Enter mitotic and total cell counts for one or more fields to calculate the overall mitotic index.
Answer
8.52%
Mitotic index
Mitotic cells: 26
Total cells: 305
Non-mitotic cells: 279
Fields counted: 4
Examples
Average field index
8.47%
Highest field
Field 2 · 9.76%
| Field | Mitotic cells | Total cells | Non-mitotic cells | Mitotic index |
|---|---|---|---|---|
| Field 1 | 6 | 75 | 69 | 8% |
| Field 2 | 8 | 82 | 74 | 9.76% |
| Field 3 | 5 | 70 | 65 | 7.14% |
| Field 4 | 7 | 78 | 71 | 8.97% |
Mitotic index = mitotic cells / total cells x 100For multiple fields, the overall index uses total mitotic cells divided by total counted cells across all valid fields.
| Symbol | Variable | Description |
|---|---|---|
| Mitotic cells | Dividing cells | Cells observed in mitosis. |
| Total cells | Counted cells | All cells counted in the field. |
Count each field
Enter mitotic cells and total cells for each microscope field or sample.
Add rows as needed
Use multiple fields when you want an overall index across repeated counts.
Read the summary
The top answer shows the pooled mitotic index. The table shows each field separately.
The pooled index is usually the value to report when multiple fields are counted.
| Result | Use |
|---|---|
| Mitotic index | Overall percentage of counted cells in mitosis |
| Average field index | Mean of the field-level percentages |
| Highest field | Field with the largest mitotic percentage |
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