Force Conversion
Convert between newtons, pound-force, kilogram-force, dynes and poundals, and turn a force into the mass it holds up or the acceleration it produces — twenty-four tools covering both the modern SI unit and the historical ones it replaced.
Quick force converter
Type in any one of the five boxes and the other four update as you type — no need to pick a direction first.
Values are shown in plain decimal notation. Very large or very small results are written in exponent form so that no digit is lost.
Available Conversions
Select a specific conversion tool to get started
N to lbf
Convert newtons to pound-force for rocket thrust, structural loads and anything specified in both unit systems at once — the conversion behind the Mars Climate Orbiter loss.
N to kgf
Convert newtons to kilogram-force, the unit a bathroom scale or a crane rating is really quoting when it says kilograms.
N to dyn
Convert newtons to dynes, the CGS unit of force, and see why a physics textbook can print both numbers for the same quantity.
N to pdl
Convert newtons to poundals — the imperial unit defined without gravity, and the reason it never caught on in engineering practice.
lbf to N
Convert pound-force to newtons for American drawings, car lifts and torque wrench specs that have to be checked against SI values.
lbf to kgf
Convert pound-force to kilogram-force, two units only two per cent apart, so an error here is easy to make and hard to spot.
lbf to dyn
Convert pound-force to dynes, a span of more than six powers of ten that makes the gap between imperial and CGS concrete.
lbf to pdl
Convert pound-force to poundals and see the 32.174 factor that separates the two, which is exactly the ratio of g to one foot per second squared.
kgf to N
Convert kilogram-force to newtons, and untangle it from the kilogram of mass that market scales and gym plates are labelled with.
kgf to lbf
Convert kilogram-force to pound-force for weight plates, shipping limits and equipment rated in metric and imperial at the same time.
kgf to dyn
Convert kilogram-force to dynes, from a force you can feel in your hand to one measured in a laboratory balance.
kgf to pdl
Convert kilogram-force to poundals and compare two units that each start from a mass, but disagree on what to multiply it by.
dyn to N
Convert dynes to newtons, the standard route out of the centimetre-gram-second system and into SI.
dyn to lbf
Convert dynes to pound-force for surface tension, insect weight and other quantities where the pound-force value is tiny.
dyn to kgf
Convert dynes to kilogram-force for physiological measurements and delicate instrument work quoted in gram-force.
dyn to pdl
Convert dynes to poundals, two units from rival absolute systems that both fell out of engineering use.
pdl to N
Convert poundals to newtons starting from the definition itself: one poundal is one pound accelerated by one foot per second squared.
pdl to lbf
Convert poundals to pound-force and see where 32.174 comes from: the same pound, accelerated by a foot per second squared or by g.
pdl to kgf
Convert poundals to kilogram-force, an absolute unit against a gravitational one, for reading old textbooks against modern specs.
pdl to dyn
Convert poundals to dynes, an imperial absolute unit against a metric absolute one, with neither referencing a standard gravity.
Force to Mass
Turn a force into the mass it can hold up, with Earth, Moon, Mars and Jupiter presets or your own gravity — what 10 N weighs where you are standing.
Mass to Force
Turn a mass into the force it exerts, the calculation behind crane ratings, floor loadings and lifting gear selection.
Force to Acceleration
Find the acceleration a force produces on a given mass, the relationship behind power-to-weight ratios and why a loaded car is slower.
Acceleration to Force
Find the force needed to accelerate a mass, the calculation behind crash loads, seat belts and airbag trigger thresholds.
How to Use This Tool
Select Conversion Type
Choose the specific conversion you need from the list above
Enter Your Values
Input the value you want to convert in the designated field
Get Instant Results
View the converted result immediately with high accuracy