Interest Rate Converter (D/M/Y)

Tool Guide

About the Online Daily/Monthly/Annualized Loan Interest Rate Calculator

The online daily/monthly/annualized loan interest rate calculator quickly converts between daily, monthly, and annualized interest rates, making it ideal for estimating the cost of online loans, consumer loans, Jiebei, private lending, and other borrowing scenarios.

Just enter any one rate basis (such as daily, monthly, or annual rate), and the tool automatically calculates the others, helping you more intuitively compare the true funding cost of different loan options.

The lending industry commonly uses the "wan" notation; for example, if a 10,000-yuan loan charges 5 yuan of interest per day, that is "wan 5", corresponding to a daily rate of 0.05%. To continue calculating total interest and total principal plus interest, you can pair this with the online loan interest calculator.

Key Features

1. Four Calculation Modes

Supports daily-rate mode, monthly-rate mode, annual-rate mode, and daily wan mode. Select the mode matching your actual business basis, then calculate.

2. One-Click Conversion to All Three Rate Results

Based on the current input basis, it automatically outputs the daily, monthly, and annual rate results, making comparison on a unified basis easy.

3. Ideal for Comparing Loan Options

Use it for comparing loan quotes across platforms, verifying contract rates, and quickly estimating borrowing costs.

How to Use the Online Daily/Monthly/Annual Rate Calculator

Step 1: First select the calculation mode (daily-rate, monthly-rate, annual-rate, or daily wan mode).

Step 2: Enter the known rate value in the current mode. For daily, monthly, and annual rate modes, enter a percentage; for daily wan mode, enter the number directly (for wan 5, enter 5).

Step 3: Click "Calculate", and the system automatically converts the other two rate results.

Step 4: View the daily/monthly/annual rate conversion results to compare borrowing costs.

Example: Enter a daily rate of 0.05%, and the system automatically converts it to a monthly rate of 1.5% and an annual rate of 18%.

Daily wan example: Enter 5 (i.e. wan 5), and the system automatically converts it to a daily rate of 0.05%, a monthly rate of 1.5%, and an annual rate of 18%.

Daily/Monthly/Annualized Rate Conversion Formulas

Monthly rate = daily rate × 30

Annualized rate = daily rate × 360

Daily rate = monthly rate ÷ 30, or annualized rate ÷ 360

Note: By default, this tool uses the basis common in financial scenarios, i.e. 1 month = 30 days and 1 year = 360 days.

Use Cases

Suitable for online-loan rate conversion, loan contract rate verification, cash-loan cost comparison, pre-loan risk assessment, and similar scenarios.

Loan Rate Calculation FAQ

Which rate calculations does this tool support?

The online lending rate calculator supports conversion between daily, monthly, and annual rates.

Why use the annualized rate for calculation?

The annualized rate helps you fully understand the long-term cost of a loan and makes it easy to compare different loan products.

Are there unit requirements for the entered rate?

Just enter the number directly. Daily/monthly/annual rate modes treat the input as a percentage by default (e.g. 0.05 means 0.05%); daily wan mode has no percent sign, so just enter values like 5, 6, or 8.

How do I calculate the daily rate?

The daily rate can be obtained by dividing the monthly rate by 30 or the annual rate by 360.

How should I enter "wan 5"?

You can enter 5 directly in the "wan" input box, or enter 0.05 in the daily-rate input box; both represent the same basis.