Spreadsheet analysis you can verify

Turn a spreadsheet into a clear, checkable answer.

Upload a workbook, ask a business question, and get a chart-led result with the calculation behind every number.

Try the synthetic sample without preparing a file.
Monthly net salesSYNTHETIC DATA
$23,050
+50.54%
$9,200$13,8502026-022026-03($13,850$9,200) ÷ $9,200 = 50.54%

Ask in plain language

Start with the question you actually need answered.

See the evidence

Results keep source rows, steps, and assumptions close at hand.

Export useful work

Download data snapshots and charts for the next conversation.

A short path from file to finding

The workspace keeps the analysis visible while you refine it.

01

Add data

Upload CSV or XLSX, or start with the built-in sales sample.

02

Ask a question

Describe the comparison, total, trend, or chart you need.

03

Review the steps

Inspect cleaning, derived columns, grouping, and assumptions.

04

Use the result

Adjust the recipe, then export a data snapshot or chart.

Every number comes with its working.

A conclusion is useful only when you can trace it. ToCharts keeps formulas, inputs, row counts, and assumptions beside the result.

  • Formula and substituted values
  • Input fields and rows used
  • Assumptions and source steps

How month-over-month is calculated

(13,8509,200) ÷ 9,200 = 50.54%

Inputs: Net Sales · 15 orders after de-duplication
Assumption: Month comes from Order Date; USD values are not converted.

Designed for focused spreadsheet questions

Current workspace limits keep each analysis quick and reviewable.

10 MiBper upload
5source sheets
10,000 × 50rows × columns
20analysis steps
5charts per result
CSV and XLSX imports are supported. XLSX exports are data snapshots; they do not preserve formulas from the source workbook.