m – denoting a quantity consisting of 1,000 items or units. 1000, k, one thousand, thousand.
What does 1000m mean?
M is the Roman numeral for thousand and MM is meant to convey one thousand-thousand — or million. To take it further; one billion would be shown as $1MMM or one-thousand million.
Why is M used for 1000?
M is the Roman numeral for 1,000 but in the metric system M designates the prefix mega- which is a million. … In the metric system lower case k designates kilo as in kg for kilogram, a thousand grams. Even here there is some ambiguity.