Newton meter is the SI torque unit.
Newton meters to Attonewton meters Converter — N m to aN m
Convert Newton meter (N m) to Attonewton meter (aN m) using the exact conversion factor (1 newton meter = 1e+18 attonewton meter). See the formula, worked examples, conversion table, history, and common uses.
Newton meters to Attonewton meters converter
Converter
Torque Converter
Convert newton meters, pound-feet, pound-inches, ounce-inches, and kilogram-force meters.
Context values
Some unit families need one extra value for a physically accurate result.
Attonewton meter is 1e-18 newton meter units.
Result = input x 1 / 1e-18.
Torque uses the newton meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Newton meters to Attonewton meters
Newton meter and Attonewton meter both measure torque, and the conversion is essential for anyone using a torque wrench specified in one unit against a bolt or engine spec given in the other. Newton meter is most often used for torque wrench specifications (bolt tightening) outside the us.
Formula
attonewton meters = newton meters × 1e+18
This factor comes from each unit's defined relationship to the category's base unit: 1 newton meter equals 1 base unit, and 1 attonewton meter equals 1e-18 base units, so dividing one by the other gives the direct newton meter-to-attonewton meter factor of 1e+18.
Simple example
1 N m × 1e+18 = 1e+18 aN m
1 newton meter = 1e+18 attonewton meters.
Real-world example
10 N m × 1e+18 = 1e+19 aN m
10 newton meters = 1e+19 attonewton meters.
Conversion table
| Newton meter (N m) | Attonewton meter (aN m) |
|---|---|
| 1 N m | 1e+18 aN m |
| 5 N m | 5e+18 aN m |
| 10 N m | 1e+19 aN m |
| 50 N m | 5e+19 aN m |
| 100 N m | 1e+20 aN m |
| 500 N m | 5e+20 aN m |
Reverse conversion: Attonewton meter to Newton meter
1e+18 aN m × 1e-18 = 1 N m
1e+18 attonewton meters = 1 newton meter.
newton meters = attonewton meters × 1e-18
For a page dedicated to this direction, see Attonewton meter to Newton meter.
Understanding the Newton meter
Newton meter (N m) measures torque. The newton-meter is the SI derived unit of torque: one newton of force applied at one meter of leverage. It is classified as a SI derived unit.
Where it's used: Standard scientific and automotive torque unit worldwide except the US
Uses of the Newton meter today
- Torque wrench specifications (bolt tightening) outside the US
- Engine torque specifications internationally
- Mechanical and structural engineering
History of the Newton meter
As a coherent SI derived unit, the newton-meter follows automatically from the newton and meter, without an independent historical origin — though it is numerically identical in form to the joule (energy), the two are conventionally kept distinct because torque and energy are physically different quantities.
Historical origin. Newton meter was not the invention of a single named person; it developed through the process described above.
Understanding the Attonewton meter (aN m)
Attonewton meter is 1e-18 newton meter units.
Newton meter — sources
- BIPM SI Brochure — Coherent derived units — Defines the newton-meter as the SI unit of torque.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many attonewton meters are in 1 newton meter?
1 newton meter equals 1e+18 attonewton meters, using the exact defined conversion factor rather than an estimate.
How do I convert newton meter to attonewton meter?
Multiply the newton meter value by 1e+18. The converter above does this instantly to whatever precision you set.
How do I convert attonewton meter back to newton meter?
Use the reverse factor: 1 attonewton meter equals 1e-18 newton meters. You can also use the swap control in the converter above to flip the direction instantly.
What is a newton meter?
Newton meter (N m) measures torque. The newton-meter is the SI derived unit of torque: one newton of force applied at one meter of leverage. It is classified as a SI derived unit.
What is a attonewton meter?
Attonewton meter (aN m) is a unit of torque.
Is the newton meter to attonewton meter conversion exact?
Yes. Both newton meter and attonewton meter are defined by fixed standards rather than physical artifacts, so the factor of 1e+18 used above is exact to as many digits as you choose to display.
Where is the newton meter still used today?
Standard scientific and automotive torque unit worldwide except the US