Force Converter

A force converter translates straight-line push or pull from one unit to another. This free tool handles newtons (N), kilonewtons (kN), pound-force (lbf), kilogram-force (kgf), metric ton-force (tf), and dynes — for structural engineering, physics problems, and load specifications.

Enter a value, pick From and To units, and read the result instantly. All conversion uses standard NIST factors in your browser — nothing is uploaded. For rotational tightening (N·m, ft·lb), use the separate Torque Converter instead.

US engineering and aviation specs often quote pound-force (lbf). SI uses newtons. The exact conversion:

N = lbf × 4.44822  ·  lbf = N × 0.224809

Examples: 1 lbf to newton = 4.448 N · 10 lbf ≈ 44.5 N · 100 lbf ≈ 444.8 N · 1,000 lbf ≈ 4,448 N (≈ 4.45 kN). Tire load ratings, cable tension, and hoist limits in US documents often appear in lbf — convert here to compare with metric beam calculations in kN.

Pound force to newton and lbf to newton calculator searches mean the same multiply-by-4.448 step.

Reverse direction: newton to lbf, convert n to lbf, or N to pound-force. Multiply newtons by 0.224809 to get lbf.

Anchors: 1 N ≈ 0.225 lbf · 10 N ≈ 2.25 lbf · 100 N ≈ 22.5 lbf · 1 kN (1,000 N) ≈ 224.8 lbf. Lab spring scales calibrated in N can be compared to US equipment rated in lbf using this factor.

Kilogram-force (kgf) — also written kilopond (kp) — is the force exerted by one kilogram mass under standard gravity: 1 kgf = 9.80665 N. Common lookups: kgf to newton, kilogram force to newton, 100 kgf ≈ 981 N.

Kilonewtons (kN) appear on structural drawings and crane charts. Kn to lbf: 1 kN ≈ 224.8 lbf. Convert kilonewton to ton / kN to ton conversion / ton to kn converter: in metric engineering, one metric ton-force (tf) ≈ 9.807 kN ≈ 1,000 kgf. So 10 kN ≈ 1.02 tf and 1 tf ≈ 9.81 kN. Select "Metric ton-force" in the dropdown for these conversions.

1 kN = 1,000 N · 1 tf ≈ 9.807 kN · 1 kgf = 9.807 N

Searches like lbf to kg, 1 lbf berapa kg, or n to kg converter often mix force with mass. On Earth's surface, an object weighing 1 lbf has mass ≈ 0.454 kg — but that depends on gravity; force and mass are not the same quantity.

1 lbf as force = 4.448 N. As a rough mass equivalent at sea level: 1 lbf weight ↔ 0.454 kg mass. For physics problems, convert lbf → N here; use mass in kg separately in F = ma.

lbf vs lb (lbm): lbm is pound mass; lbf is pound force. On Earth, 1 lbm weighs about 1 lbf — but only approximately. Engineering calcs should keep units explicit.

The dyne is a CGS unit: 1 dyne = 10⁻⁵ N. Surface tension, micro-scale contact, and older physics texts use dynes. 1 N = 100,000 dyn. Enter dynes in the From unit and convert to N or mN for SI work.

At the other end of the scale, Meganewtons (MN) and kN describe bridge loads, press forces, and geotechnical bearing capacity. 1 MN = 1,000 kN = 1,000,000 N.

Force (this page): N, lbf, kgf, kN — straight push/pull. Torque (N·m, ft·lb): force applied at a distance on a wrench or shaft. Torque = force × radius only when force is perpendicular to the lever arm.

If you need nm to ft lbs or ft lb to nm, that is unit conversion between torque labels — use the Torque Converter, not this force tool. Converting lbf to N·m without a lever length is dimensionally incomplete.

Pressure (Pa, psi, bar) is force per area — see the Pressure Converter. This force tool converts absolute force magnitudes only.