Amps to kWh Cost Calculator
Calculate your electricity cost quickly with our amps to kWh cost calculator. Convert amps into energy usage and estimate your bill in seconds across DC, Single-phase, and Three-phase systems.
Cost Estimation Tool
How to Use Amps to kWh Cost Calculator
Follow these simple steps to use the amps to kWh cost calculator:
Step-by-Step Instructions
- Select System Type: Choose between DC, Single-phase AC, or Three-phase AC.
- Enter the current (Amps): Input the device current in amps (A).
- Enter the voltage (Volts): Use standard values like 12V (DC), 120V/220V (Single-phase), or 400V (Three-phase).
- Set Power Factor (for AC): Typical values are 0.85 to 1.0.
- Add usage time (Hours): Enter how many hours the device runs daily.
- Enter electricity rate (Cost per kWh): Input your local electricity tariff.
- Click calculate: The calculator instantly shows energy consumption (kWh) and total cost.
How to Convert Amps to kWh Cost
Follow this formula-based method to calculate cost manually for different systems.
Step 1: Convert Amps to Watts
The formula depends on the electrical system type:
DC (Direct Current):Step 2: Convert Watts to kWh
Step 3: Calculate Cost
Real-Life Example (Three-Phase)
Let’s calculate the cost of a three-phase motor:
- Current = 10 Amps
- Voltage = 400 Volts
- Power Factor = 0.85
- Usage Time = 5 hours
- Electricity Rate = 0.15 per kWh
Step 1: Convert to watts
W = 10 × 400 × 1.732 × 0.85 = 5888.8 W
Step 2: Convert to kWh
kWh = (5888.8 × 5) ÷ 1000 = 29.44 kWh
Step 3: Calculate cost
Cost = 29.44 × 0.15 = 4.42
Final Result:
Energy Consumption = 29.44 kWh
Total Cost = 4.42
Amps to kWh Cost Conversion Chart (220V/400V, 1 Hour, $0.15/kWh)
Assumptions: 1-Phase = 220V, 3-Phase = 400V, Time = 1 hour, Rate = $0.15 per kWh, PF = 1.0
| Amps (A) | 1-Phase kWh | 1-Phase Cost | 3-Phase kWh | 3-Phase Cost |
|---|---|---|---|---|
| 5 A | 1.10 | $0.165 | 3.46 | $0.519 |
| 10 A | 2.20 | $0.330 | 6.93 | $1.039 |
| 15 A | 3.30 | $0.495 | 10.39 | $1.559 |
| 20 A | 4.40 | $0.660 | 13.86 | $2.079 |
| 30 A | 6.60 | $0.990 | 20.78 | $3.117 |
FAQs About Amps to kWh Cost Calculator
It converts electrical current (amps) into energy usage (kWh) and calculates the electricity cost based on your rate, supporting DC and AC systems.
No. You also need voltage, usage time, system type, and electricity rate to get accurate results.
√3 (approximately 1.732) is used to account for the phase difference between line-to-line voltages in a balanced three-phase system.
Yes. In AC systems, the power factor represents efficiency. A lower PF means more current is drawn for the same amount of real energy, which can impact equipment sizing and billing.
It varies by location and provider. Check your monthly electricity bill for the exact "Rate per kWh".