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Mode: kN → tf
kN
=
0.0000tf
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About

The metric ton-force (tf), sometimes written as "tonne-force", is a gravitational unit of force often used in the specifications of hydraulic presses, jacks, and compression testing machines. While Kilonewtons (kN) is the standard SI unit, many industrial gauges and legacy systems are calibrated in tf. This tool provides an instant, high-precision conversion between these two standards.

Unlike mass conversion, this is a force-to-force conversion. It is defined as the force exerted by one metric tonne of mass in standard gravity. For engineers working with hydraulic cylinder ratings, calculating the exact tf is crucial for ensuring machinery is not overloaded beyond its rated capacity.

hydraulic force ton-force tf conversion kN press capacity engineering

Formulas

The conversion logic uses the standard gravity constant to 5 decimal places.

Ftf = FkN9.80665

Conversely:

FkN = Ftf × 9.80665

Reference Data

Force (kN)Force (tf)
10.10197
101.01972
505.09858
10010.19716
50050.98581
1000101.97162
2500254.92905

Frequently Asked Questions

"t" (Tonne) is a unit of mass. "tf" (Ton-force) is a unit of force. While they are numerically similar on Earth, "tf" specifically describes the force or weight, making it the correct unit for pressure and load ratings in hydraulics.
No. A Long Ton Force is based on the Imperial UK ton (1016 kg). This tool converts to Metric Ton-force (1000 kg basis).