Konverter tall til og fra romertall
Numbers above 3,999 use vinculum notation: a line above a numeral multiplies its value by 1,000.
So CMXCIXCMXCIXDCXCVIII = 999 999 698.
Did you know?
The Printing Press Killed Roman Numerals
What finally ended Roman numerals in everyday use wasn't better math — it was Gutenberg. Typesetting Hindu-Arabic numerals was easier: ten compact characters vs. seven letters in elaborate combinations. Books, contracts, and ledgers all switched. By 1500, the debate was over.
Read more →Fibonacci's Sales Pitch
Fibonacci didn't invent Hindu-Arabic numerals — they originated in India around 500 AD. But his 1202 book Liber Abaci was essentially a 600-page argument that these new numbers were better for business. He showed European merchants how place value and zero could transform trade and banking. He was right. By 1500, the debate was over.
Read more →Hvor kommer romertall fra?
Man tror romertall stammer fra håndsignaler og tellemerker. Streken I representerer en finger, V representerer åpningen mellom tommel og fingre for fem, og X representerer kryssede hender for ti. Bokstavene L, C, D og M kommer fra modifikasjoner av greske bokstaver som chi, theta og phi for å representere 50, 100, 500 og 1 000. Over tid ble disse merkene til de latinske bokstavene folk kjenner igjen i dag. Det finnes ingen 0 i det romerske alfabetet, ettersom konseptet for tallet 0 ikke ble fullt utviklet før India oppfant det rundt 600 e.Kr. / 10600 HE.