kVA to Amps Chart
Every rating from 0.5 to 3,000 kVA converted at the five voltages that cover most real work. For a value the table skips — an unusual rating or a 415V supply — the calculator on the homepage gives the same math instantly.
Balanced three-phase load, line-to-line voltage. Change any value and the result updates instantly.
The full kVA to amps chart
Amps are rounded to two decimal places, the same rounding the calculators use. For breaker and cable decisions, apply your code's rules on top of these figures — the chart gives the load, not the protection.
| kVA | 120V · single-phase | 240V · single-phase | 208V · three-phase | 400V · three-phase | 480V · three-phase |
|---|---|---|---|---|---|
| 0.5 | 4.17 | 2.08 | 1.39 | 0.72 | 0.60 |
| 1 | 8.33 | 4.17 | 2.78 | 1.44 | 1.20 |
| 1.5 | 12.50 | 6.25 | 4.16 | 2.17 | 1.80 |
| 2 | 16.67 | 8.33 | 5.55 | 2.89 | 2.41 |
| 3 | 25.00 | 12.50 | 8.33 | 4.33 | 3.61 |
| 5 | 41.67 | 20.83 | 13.88 | 7.22 | 6.01 |
| 6 | 50.00 | 25.00 | 16.65 | 8.66 | 7.22 |
| 7.5 | 62.50 | 31.25 | 20.82 | 10.83 | 9.02 |
| 9 | 75.00 | 37.50 | 24.98 | 12.99 | 10.83 |
| 10 | 83.33 | 41.67 | 27.76 | 14.43 | 12.03 |
| 15 | 125.00 | 62.50 | 41.64 | 21.65 | 18.04 |
| 20 | 166.67 | 83.33 | 55.51 | 28.87 | 24.06 |
| 25 | 208.33 | 104.17 | 69.39 | 36.08 | 30.07 |
| 30 | 250.00 | 125.00 | 83.27 | 43.30 | 36.08 |
| 40 | 333.33 | 166.67 | 111.03 | 57.74 | 48.11 |
| 45 | 375.00 | 187.50 | 124.91 | 64.95 | 54.13 |
| 50 | 416.67 | 208.33 | 138.79 | 72.17 | 60.14 |
| 60 | 500.00 | 250.00 | 166.54 | 86.60 | 72.17 |
| 62.5 | 520.83 | 260.42 | 173.48 | 90.21 | 75.18 |
| 75 | 625.00 | 312.50 | 208.18 | 108.25 | 90.21 |
| 100 | 833.33 | 416.67 | 277.57 | 144.34 | 120.28 |
| 112.5 | 937.50 | 468.75 | 312.27 | 162.38 | 135.32 |
| 125 | 1,041.67 | 520.83 | 346.97 | 180.42 | 150.35 |
| 150 | 1,250.00 | 625.00 | 416.36 | 216.51 | 180.42 |
| 167 | 1,391.67 | 695.83 | 463.55 | 241.04 | 200.87 |
| 200 | 1,666.67 | 833.33 | 555.14 | 288.68 | 240.56 |
| 225 | 1,875.00 | 937.50 | 624.54 | 324.76 | 270.63 |
| 250 | 2,083.33 | 1,041.67 | 693.93 | 360.84 | 300.70 |
| 300 | 2,500.00 | 1,250.00 | 832.72 | 433.01 | 360.84 |
| 400 | 3,333.33 | 1,666.67 | 1,110.29 | 577.35 | 481.13 |
| 500 | 4,166.67 | 2,083.33 | 1,387.86 | 721.69 | 601.41 |
| 550 | 4,583.33 | 2,291.67 | 1,526.65 | 793.86 | 661.55 |
| 630 | 5,250.00 | 2,625.00 | 1,748.71 | 909.33 | 757.77 |
| 750 | 6,250.00 | 3,125.00 | 2,081.79 | 1,082.53 | 902.11 |
| 800 | 6,666.67 | 3,333.33 | 2,220.58 | 1,154.70 | 962.25 |
| 1,000 | 8,333.33 | 4,166.67 | 2,775.72 | 1,443.38 | 1,202.81 |
| 1,250 | 10,416.67 | 5,208.33 | 3,469.65 | 1,804.22 | 1,503.52 |
| 1,500 | 12,500.00 | 6,250.00 | 4,163.58 | 2,165.06 | 1,804.22 |
| 2,000 | 16,666.67 | 8,333.33 | 5,551.44 | 2,886.75 | 2,405.63 |
| 2,500 | 20,833.33 | 10,416.67 | 6,939.31 | 3,608.44 | 3,007.03 |
| 3,000 | 25,000.00 | 12,500.00 | 8,327.17 | 4,330.13 | 3,608.44 |
Written-out answers for the most-searched values
The nine ratings people look up most, spelled out at every chart voltage — handy if you arrived from a search for one specific conversion.
