Parallelogram area calculator

Calculate parallelogram area from its base and perpendicular height. The height is not the sloping side; check the formula and example before entering values.

Result

Slant changes, area stays

Change the slant while keeping base and height fixed: the area stays the same. Moving a side triangle reassembles a rectangle.

How do you calculate parallelogram area?

Multiply the base by the perpendicular distance between the parallel bases. A sloping side may be longer than this height and cannot replace it.

A = b \times h

How to use the calculator

Enter measurements with a decimal point or comma: results update immediately. Input units apply to every length; changing them converts the measurements. Changing result units leaves the shape unchanged. The control below the drawing reveals or hides its visual explanation. Copy results includes valid measurements and the result. Reset and Try this example restore the initial values and centimetre units.

The first formula shows the relationship; the second substitutes measurements converted to the result unit. The ≈ sign indicates rounding, including in the substituted values.

A slanted tile

A tile with base 6 cm and perpendicular height 4 cm covers 24 cm². Tilting the edge without changing those measurements leaves its area unchanged.

From measurements to the result

Input: $b = 6 cm; h = 4 cm$
Result: $24 {cm}^{2}$

Calculation steps

Identify the base and perpendicular height.
$b = 6; h = 4$
Complete the calculation using the tool’s formula.
$A = 6 \times 4 = 24$

Units and interpretation

Area uses square units: 1 m² = 10,000 cm².

The drawing uses an illustrative slant, adjustable with the selector. Base and height alone do not determine perimeter.

Precision and numerical limits

Lengths range from 0 to 10¹² in the selected unit; triangle sides must be strictly positive. Results use two decimal places, with scientific notation for very small or large values. Calculations use browser precision: unrepresentable positive values produce an error. A rejected unit change keeps the previous data. Calculation takes place in your browser.

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Parallelogram area calculator

Result

Slant changes, area stays

How do you calculate parallelogram area?

How to use the calculator

A slanted tile

From measurements to the result

Calculation steps

Units and interpretation

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