Electricity Cost Calculator

Appliance cost from power, hours and tariff with tiered pricing

Quick Answer

Electricity Cost Calculator: Appliance cost from power, hours and tariff with tiered pricing. Daily kWh = power(kW) × hours.

Common appliances (click to fill)

Power (W)

Hours/day

Days

Electricity cost for 30 days

¥130.11

264.0 kWh · Tier 2 pricing applied

Daily usage8.80 kWh

Monthly usage264.0 kWh

Monthly cost¥130.11

Yearly usage3168 kWh

Calculation steps

1Energy = 1100W × 8h × 30d ÷ 1000 = 264.00 kWh
2Tiered pricing: 264.0 kWh → ¥130.11 (vs ¥128.91 at flat Tier-1 rate)
3Projected monthly: 264.0 kWh ≈ ¥130.11

Tiered pricing (Beijing residential, reference)

Tier	Monthly usage	Price
Tier 1 ≤240 kWh	0-240 kWh	¥0.4883/kWh
Tier 2 241-400 kWh ←	241-400 kWh	¥0.5383/kWh
Tier 3 >400 kWh	>400 kWh	¥0.7883/kWh

Appliance monthly cost reference

Appliance	Power	Daily use	Monthly kWh
1.5HP air conditioner	1100W	8h	264.0
Water heater	2000W	2h	120.0
Space heater	2000W	6h	360.0
Refrigerator	100W	24h	72.0
Washing machine	500W	1h	15.0
Desktop PC	300W	8h	72.0
TV	150W	5h	22.5
Router	10W	24h	7.2
LED bulb	10W	6h	1.8

💡 Inverter ACs draw ~50% of rated power once the room reaches setpoint. Standby devices (router, TV box, chargers) can add 30-50 kWh/year — unplug or use smart strips. Local rates vary; check your utility bill.

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How to Use

Enter scenario values: fill real-life numbers into the Electricity Cost Calculator (defaults work for a quick try).
Instant results: everything computes live, no button needed.
Read the advice: results come with practical tips, reference standards and pitfalls.
Compare options: adjust parameters to compare choices side by side.

Key Points

Electricity Cost Calculator is a free online everyday life tool — open and use, no sign-up.
All calculations run locally in your browser; your data never leaves the device.
Key capability: Appliance cost from power, hours and tariff with tiered pricing.
Results come with formulas and reference tables so you can verify every number.

Formula & How It Works

Electricity cost

Daily kWh = power(kW) × hours

Cost = kWh × tariff (monthly ≈ 30 d, yearly ≈ 365 d)

2000W heater × 4 h/day = 240 kWh/month ≈ ¥132 at ¥0.55

FAQ

How do I use the Electricity Cost Calculator?

Open the page and fill in the input fields — results update automatically. Appliance cost from power, hours and tariff with tiered pricing.

Are the results accurate?

Yes. Standard formulas and conversion factors are used and verified.

Is it free? Do I need to sign up?

Completely free. No registration, login or download required.

Does it work on mobile?

Yes. The responsive design works on phones, tablets and desktops.

Is my data saved?

No. Everything runs locally in your browser.

Related Guides

Source & Updates

Based on common formulas and industry conventions. Last updated: 2025-07

Authoritative sources:

National Development & Reform Commission (tariffs)

Last updated: 2026-08-07

Formulas and content on this page are reviewed by the YiJianSuan team. For reference only — official sources prevail.

Cite this page: YiJianSuan. Electricity Cost Calculator[EB/OL]. https://www.yijiansuan.com/en/c/life/electricity-cost

Results provided by this tool are for reference only and do not constitute professional advice.