In 1 newtons there are 0.000102 tonne-force. Meanwhile in 1 tonne-force there are 9,806.65 newtons. Keep reading to learn more about each unit of measure and how they are calculated. Or just use the Tonne-force to Newtons calculator above to convert any number.
* Values rounded to 6 decimal places for readability
To convert newtons (N) to tonne-force (tf), use this simple rule:
This works because newton measures force in SI units, while tonne-force is the force from the weight of a 1,000 kg mass under standard gravity.
Example:
Tonne-force (tf) is a unit of force based on the weight of a 1-tonne mass under standard gravity. A newton (N) is the SI unit of force. Both measure force, but they use different reference systems. Tonne-force is common in heavy load and lifting work.
To convert newtons to tonne-force, divide by 9,806.65.
9,806.65 is the number of newtons in one tonne-force under standard gravity. It comes from the standard value of gravity: g = 9.80665 m/s². Since 1 tonne equals 1,000 kg, the force is 1,000 × 9.80665 = 9,806.65 N.
Yes. Tonne-force, metric ton-force, and tonne-force (tf) refer to the same unit. They all use a 1,000 kg mass under standard gravity.
No. Tonne-force is based on a metric tonne (1,000 kg). Short ton-force is based on a US short ton (2,000 lb). They are close in size but not the same, so don’t swap them in load ratings.
Multiply tonne-force by 9,806.65.
This works for any value of tf.
This conversion is for force, not mass. Weight is a force, so it can be in newtons or tonne-force. Mass is in kilograms or tonnes. If you only have mass, you must apply gravity to get force.
Yes. Tonne-force is tied to standard gravity. If you use local gravity (which can vary by place and height), the force from a given mass changes a bit. For most uses, standard gravity is the accepted reference.
Here are quick reference points:
These are rounded values. Exact results depend on the full conversion factor.
Tonne-force shows up when forces are very large and people want a number that matches heavy loads. You may see it in lifting, hoists, winches, load tests, anchors, and large press forces.
Use digits that match your input and your task. For rough field work, 3 to 4 significant digits often works. For specs, testing, or reports, keep more digits and round at the end.
The Calculate Box tool to convert newtons to tonne-force uses the open source script Convert.js to convert units of measurement. To use this tool, simply type a newtons value in the box and have it instantly converted to tonne-force.