kWh Usage Reader — Universal Bill Calculator

Upload a usage graph

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Drop a bill or usage chart here or click to browse

Any utility's usage / historical data bar chart — total kWh or average kWh/day, any color scheme

PDFJPGPNGHEIC*

Everything runs in your browser — nothing is uploaded to a server. The tool scans the image for axis labels and units automatically; you'll get a chance to confirm or fix them before it reads the bars. *HEIC depends on the device; JPG/PNG/PDF are most reliable.

Calibrate the graph

Tap 1Tap the bottom baseline of the bars (the zero line).

100%

Pinch / scroll to zoom · drag to pan · tap to place a point

Bars represent

Top gridline value (kWh)

Bar contrast threshold: auto

"Bars represent" auto-sets from the gridline value: 150+ is treated as a monthly total, under 150 as a daily average — override it anytime.

Place 4 reference points: ① the zero baseline, ② the top gridline (enter its value at right), ③ the left edge of the first bar, ④ the right edge of the last bar. Zoom in (pinch on mobile, scroll on desktop) for precise placement — drag to pan, tap to drop a point. The tool detects bar color automatically and measures every bar; fix any misread in the next step.

Monthly usage

Annual usage

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Avg / month

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Avg / day

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Peak month

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First (left-most) bar is

Month	Days	Monthly kWh	Avg kWh/day
Annual total	—	—

Values in the editable column are editable — tweak any bar the auto-reader missed and the totals update instantly.