Trapezoid area calculator
ClientTrapezoid area averages the parallel bases then multiplies by height—enter a, b, and h.
Area = (a+b)h/2 for parallel bases a,b and height h.
About Trapezoid area calculator
Area = (a+b)h/2 for parallel bases a,b and height h. The interactive transform on this page runs in your browser tab—Toolcore does not need your paste for the core operation described above.
How to use this page
Paste or type in the main workspace, run the primary action from the toolbar, then copy or download the result. Use Load example when the page offers it, or URL prefill (?q= / ?qb=) so agents and tickets open the same input.
Common use cases
- Use trapezoid area calculator during homework or spreadsheet spot checks.
- Copy results into notes without sending data to a server.
Common mistakes to avoid
Wrong units
Keep length, area, and volume inputs in consistent units.
FAQ
Is data uploaded?
No—all math runs locally in your browser.
More tools
Related utilities you can open in another tab—mostly client-side.
Rectangle area calculator
ClientMultiply width × height for rectangle area—simple planar geometry.
Triangle area (Heron's formula)
ClientArea from three side lengths using Heron's formula—validates triangle inequality first.
Area converter
Clientmm² to km², sq ft, sq yd, acres (43,560 ft²), hectares—paste one area, see every column.
Math expression evaluator
ClientEvaluate basic + − × ÷ arithmetic with parentheses in your browser—no variables.