converted into. Use the swap button to flip From and To instantly.
How Moment of Force Conversion Works
The Formula
Every unit here is defined by a fixed multiplier relative to the newton meter. To convert a value from one unit to another:
result = value × (factor of "From" unit ÷ factor of "To" unit)
For Pound-force Inch → Ounce-force Inch: multiply by 16. For example, 1 lbf·in × 16 = 16 ozf·in.
Bending Moments in Beams and Structures
When a load is applied to a beam, it doesn't just push straight down — it creates an internal bending moment that varies along the beam's length, largest typically at mid-span or at a fixed support. Structural engineers calculate this moment (force × lever-arm distance) at every critical section and compare it against the beam or connection's moment capacity, which depends on the material's strength and the cross-section's geometry. Getting this comparison right is the central task of beam and frame design: too little capacity and the member yields or fractures; too much and the design wastes material and cost.
Moment vs. Torque: Same Physics, Different Context
Moment of force and torque share the exact same units and the same underlying formula (force × distance), but engineering convention reserves "moment" for bending and rotational-equilibrium problems in stationary structures — beams, columns, connections, foundations — and "torque" for twisting effects on rotating shafts, engines, and fasteners. There's no physical difference between a "1 N·m moment" and a "1 N·m torque"; the distinction is purely about which kind of problem an engineer is solving, which is why this site offers a separate Torque Converter for the rotational-drivetrain use case.
Example
1 lbf·in equals 16 ozf·in. For scale, a mid-span bending moment of 15,000 N·m (about 132761.19 lbf·in) is a realistic design value for a modest residential floor beam spanning several meters under normal loading — well within a typical steel or engineered-lumber section's capacity.
Frequently Asked Questions
How many Ounce-force Inches are in 1 Pound-force Inch?
1 Pound-force Inch (lbf·in) equals exactly 16 Ounce-force Inches (ozf·in).
What's the difference between moment of force and torque?
Physically, nothing — both are force multiplied by lever-arm distance, measured in the same units (newton meters or pound-force feet). "Moment" is the conventional term in structural and civil engineering for bending effects in beams, columns, and connections, while "torque" is the conventional term for twisting effects in rotating machinery like engines and fasteners.
Why do structural engineers use kilonewton meters instead of newton meters?
Real building and bridge bending moments routinely reach into the tens or hundreds of thousands of newton meters. Reporting "45,000 N·m" is unwieldy compared to "45 kN·m", so kilonewton meters keep structural calculation sheets and drawings readable, the same reasoning that leads American engineers to prefer kips over pounds-force for large loads.
How accurate are these conversions?
Every conversion factor used here is the exact, internationally recognized value (e.g. 1 lbf·ft = exactly 1.3558179483314 N·m, derived from the internationally standardized pound, foot, and standard gravity) — results are limited only by floating-point display precision, not by rounded conversion constants.