Tonnes-force to Kilonewtons
Type a value in Tonnes-force and get the result in Kilonewtons, calculated exactly.
100 Tonnes-force = 980.665 Kilonewtons
Precision
Exact factorThis result is exact.
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Formula
kN = tf × 9.80665
To convert Tonnes-force to Kilonewtons, multiply the value by 9.80665.
Worked examples
- 1 tf × 9.80665 = 9.80665 kN
- 100 tf × 9.80665 = 980.665 kN
- 50 tf × 9.80665 = 490.3325 kN
This factor is exact by definition.
Conversion table
| Tonnes-force (tf) | Kilonewtons (kN) |
|---|---|
| 1 | 9.80665 |
| 2 | 19.6133 |
| 3 | 29.41995 |
| 4 | 39.2266 |
| 5 | 49.03325 |
| 6 | 58.8399 |
| 7 | 68.64655 |
| 8 | 78.4532 |
| 9 | 88.25985 |
| 10 | 98.0665 |
| 15 | 147.09975 |
| 20 | 196.133 |
| 25 | 245.16625 |
| 30 | 294.1995 |
| 40 | 392.266 |
| 50 | 490.3325 |
| 60 | 588.399 |
| 70 | 686.4655 |
| 75 | 735.49875 |
| 80 | 784.532 |
| 90 | 882.5985 |
| 100 | 980.665 |
Values marked ≈ are rounded; the rest are exact.
Reverse table: Kilonewtons to Tonnes-force
| Kilonewtons (kN) | Tonnes-force (tf) |
|---|---|
| 1 | ≈ 0.1019716 |
| 2 | ≈ 0.2039432 |
| 3 | ≈ 0.3059149 |
| 4 | ≈ 0.4078865 |
| 5 | ≈ 0.5098581 |
| 6 | ≈ 0.6118297 |
| 7 | ≈ 0.7138013 |
| 8 | ≈ 0.815773 |
| 9 | ≈ 0.9177446 |
| 10 | ≈ 1.019716 |
| 15 | ≈ 1.529574 |
| 20 | ≈ 2.039432 |
| 25 | ≈ 2.549291 |
| 30 | ≈ 3.059149 |
| 40 | ≈ 4.078865 |
| 50 | ≈ 5.098581 |
| 60 | ≈ 6.118297 |
| 70 | ≈ 7.138013 |
| 75 | ≈ 7.647872 |
| 80 | ≈ 8.15773 |
| 90 | ≈ 9.177446 |
| 100 | ≈ 10.19716 |
Unit definitions
- Tonnes-force tf
- Exactly 1000 kilograms-force, or 9806.65 newtons.
- Kilonewtons kN
- Exactly 1000 newtons.
Questions people ask
Tonnes-force to Kilonewtons: what is the conversion factor?
One tf is 9.80665 kN.
How do I convert Tonnes-force to Kilonewtons?
Use the formula above. For example, 100 tf = 980.665 kN.
Is the conversion exact?
Yes. Both units have exact definitions, so the factor is exact; a result is only rounded when its decimals never end.
Factors checked 19 October 2026.