{"slug":"apr-to-apy","name":"APR ↔ APY Converter","category":"fortune","tags":["growing","protecting","everyday"],"tagline":"Nominal vs effective rates — what a quoted APR really costs at your compounding frequency.","endpoint":"https://xearno.tools/api/v1/tools/apr-to-apy","page":"https://xearno.tools/t/apr-to-apy","description":"Converts between nominal APR and effective APY at any compounding frequency. This is the difference between what a rate is called and what it actually does to your balance.","inputSchema":{"type":"object","properties":{"mode":{"description":"Convert","type":"string","enum":["apr-to-apy","apy-to-apr"],"default":"apr-to-apy"},"rate":{"description":"Rate (%)","type":"number","minimum":0,"maximum":200,"default":24},"periods":{"description":"Compounding","type":"string","enum":["365","12","4","1"],"default":"365"}},"required":[],"additionalProperties":false},"methodology":["APY = (1 + APR/n)ⁿ − 1; the inverse solves for APR. n is compounding periods per year."],"usage":"POST https://xearno.tools/api/v1/tools/apr-to-apy with a JSON body matching inputSchema."}