kWh → Cost calculator

Fast sanity check. Standing charge not included in this simple tool.

Usage (kWh)

Unit rate (p/kWh)

Tip: if your bill is far higher, check estimated reads, dates, and tariff changes.

Estimated usage cost

£0.00

Add standing charge

Standing charge is billed per day. Check p/day × days.

Check reads & dates

Wrong reads/period dates are a top cause of surprise bills.