In 1 tonne-force there are 9,806.65 newtons. Meanwhile in 1 newtons there are 0.000102 tonne-force. Keep reading to learn more about each unit of measure and how they are calculated. Or just use the Newtons to Tonne-force calculator above to convert any number.
* Values rounded to 6 decimal places for readability
Tonne-force (tf) is a unit of force based on standard gravity. To convert tonne-force to newtons (N), multiply by the fixed conversion factor:
For quick checks and clean SI units, you can also write the result in scientific notation:
Example:
Tonne-force (tf) is a unit of force based on gravity. It equals the force from a 1-tonne mass under standard gravity. You may also see it written as metric ton-force or ton-force (metric).
1 tonne-force equals 9,806.65 newtons (N) under standard gravity.
Use this formula:
N = tf × 9,806.65
It converts tonne-force (tf) to newtons (N) using standard gravity.
Use this formula:
tf = N ÷ 9,806.65
This converts newtons (N) to tonne-force (tf).
A tonne is 1,000 kilograms. Standard gravity is 9.80665 m/s². Force equals mass times gravity:
F = m × g = 1,000 × 9.80665 = 9,806.65 N
No. A tonne is mass. A tonne-force is force. Tonne-force depends on gravity, so it’s tied to how weight is defined.
It depends on the ton type. Tonne-force uses the metric tonne (1,000 kg). Some people use ton-force to mean a force based on an imperial ton, which is different. If you need precision, confirm whether it’s metric or imperial.
The standard conversion uses standard gravity (9.80665 m/s²). If local gravity differs, the force from the same mass changes a bit. For most engineering and general use, standard gravity is the accepted basis.
If a load is 2.5 tf, then:
N = 2.5 × 9,806.65 = 24,516.625 N
Rounded, that’s 24,516.63 N.
Tonne-force often shows up where loads are discussed in metric tonnes, like lifting, rigging, and heavy equipment ratings. Newtons are more common in SI-based engineering and physics work.
Common symbols include tf and sometimes t f. In some contexts, you may see tonf for ton-force, but it can be unclear without stating metric or imperial.
Use 9,806.65 N per tf and keep track of units. Don’t mix up tonne-force (force) with tonne (mass). If the source says “tons,” confirm whether it means metric tonnes or another ton type.
The Calculate Box tool to convert tonne-force to newtons 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 newtons.