Convert 4 Pound-Force (lbf) to Poundal (pdl).

4 Pound-Force equals 128.696194 Poundal. Multiply 4 by 32.1740485564.

4 Pound-Force = 128.696194 Poundal

Worked example: converting Pound-Force to Poundal

Step 1 — start with the formula. pdl = lbf × 32.1740485564
Step 2 — substitute your figure. 4 lbf × 32.1740485564
Step 3 — read the result. 4 lbf = 128.696194 pdl
Step 4 — check it in reverse. lbf = pdl × 0.0310809502 returns 4 lbf, which matches the figure you started with.

Force Converter

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Decimals:

From

To

128.696194

4 lbf = 128.696194 pdl

Formula:

pdl = lbf × 32.1740485564

With your value: 4 lbf = 128.69619423 pdl

Other Pound-Force to Poundal conversions

1 lbf to pdl 2 lbf to pdl 3 lbf to pdl 5 lbf to pdl 6 lbf to pdl 7 lbf to pdl 8 lbf to pdl Full Pound-Force to Poundal converter

Pound-Force to Poundal Conversion Table

Pound-Force (lbf)	Poundal (pdl)
0.5	16.087024
1	32.174049
2	64.348097
5	160.870243
10	321.740486
15	482.610728
20	643.480971
25	804.351214
50	1,608.702428
100	3,217.404856
250	8,043.512139
500	16,087.024278
1000	32,174.048556

Poundal to Pound-Force Conversion Table

Poundal (pdl)	Pound-Force (lbf)
0.5	0.01554
1	0.031081
2	0.062162
5	0.155405
10	0.31081
15	0.466214
20	0.621619
25	0.777024
50	1.554048
100	3.108095
250	7.770238
500	15.540475
1000	31.08095

Where these values come from

Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

Pound-Force (lbf)

Force

Exact conversion

Derived from the newton (1 N = 1 kg·m/s²). Gravitational units use the standard acceleration 9.806 65 m/s² exactly.

Source: NIST Special Publication 811, Guide for the Use of the International System of Units

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

Poundal (pdl)

Force

Exact conversion

Derived from the newton (1 N = 1 kg·m/s²). Gravitational units use the standard acceleration 9.806 65 m/s² exactly.

Source: NIST Special Publication 811, Guide for the Use of the International System of Units

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

How to Convert Pound-Force to Poundal

To convert from Pound-Force (lbf) to Poundal (pdl), multiply the value by 32.1740485564.

Formula: pdl = lbf × 32.1740485564

Reverse: lbf = pdl × 0.0310809502

Step-by-Step Example

Start with your value in Pound-Force. For example: 5 lbf
Multiply by the conversion factor: 5 x 32.1740485564
The result is: 160.870243 pdl

About Pound-Force

Pound-force (lbf) is a unit of force in the English Engineering system. It is equal to the gravitational force exerted on a mass of one avoirdupois pound on the surface of Earth.

Common uses: aerospace, automotive engineering, US industry.

About Poundal

The poundal (pdl) is a unit of force. One poundal equals 0.1382549544 newtons. UnitConvertLab converts it against every other force unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: force calculations, engineering and science, education.

Frequently Asked Questions

What is 4 Pound-Force in Poundal?

4 Pound-Force equals 128.696194 Poundal.

How many Poundal are in 1 Pound-Force?

There are exactly 32.1740485564 Poundal in 1 Pound-Force. This means the conversion factor from Pound-Force to Poundal is 32.1740485564.

What is the formula to convert Pound-Force to Poundal?

The formula to convert Pound-Force to Poundal is: pdl = lbf × 32.1740485564. For example, to convert 10 Pound-Force to Poundal, you would multiply 10 by 32.1740485564.

What is a Pound-Force?