APIFree
Free
Free
Evaluation and low-volume personal integrations.
Contact support to request a free API key.
Request a free API keyKERVONI API
Pricing & API plans
Our web tools are free. API plans connect the same calculators to your software and automations.
APIPro
Pro
149 TL / 30 days
Small applications and regular automations.
One-time payment. No automatic renewal or overage charges.
Buy now →APIBusiness
Business
499 TL / 30 days
Higher-volume business integrations.
One-time payment. No automatic renewal or overage charges.
Buy now →Included calculators
Percentage, discount and markup, profit margin, aspect ratio, DPI and print size, and cm–inch–pixel conversion. All three plans include the same six calculators with different usage limits.
Image and PDF processing web tools are not included in these API plans and remain free in your browser.
Payment & service period
The listed TL amount is the total payable for the plan; no extra tax or service fee is added at checkout. Pro and Business access lasts 30 days from PayTR payment confirmation. A new period requires a new purchase.
Minute and daily limits use rolling 60-second and 24-hour windows. Requests are temporarily blocked at the limit; no automatic extra charge applies.
Payment is handled on PayTR’s secure form. After confirmation, get your API key from the result page in the same browser.
Digital service delivery · Cancellation & refunds · Distance sales terms