Rectangle Calculator
Area, perimeter and diagonal of a rectangle.
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About the Rectangle Calculator
Enter length and width to get the area, perimeter and diagonal of a rectangle, in any unit. Useful for rooms, plots, frames, screens and paper sizes.
Formulas
- Area = length × width
- Perimeter = 2 × (length + width)
- Diagonal = √(length² + width²)
مستطیل کیلکولیٹر
لمبائی اور چوڑائی درج کریں اور رقبہ، محیط اور وتر معلوم کریں۔ کمرے، پلاٹ اور فریم کے لیے مفید۔
- رقبہ = لمبائی × چوڑائی
- کسی بھی یونٹ میں
How to use Rectangle Calculator
- Enter your values. Units and defaults are shown beside each field.
- Press Calculate (results also update as you type once calculated).
- Read the result and the step-by-step breakdown with the formula used.
- Copy the result or reset to start again.
Frequently asked questions
How accurate is this calculator?
Calculations use the standard formulas shown on the page, computed in full precision and rounded only for display. The result is only as accurate as the inputs and assumptions listed.
Is it free?
Yes. All tools are free to use without an account.