Rectangle calculator
Calculates area, perimeter, and diagonal in horizontal and vertical dimensions.
Input
The example value has been entered. Check it immediately or change the value.
Input is processed in the browser. Refreshing returns a sample value.
Result
Check or change the value using the example value result.
Fractional results are displayed up to 12 digits of precision. Please unify units in the input values.
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Calculation·conversion criteria
Calculate area, perimeter, and diagonal of a rectangle.
Input example
Width 3, height 4: diagonal = 5
Width 3, height 4: area = 12, perimeter = 14, diagonal = √25=5. Enter the same length units for both width and height.
How to use
- Use the provided example value or replace the horizontal and vertical fields.
- Click Verify result and check the following result.
- Result can be copied if needed.
Frequently Asked Questions
Can entering screen resolution also show the actual area?
Enter the number of pixels to get the ratio and area per pixel. Actual cm or inch sizes require additional information. If the screen diagonal inch is known, PPI can be calculated using the PPI tool.
Calculation criteria and reference materials
The calculation formula and scope of this tool are disclosed in the above description. Examples can be checked by substituting input values into the formula or following the specified string and calendar handling rules.
Verification of calculation criteria: · Calculation·verification principles · Report errors