# Inch-Pounds to Foot-Pounds Converter

URL: https://speedycalculator.com/calculators/conversion/inch-pounds-to-foot-pounds/
Last updated: 2026-10-25

> Convert pound-inches (lbf·in) to pound-feet (lbf·ft): 1 pound-inch = 0.083333333 lbf·ft, so multiply by 0.083333333 or divide by 12. Both fields are editable, so you can also type in pound-feet and get pound-inches back.

## Inputs

- Pound-inches (lbf·in)

## Results

- Pound-feet

## Formula

```
1 lbf·in = 0.083333333 lbf·ft
1 lbf·ft = 12 lbf·in
lbf·ft = lbf·in × 0.083333333
```

## Explanation

Twelve inch-pounds equal one foot-pound. Torque wrenches are sold in both scales; small wrenches read in in-lb and larger ones in ft-lb.

### How to use the Inch-Pounds to Foot-Pounds Converter

- Type the number of pound-inches into the **Pound-inches** field. Decimals such as 60 are fine.
- Read the answer in **Pound-feet** – it updates as you type, with no button to press.
- To convert the other way, type into **Pound-feet** and the pound-inches are recalculated.
- Press **Copy results** to copy both values with the page title, or **Copy link** to share this exact conversion.

This page converts only lbf·in ⇄ lbf·ft. Need a different unit? Use the general torque converter, where you can choose any “from” and “to” unit.

### How it works

Both units measure torque, so they are always in the same ratio: one pound-inch equals 0.083333333 pound-feet. The calculator multiplies the number of pound-inches you type by 0.083333333 to give pound-feet, and when you type into the pound-feet field it divides by the same factor to give pound-inches. Because the ratio never changes, doubling the pound-inches always doubles the pound-feet. Results are calculated at full precision and rounded only for display (up to eight decimal places, with very large or small values shown in scientific notation).

### How to convert pound-inches to pound-feet

- Write down the value in pound-inches, for example **120 lbf·in**.
- Multiply by the conversion factor 0.083333333 (because 1 pound-inch = 0.083333333 lbf·ft).
- 120 × 0.083333333 = **10 lbf·ft**.
- To go back from pound-feet to pound-inches, divide by 0.083333333 – or multiply by 12.

### lbf·in to lbf·ft conversion table

Pound-inchesPound-feetPound-feetPound-inches12 lbf·in1 lbf·ft1 lbf·ft12 lbf·in24 lbf·in2 lbf·ft2 lbf·ft24 lbf·in36 lbf·in3 lbf·ft5 lbf·ft60 lbf·in48 lbf·in4 lbf·ft10 lbf·ft120 lbf·in60 lbf·in5 lbf·ft20 lbf·ft240 lbf·in100 lbf·in8.3333333 lbf·ft50 lbf·ft600 lbf·in120 lbf·in10 lbf·ft100 lbf·ft1,200 lbf·in180 lbf·in15 lbf·ft1,000 lbf·ft12,000 lbf·in240 lbf·in20 lbf·ft

### What is a pound-inch?

The pound-inch (in-lb) is 1/12 of a pound-foot, about 0.113 N·m, used for small fasteners and electrical terminals.

### What is a pound-foot?

The pound-foot (often written ft-lb) is the U.S. unit of torque, about 1.356 N·m. Wheel-nut and engine torque in U.S. manuals use it.

### Quick mental conversion

For a fast estimate, multiply pound-inches by about **0.083** to get pound-feet; the error is about 0.4%. Use the calculator above when you need the exact figure.

### Common mistakes to avoid

Confusing ft-lb with in-lb (a factor of 12), and treating torque in n·m as energy in joules.

## Worked example

Inputs — Pound-inches: 120 lbf·in.

Results — **Pound-feet = 10 lbf·ft**.

## FAQ

**How many ft-lb is 120 in-lb?**
10 ft-lb.

**How many in-lb in a ft-lb?**
12.

**How many pound-feet are in one pound-inch?**
1 lbf·in = 0.083333333 lbf·ft.

**How many pound-inches are in one pound-foot?**
1 lbf·ft = 12 lbf·in.

**How do I convert pound-inches to pound-feet?**
Multiply the number of pound-inches by 0.083333333. For example, 120 lbf·in × 0.083333333 = 10 lbf·ft.

**How do I convert pound-feet back to pound-inches?**
Divide by 0.083333333 (or multiply by 12), or simply type the value into the pound-feet field above.

**What is 100 lbf·in in pound-feet?**
100 lbf·in = 8.3333333 lbf·ft.

**Is this conversion exact?**
Yes. The factor comes from the official definitions of both units (NIST and the SI), so the only difference you may see is rounding in the last displayed digit.

**Can I convert to other units on this page?**
This page converts only between pound-inches and pound-feet. To pick any torque unit, use the general torque converter linked under Related calculators.

**What formula does the Inch-Pounds to Foot-Pounds Converter use?**
1 lbf·in = 0.083333333 lbf·ft.


## Sources

- [NIST Special Publication 811 – Guide for the Use of the International System of Units](https://www.nist.gov/pml/special-publication-811)
- [NIST Handbook 44 Appendix C – General tables of units of measurement](https://www.nist.gov/pml/owm/nist-handbook-44-current-edition)