APR to monthly rate calculator

Convert a headline APR into a period rate.

Built and reviewed by Dovanic, Founder and editor, FreeByteLast reviewed: 2026-08-18

APR

19.9%

Monthly rate

1.658%

Daily rate

0.0545%

With these inputs, monthly rate comes to 1.658%. Daily rate works out to 0.0545%. The result assumes apr stays at 19.9%.

What moves the number · Monthly rate

Input	−10%	Now	+10%
APR	1.492%	1.658%	1.824%

Whatmakesequal

Save this set of inputs, change something, then save again to compare the outcomes side by side.

Convert a headline APR into a period rate.

With the defaults above, monthly rate works out at 1.658%.