online calculator

Free online calculator, all calculations done locally in the browser.

function description

• base operation: Support add (+), subtract (-), multiply (×), divide ($>) four operations
• bracket operation: Support parenthesis to set operation priority
• percentage: support percentage (%) calculation
• sign: Support sign switching (±)
• computation history: Automatically save calculation records for easy retrieval
• keyboard support: Support keyboard input numbers and operators, Enter calculation, Escape clearance