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Electricity Cost Calculator

Lifestyle Tools

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)

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

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

Tiered pricing (Beijing residential, reference)

TierMonthly usagePrice
Tier 1 ≤240 kWh0-240 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

AppliancePowerDaily useMonthly kWh
1.5HP air conditioner1100W8h264.0
Water heater2000W2h120.0
Space heater2000W6h360.0
Refrigerator100W24h72.0
Washing machine500W1h15.0
Desktop PC300W8h72.0
TV150W5h22.5
Router10W24h7.2
LED bulb10W6h1.8

💡 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

  1. Enter scenario values: fill real-life numbers into the Electricity Cost Calculator (defaults work for a quick try).
  2. Instant results: everything computes live, no button needed.
  3. Read the advice: results come with practical tips, reference standards and pitfalls.
  4. 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.

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Source & Updates

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

Authoritative sources:

Last updated:

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

Maintained and periodically reviewed by the YiJianSuan editorial team — review process in ourEditorial Policy.

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.