Quick Answer: To convert inch-pounds to foot-pounds, divide by 12.

200 inch-pounds = 16.67 foot-pounds 240 inch-pounds = 20 foot-pounds 600 inch-pounds = 50 foot-pounds

How to Convert Inch-Pounds to Foot-Pounds

The Formula:

Foot-Pounds (ft-lb) = Inch-Pounds (in-lb) ÷ 12

That's it. One step. Divide your inch-pound value by 12 and you have foot-pounds. This works because one foot equals 12 inches — so one foot-pound of torque is exactly equal to 12 inch-pounds of torque.

Reverse conversion (ft-lb to in-lb):

Inch-Pounds (in-lb) = Foot-Pounds (ft-lb) × 12

Multiply your foot-pound value by 12 to convert back to inch-pounds.

Instant Conversion Table: Inch-Pounds to Foot-Pounds

Here are the most commonly searched in-lb to ft-lb conversions, pre-calculated for instant reference:

12 in-lb = 1.00 ft-lb 24 in-lb = 2.00 ft-lb 36 in-lb = 3.00 ft-lb 48 in-lb = 4.00 ft-lb 60 in-lb = 5.00 ft-lb 72 in-lb = 6.00 ft-lb 84 in-lb = 7.00 ft-lb 96 in-lb = 8.00 ft-lb 100 in-lb = 8.33 ft-lb 120 in-lb = 10.00 ft-lb 144 in-lb = 12.00 ft-lb 150 in-lb = 12.50 ft-lb 160 in-lb = 13.33 ft-lb 180 in-lb = 15.00 ft-lb 200 in-lb = 16.67 ft-lb 240 in-lb = 20.00 ft-lb 300 in-lb = 25.00 ft-lb 360 in-lb = 30.00 ft-lb 400 in-lb = 33.33 ft-lb 480 in-lb = 40.00 ft-lb 500 in-lb = 41.67 ft-lb 600 in-lb = 50.00 ft-lb 720 in-lb = 60.00 ft-lb 840 in-lb = 70.00 ft-lb 960 in-lb = 80.00 ft-lb 1000 in-lb = 83.33 ft-lb 1200 in-lb = 100.00 ft-lb

Bookmark this table for quick reference during any mechanical, automotive, or engineering task.

Specific Conversions: Direct Answers to Common Searches

200 Inch-Pounds to Foot-Pounds

200 ÷ 12 = 16.67 ft-lb

200 in-lb equals 16.67 foot-pounds. This value commonly appears in automotive torque specs — particularly for spark plugs, oil drain plugs, and sensor fittings on smaller engines.

240 Inch-Pounds to Foot-Pounds

240 ÷ 12 = 20 ft-lb

240 in-lb equals exactly 20 foot-pounds. A clean, whole number conversion — common in motorcycle torque specs and small engine fastener settings.

600 Inch-Pounds to Foot-Pounds

600 ÷ 12 = 50 ft-lb

600 in-lb equals 50 foot-pounds. This range appears frequently in medium-duty automotive applications — cylinder head fasteners on smaller engines, differential cover bolts, and suspension component torque specs.

120 Inch-Pounds to Foot-Pounds

120 ÷ 12 = 10 ft-lb

120 in-lb equals exactly 10 foot-pounds. A frequently referenced value for light-duty fasteners — brake caliper guide pins, accessory bracket bolts, and interior trim components.

100 Inch-Pounds to Foot-Pounds

100 ÷ 12 = 8.33 ft-lb

100 in-lb equals 8.33 foot-pounds. Common in precision fastening applications where lower torque values prevent thread stripping on aluminum components and plastic-mounted hardware.

88 Inch-Pounds to Foot-Pounds

88 ÷ 12 = 7.33 ft-lb

88 in-lb equals 7.33 foot-pounds. This specific value appears in several OEM torque specifications for valve cover bolts, oil pan fasteners, and sensor mounting hardware across US, European, and Asian vehicle platforms.

71 Inch-Pounds to Foot-Pounds

71 ÷ 12 = 5.92 ft-lb

71 in-lb equals 5.92 foot-pounds. This value is frequently specified for throttle body mounting bolts, intake manifold fasteners on smaller displacement engines, and similar precision applications.

Additional High-Search Conversions

150 in-lb to ft-lb: 150 ÷ 12 = 12.50 ft-lb 180 in-lb to ft-lb: 180 ÷ 12 = 15.00 ft-lb 300 in-lb to ft-lb: 300 ÷ 12 = 25.00 ft-lb 400 in-lb to ft-lb: 400 ÷ 12 = 33.33 ft-lb 500 in-lb to ft-lb: 500 ÷ 12 = 41.67 ft-lb 48 in-lb to ft-lb: 48 ÷ 12 = 4.00 ft-lb 36 in-lb to ft-lb: 36 ÷ 12 = 3.00 ft-lb

What Is an Inch-Pound?

