Force Converter
Use this free online force converter to quickly convert between newton (N), kilonewton (kN), pound-force (lbf), kilogram-force (kgf), and other common force units. Get instant results, see the formulas used, check a conversion table, and learn how to apply these units in engineering, physics, and everyday problems.
Convert between N, kN, lbf, kgf, dyn, and more in one place.
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Enter a value, choose the units, and click Convert to see the converted force here.
Example: 1000 N = 1 kN ≈ 224.81 lbf ≈ 101.97 kgf
Conversion factors are based on standard definitions (1 N = 1 kg·m/s², 1 lbf ≈ 4.44822 N, 1 kgf = 9.80665 N).
This force converter is designed to be fast and simple. Follow these steps to convert between newton, kilonewton, pound-force, kilogram-force, and other units:
You can change units at any time and run multiple conversions. For engineering work, you can copy the numeric result into reports, spreadsheets, or CAD/CAE tools.
The converter supports several commonly used force units in physics, engineering, and everyday applications:
The newton is the SI unit of force. One newton is defined as the force required to accelerate a mass of 1 kilogram at 1 m/s² (1 N = 1 kg·m/s²).
The kilonewton is equal to 1,000 N. It is widely used in structural engineering and mechanics to represent larger forces such as loads on beams, columns, or anchors.
The pound-force is a non-SI unit commonly used in the United States. It represents the force due to gravity on a mass of one pound under standard gravity.
The kilogram-force is the force exerted by a mass of one kilogram under standard gravity. It is sometimes used in older engineering documents and for describing press loads.
The dyne is a small unit of force in the CGS system. 1 N = 105 dyn. It is mainly used in some physics and fluid dynamics contexts.
Ounce-force is another non-SI unit of force related to the pound-force. It is useful for describing smaller forces in imperial-based systems.
The converter uses standard conversion factors between common force units. Below are some core relationships:
In general, the converter first brings any input value back to newtons (N) using the appropriate factor, then converts from newtons to the target unit. This approach keeps the logic consistent and reduces rounding errors when chaining multiple conversions.
The table below shows some common force values in newtons and their approximate equivalents in kilonewtons, pound-force, and kilogram-force. These are useful as quick references when you do not want to run a full calculation.
| Force (N) | Force (kN) | Force (lbf) | Force (kgf) |
|---|---|---|---|
| 10 N | 0.01 kN | 2.2481 lbf | 1.0197 kgf |
| 50 N | 0.05 kN | 11.2404 lbf | 5.0986 kgf |
| 100 N | 0.10 kN | 22.4809 lbf | 10.1972 kgf |
| 250 N | 0.25 kN | 56.2022 lbf | 25.4929 kgf |
| 500 N | 0.50 kN | 112.4045 lbf | 50.9858 kgf |
| 1,000 N | 1.00 kN | 224.8089 lbf | 101.9716 kgf |
Values are rounded to four decimal places where appropriate. For critical calculations, use the converter with higher precision or consult official standards in your field.
Force conversion is useful in many situations where different engineering standards, regions, or industries use different units. Here are some typical examples:
Load calculations for beams, columns, anchors, and foundations often use kilonewtons (kN). When checking component datasheets or fastener ratings in lbf, you can convert between kN and pound-force to ensure safety margins are correct.
Tensile testing machines typically measure force in newtons, while some legacy standards and older equipment still display kilogram-force. Converting between N and kgf helps you compare new measurements with old documentation.
In physics and fluid dynamics, forces might be listed in dynes or newtons depending on the textbook or instrument. Converting between N and dyn makes it easier to compare literature with actual measurements.
Many global projects involve teams from metric and imperial backgrounds. Being able to quickly convert 100 lbf to newtons or vice versa helps avoid confusion and reduces the risk of design errors caused by unit mismatches.
The conversion factors used in this force converter are based on widely accepted definitions. However, in real projects, you should always consider:
For general learning and quick checks, this converter is usually sufficient. For critical engineering, medical, or legal applications, always verify final values with official standards and professional tools before making decisions.
The kilonewton (kN) is simply 1,000 times larger than the newton (N). Large forces such as structural loads are often expressed in kN to keep numbers manageable. For example, 25 kN = 25,000 N.
No. The pound (lb) is a unit of mass, while the pound-force (lbf) is a unit of force. In everyday language they are often mixed, but in engineering calculations, it is important to distinguish between mass and force and keep units consistent.
Kilogram-force (kgf) is mostly used in older documents, some press and clamp ratings, and certain industries with a history of using “kg” as a force unit. For new designs and calculations, it is recommended to use SI units (N, kN) and convert only when necessary.
The converter uses standard conversion factors with sufficient precision for typical engineering and educational purposes. Small rounding differences may appear compared to other tools depending on how many decimal places they use. For highly sensitive work, you can increase the number of decimal places or confirm values with your official calculation tools.
You can use the results as a convenient reference, but you remain responsible for checking that the values, units, and rounding rules match your project requirements. For safety-critical designs or legal documents, always confirm results using your internal standards, software, and review procedures.
Disclaimer: This force converter is provided for general information and educational purposes only. It does not replace professional engineering judgment or official calculation methods. Always verify important results before making decisions.
Free online force converter for quick and accurate conversion between newton (N), kilonewton (kN), pound-force (lbf), kilogram-force (kgf), and more. Includes formulas, examples, and reference tables.
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