Kiloampere to Ampere Converter

Enter the value that you want to convert kiloampere (kA) to ampere (A) or ampere to kiloampere.Also written as KA to A conversion.

1 kiloampere = 1000.0000000 ampere

Formula: ampere = kiloampere value × 1000.0000000

KA to A — kiloampere to ampere

Value

Result

10000.00000A

10 kiloampere = 10000.00000 ampere

Popular Current Converters:

amps to milliamps milliamps to amps amps to microamps microamps to amps amps to kiloamps kiloamps to amps

Converting Kiloampere to Ampere

Understanding the Kiloampere

Kiloampere (kA) is a unit of current measurement. 1 kiloampere is equal to 1000.0000000 ampere.

The Ampere in Electrical Systems

Ampere (A) is a unit of current measurement. 1 ampere is equal to 0.0010000 kiloampere.

Electric Current Measurement

Electric current conversions matter in electrical engineering, electronics repair, and power system design. Circuit designers work in milliamps and microamps for semiconductor work, while power engineers deal in kiloamps for substations and industrial bus bars. Legacy CGS units like abampere and statampere still appear in older physics textbooks and reference materials.

kiloampere to ampere metric conversion table

0.01 kA	=	10.00000 A
0.1 kA	=	100.00000 A
1 kA	=	1000.00000 A
2 kA	=	2000.00000 A
3 kA	=	3000.00000 A
4 kA	=	4000.00000 A
5 kA	=	5000.00000 A
6 kA	=	6000.00000 A
7 kA	=	7000.00000 A
8 kA	=	8000.00000 A
9 kA	=	9000.00000 A
10 kA	=	10000.00000 A
11 kA	=	11000.00000 A
12 kA	=	12000.00000 A
13 kA	=	13000.00000 A
14 kA	=	14000.00000 A
15 kA	=	15000.00000 A
16 kA	=	16000.00000 A
17 kA	=	17000.00000 A
18 kA	=	18000.00000 A

19 kA	=	19000.00000 A
20 kA	=	20000.00000 A
30 kA	=	30000.00000 A
40 kA	=	40000.00000 A
50 kA	=	50000.00000 A
60 kA	=	60000.00000 A
70 kA	=	70000.00000 A
80 kA	=	80000.00000 A
90 kA	=	90000.00000 A
100 kA	=	100000.00000 A
200 kA	=	200000.00000 A
300 kA	=	300000.00000 A
400 kA	=	400000.00000 A
500 kA	=	500000.00000 A
600 kA	=	600000.00000 A
700 kA	=	700000.00000 A
800 kA	=	800000.00000 A
900 kA	=	900000.00000 A
1000 kA	=	1000000.00000 A

How to Convert KA to A (Kiloampere to Ampere)?

We can convert kiloampere to ampere by using an example.

Example:

Convert 20 Kiloampere to Ampere?

We know 1 Kiloampere = 1000.0000000 ampere; 1 Ampere = 0.0010000 kiloampere.

20 kiloampere = ___A

20 × 1000.0000000 = 20000.00000 A (we know 1 kiloampere = 1000.0000000 ampere)

Answer:

20 kiloampere = 20000.00000 ampere

How to Convert Kiloamps to Amps (kA to A)

Converting kiloamps to amps is necessary when sizing conductors, calculating I²R losses, or programming protective relay settings. Since 1 kA = 1,000 A, multiply the kiloamp value by 1,000.

Start with the current value in kiloamps (kA).
Multiply by 1,000 (since 1 kA = 1,000 A).
The result is the current in amps (A).
Example: 2.5 kA × 1,000 = 2,500 A.

💡 Tip: Protective relays are often set in amps but coordination studies report fault levels in kA. Always multiply kA × 1,000 before entering relay pickup settings — a misplaced decimal in protection can cause equipment explosions.

