Convert Tonne-force to Poundals

Tonne-force

Accepts decimals and fractions, like 1.5 or 1 1/2.

Quick presets:

Keyboard shortcut: press S to swap units.

Poundals

Round to 2 decimals

Contextual examples

1 Tonne-force = 70,931.61 Poundals
10 Tonne-force = 709,316.12 Poundals
100 Tonne-force = 7,093,161.19 Poundals
1000 Tonne-force = 70,931,611.88 Poundals

Poundals to Tonne-force

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How many poundals in a tonne-force?

In 1 tonne-force there are 70,931.611877 poundals. Meanwhile in 1 poundals there are 0.0000140981 tonne-force. 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 for readability — use the calculator above for full precision

Related calculators

Use these next if you want similar conversions or tools.

Poundals to Tonne-force Tonne-force to Newtons Newtons to Poundals Tonne-force to Dynes Dynes to Poundals Tonne-force to Pound of force Pound of force to Poundals Tonne-force to Kip

How does this converter work?

The Calculate Box tool to convert tonne-force to poundals uses the open source script Convert.js to convert units of measurement. To use this tool, simply type a tonne-force value in the box and have it instantly converted to poundals.

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Convert Tonne-force to Poundals

Convert tonne-force to poundals in seconds with this simple calculator. Enter a value in tf to get the result in pdl, ready for reports, homework, or quick checks.

Tonne-force

Accepts decimals and fractions, like 1.5 or 1 1/2.

Quick presets:

Keyboard shortcut: press S to swap units.

Poundals

Round to 2 decimals

Contextual examples

1 Tonne-force = 70,931.61 Poundals
10 Tonne-force = 709,316.12 Poundals
100 Tonne-force = 7,093,161.19 Poundals
1000 Tonne-force = 70,931,611.88 Poundals

Poundals to Tonne-force

Swap

How many poundals in a tonne-force?

* Values rounded for readability — use the calculator above for full precision

How to convert tonne-force to poundals?

To convert tonne-force to poundals, use a fixed conversion factor based on standard gravity.

1 tonne-force (tf) = 9,806.65 newtons (N)
1 newton (N) = 7.23301385 poundals (pdl)
So, 1 tf = 9,806.65 × 7.23301385 = 70,930.73 pdl (about 70,931 pdl)

Conversion formula (tf to pdl):
poundals (pdl) = tonne-force (tf) × 70,930.73

Quick examples (1 to 10 tf):

1 tf = 70,930.73 pdl
5 tf = 354,653.65 pdl
10 tf = 709,307.30 pdl

Use this factor anytime you need a clear tonne-force to poundal conversion.

Frequently asked questions

What is tonne-force (tf)?

Tonne-force is a unit of force based on weight. It equals the force from gravity on a 1-metric-ton mass under standard gravity. You may also see it written as metric ton-force.

What is a poundal (pdl)?

A poundal is a unit of force from the foot-pound-second (FPS) system. It’s defined as the force needed to speed up a 1-pound mass by 1 foot per second squared.

How many poundals are in 1 tonne-force?

1 tonne-force equals about 70,931.6 poundals.

What’s the formula to convert tonne-force to poundals?

Use this direct conversion:

pdl = tf × 70,931.6

This uses standard gravity and standard unit definitions.

How do you convert poundals to tonne-force?

Use the reverse conversion:

tf = pdl ÷ 70,931.6

Is tonne-force the same as a “ton-force”?

Not always. Tonne-force is based on the metric tonne (1,000 kg).
“Ton-force” can mean force based on a short ton (2,000 lb) or a long ton (2,240 lb), depending on the context. The values will not match.

Why does standard gravity matter in tf to pdl conversions?

Tonne-force is tied to standard gravity (g₀ = 9.80665 m/s²). That fixed value sets:

1 tf = 9,806.65 newtons (N)

Once tf is in newtons, it converts cleanly to poundals.

How do tonne-force and poundals relate to newtons?

They convert through newtons:

1 tf = 9,806.65 N
1 pdl ≈ 0.138255 N

So:

1 tf ≈ 9,806.65 ÷ 0.138255 ≈ 70,931.6 pdl

Can you show a quick example conversion?

Yes. Multiply by 70,931.6:

2 tf ≈ 2 × 70,931.6 = 141,863.2 pdl
0.5 tf ≈ 0.5 × 70,931.6 = 35,465.8 pdl

How should you round tf to pdl results?

Rounding depends on your use. For many loads and force checks, rounding to the nearest whole poundal is fine. For lab work or detailed math, keep more digits (at least 1 decimal place, often more).

Are tonne-force and poundal SI units?

No. The newton (N) is the SI unit of force.
Tonne-force is a gravity-based unit, and the poundal is an older FPS unit. You’ll still see both in some reference tables and older specs.

What symbols are used for tonne-force and poundal?

Common symbols are:

tf for tonne-force (also seen as tonne-force or metric ton-force)
pdl for poundal

Related calculators

Use these next if you want similar conversions or tools.

Poundals to Tonne-force Tonne-force to Newtons Newtons to Poundals Tonne-force to Dynes Dynes to Poundals Tonne-force to Pound of force Pound of force to Poundals Tonne-force to Kip