An inch-pound (in-lb or in·lb) is a unit of torque — rotational force — in the US customary system. It represents the force required to rotate an object when one pound of force is applied at a distance of one inch from the pivot point.

Where inch-pounds are used:

• Torque specs for small fasteners, sensors, and precision components
• Electronics assembly — circuit boards, connector housing screws
• Small engine components — carburetors, valve covers, timing covers
• Medical devices and aerospace applications requiring precise, low-torque settings
• Bicycle component assembly — stem bolts, brake hardware, derailleur mounting
• Appliance repair — motor mounts, panel screws, internal hardware

Inch-pounds are the preferred unit when foot-pounds would produce an impractically small decimal — for example, specifying a bolt at "0.67 ft-lb" is less intuitive than "8 in-lb." Engineers and mechanics choose the unit that produces cleaner, more usable numbers for the application.

What Is a Foot-Pound?

A foot-pound (ft-lb or ft·lb) is the larger, more commonly recognized torque unit in the US customary system. It represents one pound of force applied at a distance of one foot from the pivot point.

Where foot-pounds are used:

• Lug nut torque specifications (typically 80–120 ft-lb for passenger vehicles)
• Engine cylinder head bolts (varies widely by engine — 60–180 ft-lb is common)
• Suspension components — control arm bolts, strut mounts, wheel bearings
• Axle and drivetrain fasteners
• Heavy equipment and industrial machinery
• Structural bolt installation in construction

In the United States, foot-pounds are the standard torque unit in automotive service manuals, engineering drawings, and mechanical specifications. When your repair manual lists a torque value without qualification, it almost certainly means foot-pounds for any value over approximately 20.

Why Divide by 12? The Logic Behind the Conversion

The conversion factor of 12 is not arbitrary — it's pure geometry.

• 1 foot = 12 inches (by definition in the US customary system)
• Torque = Force × Distance
• 1 ft-lb = 1 lb × 1 foot = 1 lb × 12 inches = 12 in-lb

Therefore: 1 ft-lb = 12 in-lb, and 1 in-lb = 1/12 ft-lb = 0.0833 ft-lb.

The conversion is exact, not an approximation. There is no rounding error built into the relationship — only when the result of dividing a specific in-lb value by 12 is not a whole number do you get a decimal in the output.

This is also why torque specs that appear in inch-pounds are often values divisible by 12 — engineers deliberately choose specifications that produce clean foot-pound equivalents where both units are relevant.

Inch-Pounds vs Foot-Pounds: Which Unit Should You Use?

The right unit depends on the magnitude of the torque value and the application context.

Use inch-pounds when:

• The torque value is less than approximately 200 in-lb (16.67 ft-lb)
• Working with small fasteners, electronics, or precision components
• The service manual specifies in-lb (common for Japanese and European vehicles in certain markets)
• You're using a small beam-style or click torque wrench calibrated in inch-pounds

Use foot-pounds when:

• The torque value exceeds 20 ft-lb (240 in-lb)
• Working on major structural fasteners — lug nuts, head bolts, axle nuts
• Your torque wrench is calibrated in ft-lb (most full-size automotive torque wrenches)
• Following US OEM service documentation for passenger vehicles and trucks

The confusion zone — 12 to 25 ft-lb (144 to 300 in-lb): This range is where both units appear in service documentation, and where unit mix-ups most commonly cause over- or under-torquing. Always confirm which unit your spec is expressed in before applying torque.

For broader unit conversion needs across mechanical and engineering contexts, a unit converter handles multiple measurement systems simultaneously — useful when working across both metric and US customary specifications on the same project.

Practical Use Cases: When You Need This Conversion

Automotive Repair and Maintenance

Torque specifications in US vehicle service manuals are frequently given in foot-pounds for major fasteners and inch-pounds for smaller hardware. A single oil change involves multiple torque specs — the drain plug might be specified at 25 ft-lb while the filter housing bolts are specified at 89 in-lb (7.42 ft-lb).

When your torque wrench only has one scale and your spec is in the other unit, the in-lb to ft-lb converter resolves the discrepancy instantly. Common automotive applications include:

• Spark plugs: 13–20 ft-lb (156–240 in-lb) depending on thread size and engine material
• Oil drain plugs: 25–30 ft-lb (300–360 in-lb) for most passenger vehicles
• Valve cover bolts: 71–106 in-lb (5.92–8.83 ft-lb) — almost always specified in in-lb
• Lug nuts: 80–120 ft-lb (960–1440 in-lb) — almost always specified in ft-lb
• Brake caliper bolts: 25–44 ft-lb (300–528 in-lb) depending on vehicle

Automotive professionals tracking vehicle purchase and financing costs alongside technical specifications can use an auto loan calculator to evaluate the full cost of ownership — relevant when budgeting for both the vehicle and the tools required to maintain it.

