Enter Load Details
Example Data Table
| Current | Voltage | Phase | Hours | Power Factor | Approx Daily Units |
|---|---|---|---|---|---|
| 5 A | 230 V | Single Phase | 8 | 0.90 | 8.28 kWh |
| 10 A | 230 V | Single Phase | 8 | 0.90 | 16.56 kWh |
| 15 A | 400 V | Three Phase | 6 | 0.85 | 52.99 kWh |
| 20 A | 24 V | DC | 10 | N/A | 4.80 kWh |
Formula Used
Single Phase AC: Units = Voltage × Amps × Power Factor × Efficiency × Hours × Days × Load Factor ÷ 1000
Three Phase AC: Units = √3 × Voltage × Amps × Power Factor × Efficiency × Hours × Days × Load Factor ÷ 1000
Direct Current: Units = Voltage × Amps × Efficiency × Hours × Days × Load Factor ÷ 1000
Cost: Total Cost = Units × Tariff + Fixed Charges
How to Use This Calculator
Enter current in amps first. Add the voltage used by the equipment. Select the correct supply type. Add daily running hours and total days. Enter power factor for AC loads. Keep it near one for resistive loads. Use a lower value for motors. Add efficiency and load factor when equipment does not run at full capacity. Press the calculate button. The result appears above the form. You can then download CSV or PDF reports.
Amp to Unit Conversion Guide
Why Amp Conversion Matters
An amp value shows current flow. It does not show energy alone. Energy depends on voltage, time, phase, and load behavior. This calculator links those details together. It changes current into useful electricity units. One unit normally means one kilowatt hour. That is the common billing unit used by many electricity providers.
Understanding the Main Inputs
Current tells how much electrical charge moves through the circuit. Voltage tells the pressure behind that flow. Power factor shows how effectively AC power becomes real work. Efficiency adjusts losses in motors, inverters, chargers, and other devices. Load factor helps when a machine cycles on and off. These inputs make the result more practical than a simple amp table.
Daily and Monthly Planning
The tool is helpful for homes, shops, workshops, offices, pumps, heaters, chargers, and small industrial loads. You can estimate daily units from running hours. You can also estimate a custom period by changing days. This makes budgeting easier. It also helps compare different machines before buying or replacing equipment.
Single Phase, Three Phase, and DC Loads
Single phase appliances are common in homes and small offices. Three phase systems are common for larger motors and commercial equipment. DC loads are found in battery systems, solar setups, LED circuits, and electronics. Each system uses a different power formula. That is why the phase selector is important.
Cost and Emission Review
The tariff field estimates energy cost. Fixed charges can include meter rent, service charges, or extra billing fees. The emission field estimates carbon output from electricity use. This is useful for reports and energy audits. Results are only estimates. Real bills may include taxes, slabs, peak rates, and provider rules.
Better Energy Decisions
Use the calculator before running heavy appliances for long periods. Test different hours and load factors. Compare low efficiency and high efficiency equipment. Small changes can reduce monthly units. Better planning can lower costs and improve energy control.
FAQs
What is one electrical unit?
One electrical unit usually means one kilowatt hour. It is the energy used by a one kilowatt load running for one hour.
Can amps be converted directly to units?
No. You also need voltage and time. AC loads may also need power factor, efficiency, and phase type for better accuracy.
Which formula should I use for home appliances?
Most home appliances use the single phase AC formula. Use voltage, amps, power factor, efficiency, hours, and days.
Why is power factor important?
Power factor shows how much supplied AC power becomes useful real power. Motors and inductive loads often have lower power factors.
What is load factor?
Load factor shows average usage compared with full load. Use it when equipment runs part time or cycles during operation.
Can this calculator estimate electricity cost?
Yes. Enter your tariff per unit and fixed charges. The calculator multiplies units by tariff and adds fixed charges.
Does this work for three phase motors?
Yes. Select three phase AC. Add line voltage, current, power factor, efficiency, running hours, and operating days.
Are the results exact?
The results are good estimates. Actual bills can change because of taxes, slab rates, peak pricing, wiring losses, and meter readings.