DECIMALTOROMAN.COM

v1.1

DECIMAL TO
ROMAN

Convert decimal numbers to Roman numerals and vice versa instantly. All processing happens in your browser for maximum security.

CLIENT-SIDE
FREE
SECURE

🔒 PRIVACY FIRST

All conversions happen in your browser - your data never leaves your device.

⚡ REAL-TIME

See results instantly as you type with automatic format validation.

ROMAN NUMERAL TOOLS

Roman Year

Convert years to Roman numerals

Birthday Roman

Your birthday in Roman numerals

Roman Math

Calculate with Roman numerals

Roman Validator

Check if Roman numerals are valid

ANCIENT NUMERALS

Greek Numerals

Ancient Greek number system

Hebrew Numerals

Hebrew Gematria system

Chinese Numerals

Traditional Chinese numbers

Mayan Numerals

Ancient Mayan vigesimal system

Egyptian Numerals

Ancient Egyptian hieroglyphs

Babylonian Numerals

Cuneiform number system

NUMBER TOOLS

Number to Words

Convert numbers to written form

DATE TOOLS

Days Between

Calculate days between dates

Days Until

Count days until future date

Days Since

Count days since past date

Age Calculator

Calculate exact age

Date Add/Subtract

Add or subtract days

Weekday Calculator

Find day of the week

PRIVACY FIRST

All conversions happen locally in your browser. Your data never leaves your device.

INSTANT RESULTS

Real-time conversion as you type with optimized algorithms for immediate feedback.

DEVELOPER READY

Built for professionals with proper error handling and validation.