Kiloamps to Amps: Fault and Load Currents

Common kiloamp values converted to amps for protective device coordination:

Kiloampere	Ampere	Note
0.1 kA	100 A	Large residential service
0.5 kA	500 A	Small industrial feeder
1 kA	1,000 A	Main bus bar rated current
5 kA	5,000 A	Generator output current
10 kA	10,000 A	Residential fault level
25 kA	25,000 A	Commercial fault level
50 kA	50,000 A	HV substation fault
100 kA	100,000 A	High-power arc furnace

Solved Examples: Kiloamps to Amps

Question 1: A short-circuit study reports 18.5 kA at a switchboard. Express in amps for relay settings.

Solution:

A = kA × 1,000

= 18.5 × 1,000

= 18,500 A

Answer: 18.5 kA = 18,500 A — relay instantaneous pickup should be set below this level.

Question 2: An arc flash study shows 35 kA bolted fault. Convert to amps for incident energy calculations.

Solution:

A = kA × 1,000

= 35 × 1,000

= 35,000 A

Answer: 35 kA = 35,000 A — at 480 V, this fault delivers enormous incident energy requiring Category 4 PPE.

Question 3: A welding transformer secondary is rated 0.8 kA. What is the maximum welding current in amps?

Solution:

A = kA × 1,000

= 0.8 × 1,000

= 800 A

Answer: 0.8 kA = 800 A — suitable for heavy structural welding and thick plate joining.

Practice: Kiloamps to Amps

Try solving these on your own to test your understanding:

Convert 3.5 kA to amps. (Answer: 3,500 A)
A bus duct is rated 1.6 kA. Express in amps. (Answer: 1,600 A)
Convert 0.25 kA to amps. (Answer: 250 A)
A fault study shows 65 kA available. What is that in amps? (Answer: 65,000 A)
Convert 12 kA to amps. (Answer: 12,000 A)

Arc Flash Hazard and Kiloamp Fault Currents

Arc flash energy depends on fault current magnitude (kA), clearing time (cycles), and working distance. At 35 kA (35,000 A) and 480 V with a 6-cycle clearing time, incident energy can exceed 40 cal/cm² — lethal levels. IEEE 1584 calculations require fault current in kA as input. Reducing clearing time from 30 cycles to 6 cycles can drop incident energy by 80%, which is why fast relay settings (entered in amps) are critical for worker safety.

Conductor Sizing for Kiloamp Bus Bars

Bus bars in switchgear carry hundreds to thousands of amps continuously. A 2 kA (2,000 A) copper bus bar might be 100 mm × 10 mm cross-section to limit temperature rise to 65°C above ambient. The I²R heating loss at 2,000 A through a 1-meter bar with 17 µΩ resistance is 2,000² × 0.000017 = 68 W per meter. Engineers convert kA load currents to amps for these thermal calculations.

Key Takeaways

Multiply kiloamps by 1,000 to get amps.
1 kA = 1,000 A — used in fault studies and industrial power.
Always convert kA to A before entering protective relay settings.
Arc flash energy calculations require fault current in kA as input.
Bus bar sizing uses continuous current in amps for I²R thermal analysis.

Kiloampere to Ampere Conversion Formula

ampere = kiloampere × 1000.0000000

1 kiloampere = 1000.0000000 ampere

1 ampere = 0.0010000 kiloampere

Reverse: kiloampere = ampere × 0.0010000

Frequently Asked Questions

How many ampere are in 1 kiloampere?

There are 1000.0000000 ampere in 1 kiloampere. To convert kiloampere to ampere, multiply the value by 1000.0000000.

How do I convert kiloampere to ampere?

Multiply your kiloampere value by 1000.0000000 to get the equivalent in ampere. For example, 5 kiloampere = 5 × 1000.0000000 = 5000.00000 ampere.

How do I convert ampere to kiloampere?

Multiply your ampere value by 0.0010000 to get the equivalent in kiloampere. Alternatively, divide by 1000.0000000.

What is 10 kiloampere in ampere?

10 kiloampere is equal to 10000.00000 ampere.

What is 100 kiloampere in ampere?

100 kiloampere is equal to 100000.00000 ampere.