How to use this tool
- 1 Open ROC Year Converter, then enter, paste, or choose the content you want to process.
- 2 Adjust the available options and output format for your task.
- 3 Review the instant result, then copy or download the available output.
ROC Year Converter
Convert a year between Taiwan ROC (Minguo) and Gregorian calendars, e.g. ROC 115 = 2026.
ROC → AD
ROC year
民國115年
Gregorian year
2026
Formula: 115 + 1911 = 2026 Common year
Common use cases
Convert a year between Taiwan ROC (Minguo) and Gregorian calendars, e.g. ROC 115 = 2026. Use it for everyday work, development, learning, or quick verification.
Privacy and data handling
This tool runs in your browser. Before working with sensitive data, make sure you trust your browser and device environment.
Taiwan ROC (Minguo) Year Conversion Rules
The Republic of China (Minguo) calendar defines 1912 as ROC Year 1 (民國元年). The formula is ROC Year + 1911 = Gregorian Year and Gregorian Year − 1911 = ROC Year (e.g., ROC 115 = 2026), with leap-year rules identical to the Gregorian calendar.
This converter covers ROC Year 1 (1912) onward; plain numbers below 1000 are read as ROC years and 1000 or above as Gregorian years, while the prefixes 民國 or 西元 force a specific calendar.
Frequently asked questions
What is the formula between ROC and Gregorian years?
Add 1911 to an ROC year to get the Gregorian year, or subtract 1911 from a Gregorian year. For example, ROC 115 + 1911 = 2026.
How does the converter decide whether a number is ROC or Gregorian?
Numbers below 1000 are treated as ROC years (such as 115) and 1000 or above as Gregorian years (such as 2026). Adding the prefix 民國 or 西元 forces that reading.
Which years are supported by this converter?
It supports ROC Year 1 (Gregorian 1912) up to Gregorian 9999. Earlier years are not supported.
Are ROC leap years the same as Gregorian leap years?
Yes, add 1911 to get the Gregorian year and apply the standard 4/100/400 divisibility rule. For instance, 2026 (ROC 115) is not a leap year.
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