1 kVA in amps
- 120V single-phase — 8.33 A
- 240V single-phase — 4.17 A
- 208V three-phase — 2.78 A
- 400V three-phase — 1.44 A
- 480V three-phase — 1.20 A
5 kVA in amps
- 120V single-phase — 41.67 A
- 240V single-phase — 20.83 A
- 208V three-phase — 13.88 A
- 400V three-phase — 7.22 A
- 480V three-phase — 6.01 A
10 kVA in amps
- 120V single-phase — 83.33 A
- 240V single-phase — 41.67 A
- 208V three-phase — 27.76 A
- 400V three-phase — 14.43 A
- 480V three-phase — 12.03 A
15 kVA in amps
- 120V single-phase — 125.00 A
- 240V single-phase — 62.50 A
- 208V three-phase — 41.64 A
- 400V three-phase — 21.65 A
- 480V three-phase — 18.04 A
25 kVA in amps
- 120V single-phase — 208.33 A
- 240V single-phase — 104.17 A
- 208V three-phase — 69.39 A
- 400V three-phase — 36.08 A
- 480V three-phase — 30.07 A
50 kVA in amps
- 120V single-phase — 416.67 A
- 240V single-phase — 208.33 A
- 208V three-phase — 138.79 A
- 400V three-phase — 72.17 A
- 480V three-phase — 60.14 A
100 kVA in amps
- 120V single-phase — 833.33 A
- 240V single-phase — 416.67 A
- 208V three-phase — 277.57 A
- 400V three-phase — 144.34 A
- 480V three-phase — 120.28 A
500 kVA in amps
- 120V single-phase — 4,166.67 A
- 240V single-phase — 2,083.33 A
- 208V three-phase — 1,387.86 A
- 400V three-phase — 721.69 A
- 480V three-phase — 601.41 A
1,000 kVA in amps
- 120V single-phase — 8,333.33 A
- 240V single-phase — 4,166.67 A
- 208V three-phase — 2,775.72 A
- 400V three-phase — 1,443.38 A
- 480V three-phase — 1,202.81 A
How the chart is built
Nothing in the table is typed by hand. Every cell is computed from the same two identities the calculators use — amps = kVA × 1000 ÷ volts single-phase, and amps = kVA × 1000 ÷ (√3 × volts) three-phase — so the chart and the tools can never disagree. The ratings list combines standard generator and transformer sizes (including 62.5, 112.5 and 167 kVA) with the in-between values people actually search for, up to 3,000 kVA. The methodology page documents the rounding rules.
A note on the 120V column
Large ratings at 120 V produce currents no real 120 V service would carry — 3,000 kVA at 120 V is 25,000.00 A on paper. The column is complete for consistency and for the small ratings where 120 V is real (UPS units, control power, small appliances), not a suggestion that such services exist at the top of the table.
Frequently asked questions
How do I read this kVA to amps chart?
Find your kVA in the first column, then read across to the column that matches your voltage and phase. A 50 kVA row, for example, gives 208.33 A at 240 V single-phase and 72.17 A at 400 V three-phase. If your exact rating or voltage is not listed, the calculator at the top of this page (or the homepage converter) computes it directly.
Why does the same kVA give different amps in every column?
Because current is power divided by voltage: the same apparent power at a lower voltage needs proportionally more current. That is why the 120 V column is exactly double the 240 V column, and why three-phase columns are lower than single-phase ones would be at the same voltage — the √3 in the three-phase formula shares the power across three conductors.
Is this chart valid for both generators and transformers?
Yes. Full-load amps depend only on the kVA rating and the voltage, not on the machine producing or passing the power. Generator and transformer plates both state kVA for exactly this reason. What differs between machines is the duty and protection around that current, which the dedicated generator and transformer pages cover.
What if my voltage is not in the chart — 415V, 380V or 600V?
The chart covers the five most common voltages. For anything else, use the calculator: the conversion is a division, not a lookup, so 415 V (common in India and Pakistan), 380 V and 600 V all work in the tool. Example: 100 kVA at 415 V three-phase is 139.12 A.
Can I print this chart for the workshop wall?
Yes — that is what the Print this chart button above the table is for. The print version hides the site navigation and the calculator and lays the full table out in clean black and white, so it stays readable pinned next to a panel or inside a site office.
Sources and references
The chart is generated from the standards-based identities below; voltages follow the IEC and North American standards listed here.
- NFPA 70 — National Electrical Code (NEC) — the code electricians size conductors and protection against
- IEEE Std 141 — Recommended Practice for Electric Power Distribution (Red Book) — apparent power and load-current practice for industrial and commercial systems
- IEC 60038 — Standard Voltages — the standard voltage levels (120, 208, 240, 400, 480 V) used across this site
- NIST — SI unit of electric current (the ampere) — the definition of the ampere behind every result