How it works
A = (a + b) × height ÷ 2 (m²)
Input definitions
- Parallel side a (m)
- Enter the value in the labeled unit.
- Parallel side b (m)
- Enter the value in the labeled unit.
- Perpendicular height (m)
- Enter the value in the labeled unit.
A worked example
- Parallel side a (m)
- 4
- Parallel side b (m)
- 6
- Perpendicular height (m)
- 3
15
Assumptions & limits
Uses the stated input units. Results are rounded for display; keep additional precision for subsequent calculations.
Sources & review
Maintained by AnsRio. Methods and examples use automated checks; this does not imply independent professional certification.
Method updated 2026-10-17. Content checked against the stated method and examples. Our verification approach.
Common questions
Can I check the result before using it?
Compare the worked example with your inputs and use the stated method: A = (a + b) × height ÷ 2 (m²). Confirm input units and boundary choices before relying on the result.
How does the Trapezoid area tool work?
A = (a + b) × height ÷ 2 (m²).
What are the assumptions and limits of Trapezoid area?
Uses the stated input units. Results are rounded for display; keep additional precision for subsequent calculations.