# Calculation types
<a name="v12-panels-calculation-types"></a>

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This documentation topic is designed for Grafana workspaces that support **Grafana version 12.x**.  
For Grafana workspaces that support Grafana version 10.x, see [Working in Grafana version 10](using-grafana-v10.md).  
For Grafana workspaces that support Grafana version 9.x, see [Working in Grafana version 9](using-grafana-v9.md).  
For Grafana workspaces that support Grafana version 8.x, see [Working in Grafana version 8](using-grafana-v8.md).

The following table contains a list of calculations you can perform in Grafana. You can find these calculations in the **Transform** tab and in the bar gauge, gauge, and stat visualizations.


| Calculation | Description | 
| --- | --- | 
| All nulls | True when all values are null | 
| All values | Array with all values | 
| All unique values | Array with all unique values | 
| All zeros | True when all values are 0 | 
| Change count | Number of times the field’s value changes | 
| Count | Number of values in a field | 
| Delta | Cumulative change in value, only counts increments | 
| Difference | Difference between first and last value of a field | 
| Difference percent | Percentage change between first and last value of a field | 
| Distinct count | Number of unique values in a field | 
| First | First value in a field | 
| First\$1 (not null) | First, not null value in a field (also excludes NaNs) | 
| Last | Last value in a field | 
| Last\$1 (not null) | Last, not null value in a field (also excludes NaNs) | 
| Max | Maximum value of a field | 
| Mean | Mean value of all values in a field | 
| Variance | Variance of all values in a field | 
| StdDev | Standard deviation of all values in a field | 
| Min | Minimum value of a field | 
| Min (above zero) | Minimum, positive value of a field | 
| Range | Difference between maximum and minimum values of a field | 
| Step | Minimal interval between values of a field | 
| Total | Sum of all values in a field |