How to convert tonne-forces to kilonewtons
kN = tf × 9.80665
Example: 5 tf × 9.80665 = 49.03325 kN
Tonne-forces to Kilonewtons table
| Tonne-forces (tf) | Kilonewtons (kN) |
|---|---|
| 0.5 tf | 4.903325 kN |
| 1 tf | 9.80665 kN |
| 2 tf | 19.6133 kN |
| 3 tf | 29.41995 kN |
| 4 tf | 39.2266 kN |
| 5 tf | 49.03325 kN |
| 6 tf | 58.8399 kN |
| 7 tf | 68.64655 kN |
| 8 tf | 78.4532 kN |
| 9 tf | 88.25985 kN |
| 10 tf | 98.0665 kN |
| 15 tf | 147.09975 kN |
| 20 tf | 196.133 kN |
| 25 tf | 245.16625 kN |
| 30 tf | 294.1995 kN |
| 40 tf | 392.266 kN |
| 50 tf | 490.3325 kN |
| 75 tf | 735.49875 kN |
| 100 tf | 980.665 kN |
| 250 tf | 2,451.6625 kN |
| 500 tf | 4,903.325 kN |
| 1,000 tf | 9,806.65 kN |
About these units
Tonne-forces (tf): A tonne-force is the weight of a metric tonne, 9,806.65 newtons, used for press and crane capacities.
Kilonewtons (kN): A kilonewton is 1,000 newtons, used for loads on structures, anchors and lifting gear.
Frequently asked questions
How many kilonewtons are in 1 tonne-force?
1 tonne-force (tf) equals 9.80665 kilonewtons (kN).
How do I convert tf to kN?
Multiply the value in tonne-forces by 9.80665. For example, 5 tf × 9.80665 = 49.03325 kN.
How do I convert kilonewtons back to tonne-forces?
Multiply by 0.1019716213 (or divide by 9.80665). 1 kN = 0.1019716213 tf.
What is a tonne-force?
A tonne-force is the weight of a metric tonne, 9,806.65 newtons, used for press and crane capacities.
Conversion factors come from exact international definitions (NIST SP 811, BIPM) where they exist. Results show up to 10 significant digits. Need every force unit at once? Use the Force Converter.