In 1 poundals there are 0.0000140981 tonne-force. Meanwhile in 1 tonne-force there are 70,931.611877 poundals. Keep reading to learn more about each unit of measure and how they are calculated. Or just use the Tonne-force to Poundals calculator above to convert any number.
* Values rounded to 6 decimal places for readability
To convert poundals (pdl) to tonne-force (tf), use a two-step force conversion: first to pound-force (lbf), then to tonne-force.
Step 1: Poundals to pound-force
1 pdl = 0.03108095 lbf
So: lbf = pdl × 0.03108095
Step 2: Pound-force to tonne-force
1 tf = 2,204.62262185 lbf
So: tf = lbf ÷ 2,204.62262185
Single-step formula (pdl to tf):
tf = pdl × 0.00001410026
Example:
If you have 14 pdl, then:
tf = 14 × 0.00001410026 = 0.00019740 tf (rounded)
Use these factors any time you need a clean poundal to tonne-force conversion for physics, engineering, or unit checks.
A poundal (pdl) is a unit of force in the foot-pound-second (FPS) system. It’s the force needed to accelerate a 1-pound mass at 1 foot per second squared (1 ft/s²). You may see poundals in older physics texts and engineering notes.
Tonne-force (tf) is a gravitational unit of force based on a 1-tonne mass under standard gravity. It equals the weight of 1,000 kg at standard gravity. Tonne-force is also written as metric ton-force or tf (sometimes “tf” is used for short).
Convert poundals to tonne-force by converting poundals to newtons, then newtons to tonne-force. These relationships make it simple:
So:
Use this direct formula:
For quick estimates, you can round it:
1 tonne-force equals 9,806.65 newtons, and each poundal equals 0.138254954376 newtons. That gives:
So it takes a little under 71,000 poundals to equal 1 tonne-force.
Because poundal is a small unit and tonne-force is large, the result is tiny:
A poundal is based on a 1-pound mass and a 1 ft/s² acceleration. A tonne-force is based on a 1,000 kg mass under gravity. The size gap between the units is huge, so the converted value in tf is very small.
Yes, for tonne-force. Tonne-force is tied to standard gravity, defined as:
Poundal is defined from mass and acceleration, so it doesn’t rely on gravity. The gravity link enters when you express force as tonne-force.
Newtons (N) are SI units based on mass and acceleration:
Tonne-force is based on weight under standard gravity:
Newtons work best for physics and engineering. Tonne-force is common in load ratings and older specs.
No. “Ton” can mean different things.
Always confirm which “ton” your source uses.
Yes, and it often reads cleaner. Since the multiplier is small:
This helps prevent mistakes when working with large pdl values.
Example: Convert 100,000 pdl to tf.
So 100,000 poundals is about 1.41 tonne-force.
This conversion can help when you:
Common errors include:
The Calculate Box tool to convert poundals to tonne-force uses the open source script Convert.js to convert units of measurement. To use this tool, simply type a poundals value in the box and have it instantly converted to tonne-force.