Motorcycle and Small Engine Work

Motorcycles and small engines typically use inch-pounds throughout their torque specifications — values are low enough that foot-pound fractions would be impractical. A motorcycle engine rebuild involves dozens of in-lb specs ranging from 18 in-lb (1.5 ft-lb) for small cover screws to 200 in-lb (16.67 ft-lb) for cylinder head fasteners on single-cylinder engines.

Converting between units is routine work for any technician servicing two-wheelers, ATVs, outboard motors, or small power equipment.

Mechanical Engineering and Manufacturing

Design engineers specify fastener torque in the unit most appropriate to the application's scale. In US manufacturing environments, you'll encounter both units within the same assembly drawing — often in-lb for panel hardware and ft-lb for structural connections. Quality control and assembly technicians need rapid, reliable conversion to verify torque wrenches are set correctly before assembly begins.

DIY Home Mechanics and Tool Calibration

Home mechanics working from manufacturer service manuals or online repair guides encounter torque specs in both units. A percentage calculator paired with this converter helps DIY mechanics cross-check whether their torque wrench (often calibrated only in ft-lb) is being set to the correct equivalent value for in-lb specifications.

Converting Inch-Pounds to Metric (Newton-Meters)

Many international service manuals — particularly from German, Japanese, and Korean manufacturers — specify torque in Newton-meters (Nm). Here are the key conversion relationships:

From inch-pounds to Newton-meters: 1 in-lb = 0.113 Nm Nm = in-lb × 0.113

From foot-pounds to Newton-meters: 1 ft-lb = 1.356 Nm Nm = ft-lb × 1.356

Quick metric reference for common values:

• 88 in-lb = 9.94 Nm (≈ 10 Nm)
• 100 in-lb = 11.3 Nm
• 120 in-lb = 13.56 Nm
• 200 in-lb = 22.6 Nm
• 10 ft-lb = 13.56 Nm
• 20 ft-lb = 27.12 Nm
• 50 ft-lb = 67.8 Nm

When working across metric and US customary specifications on international vehicle platforms, having all three units — in-lb, ft-lb, and Nm — cross-referenced prevents the compounding errors that occur when converting through multiple steps.

Common Mistakes When Converting In-lb to Ft-lb

Mistake 1 — Multiplying Instead of Dividing The most frequent error. To go from in-lb to ft-lb, you divide by 12. To go from ft-lb to in-lb, you multiply by 12. Reversing these operations produces a result that is 144 times off — catastrophically wrong for any precision fastening application.

Mistake 2 — Confusing lb-ft and ft-lb These are the same unit written in different orders. Pound-feet (lb·ft) and foot-pounds (ft·lb) both describe the same torque measurement in US customary units. The notation varies by source — some SAE documents use lb·ft, most automotive service manuals use ft-lb. Don't let the notation order create doubt about the unit.

Mistake 3 — Confusing Torque with Energy Foot-pounds (ft-lb) is used for both torque and energy/work in the US customary system. The context always makes clear which is intended — torque specs in mechanical applications are always rotational force, not energy. Newton-meters (Nm) has the same dual use in metric.

Mistake 4 — Rounding Too Early When performing multi-step conversions (for example, in-lb → ft-lb → Nm), rounding at the first step introduces errors that compound at each subsequent step. Always carry at least 3–4 decimal places through intermediate calculations and round only at the final result.

Mistake 5 — Applying the Spec to the Wrong Fastener This isn't a conversion error — it's an application error. A torque spec on one bolt in a pattern doesn't apply to all bolts in that assembly. Always verify which specific fastener a torque value refers to before applying. An incorrect torque on the wrong fastener can be as damaging as a wrong unit conversion.

Conclusion

Converting inch-pounds to foot-pounds is a one-step calculation: divide by 12. Whether you're torquing a valve cover bolt at 88 in-lb, setting a drain plug at 200 in-lb, or referencing a cylinder fastener at 600 in-lb — the math is always the same and the result is always exact.

Use the converter above for any in-lb to ft-lb calculation, bookmark the reference table for workshop use, and check the specific conversion sections for the most commonly searched torque values. Accurate torque application protects threads, prevents fastener failure, and keeps mechanical assemblies within manufacturer tolerances — and that starts with getting the units right.

For additional measurement and conversion needs in your engineering or mechanical work, a unit converter covers a broad range of measurement types beyond torque — including length, mass, pressure, and temperature — in a single tool.

All conversions on this page are mathematically exact based on the fixed relationship 1 ft = 12 in. For critical engineering or safety applications, always verify torque specifications against the official manufacturer service documentation for your specific application.