Converter · Exact factors
Electrical unit converter
Pick what you are converting from and to, type the number, and read the answer. It covers the units that come up on a job: milliamps and amps, milliamp hours and amp hours, metres and feet, millimetres and inches.
Result
Enter a value to see the answer.
Working
1 A = 1000 mA · 1 Ah = 1000 mAh · 1 ft = 0.3048 m · 1 in = 25.4 mm
Every factor is exact by definition, so the answer is exact to the digits shown.
Battery sizes are quoted in Ah and panel currents often in mA. To size a battery, use the fire alarm battery calculator, which takes the currents in either unit.
For guidance only. Always check against the current edition of the standard and the manufacturer's data.
Built by the engineer behind Kerova, certificate software for fire and security firms.