Ampere per millimeter (A/mm)
Exactly 1000 A/m.
What is an ampere per millimeter?
- Symbol
- A/mm
- Quantity
- Linear Current Density
- Unit system
- SI
- Definition
- Exactly 1000 A/m.
- Exact
- Yes, the value is exact by definition
- Source
- SI Brochure, 9th edition (BIPM, 2019)
Common applications
Used in electrical machine design for the electric loading of motors and generators.
Ampere per millimeter in other linear current density units
- 1 A/mm = 10 A/cmAmpere per centimeter
- 1 A/mm = 25.4 A/inAmpere per inch
- 1 A/mm = 304.8 A/ftAmpere per foot
- 1 A/mm = 1 abA/cmAbampere per centimeter
- 1 A/mm = 1000 A/mAmpere per meter
- 1 A/mm = 1 kA/mKiloampere per meter
Ampere per millimeter quick reference
| Ampere per millimeter | Ampere per centimeter | Ampere per meter | Ampere per inch |
|---|---|---|---|
| 1 A/mm | = 10 A/cm | = 1000 A/m | = 25.4 A/in |
| 10 A/mm | = 100 A/cm | = 10000 A/m | = 254 A/in |
| 100 A/mm | = 1000 A/cm | = 100000 A/m | = 2540 A/in |
| 1000 A/mm | = 10000 A/cm | = 1000000 A/m | = 25400 A/in |
Where the ampere per millimeter fits
The next smaller linear current density unit is the ampere per centimeter (A/cm). 1 A/mm = 10 A/cm, and 1 A/cm = 0.1 A/mm.
Frequently asked questions
- How many amperes per centimeter are in one ampere per millimeter?
- One ampere per millimeter = 10 A/cm (amperes per centimeter).
- How many amperes per meter are in one ampere per millimeter?
- One ampere per millimeter = 1000 A/m (amperes per meter).
- How many amperes per inch are in one ampere per millimeter?
- One ampere per millimeter = 25.4 A/in (amperes per inch).