Convert numbers to Roman numerals and back, with each step explained.
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X% of Y, what percent one number is of another, percentage change, and increasing or decreasing by a percentage.
Length, weight, temperature, area (including bigha, katha and decimal), volume, speed, data and more.
This year is …
Like 1994, 2026 or 3888.
MCMXCIV
1,994 = 1,000 + 900 + 90 + 4 = M + CM + XC + IV
| Place | Value | Numeral | Because |
|---|---|---|---|
| Thousands | 1,000 | M | 1,000 |
| Hundreds | 900 | CM | 1,000 − 100 |
| Tens | 90 | XC | 100 − 10 |
| Ones | 4 | IV | 5 − 1 |
Like MCMLXXI. Capital or small letters both work.
1,971
MCMLXXI = M + CM + LXX + I = 1,000 + 900 + 70 + 1
| Place | Value | Numeral | Because |
|---|---|---|---|
| Thousands | 1,000 | M | 1,000 |
| Hundreds | 900 | CM | 1,000 − 100 |
| Tens | 70 | LXX | 50 + 10 + 10 |
| Ones | 1 | I | 1 |
| Symbol | Value |
|---|---|
| I | 1 |
| V | 5 |
| X | 10 |
| L | 50 |
| C | 100 |
| D | 500 |
| M | 1,000 |
| Symbol | Value | Worked out as |
|---|---|---|
| IV | 4 | 5 − 1 |
| IX | 9 | 10 − 1 |
| XL | 40 | 50 − 10 |
| XC | 90 | 100 − 10 |
| CD | 400 | 500 − 100 |
| CM | 900 | 1,000 − 100 |