What This Subtotal Average Tool Does
A subtotal average is useful when a list has visible rows, hidden rows, and filtered rows. It gives a cleaner average than a simple total divided by every row. This calculator follows that idea. It lets you enter many values, mark rows as hidden, and remove filtered rows from the calculation. You can also apply a conversion factor to each row before the average is found.
Why Subtotal Rules Matter
Spreadsheets often hold mixed data. Some rows may be hidden for review. Some rows may be filtered out because they belong to another group. A normal average may still count unwanted values. A subtotal average can follow the view that matters. This helps when converting units, checking sample results, or building a summary for a report.
Advanced Inputs
Each row has a label, a value, a conversion factor, a weight, and row controls. The factor changes each value into a target unit. A factor of one keeps the value unchanged. The weight field lets you create a weighted average when needed. You can switch between standard subtotal logic and hidden-row aware logic. This makes the result easy to audit.
Conversion Use Cases
The tool fits many conversion tasks. You can average converted lengths, costs, times, rates, scores, or measured readings. For example, enter inch values and use 2.54 as the factor to average centimeters. You can also average prices after currency adjustment, or average production readings after scale correction. The table keeps every row readable.
Export And Review
After calculation, the result appears below the header and above the form. The summary shows count, subtotal, average, weighted average, and skipped rows. CSV export helps move the results into a spreadsheet. PDF export creates a simple report for sharing. Always review row labels, factors, and exclusions before using the result in formal work.
Accuracy Tips
Use consistent source units for each row group. Check every conversion factor twice. Do not mix filtered rows with hidden rows unless that is intended. Use subtotal mode one for broad reviews. Use mode one hundred one when hidden rows should not count. For weighted work, make sure weights describe real importance, size, or frequency clearly for audit notes.