The original value of a livre was one pound of silver, which was worth about $263.08 on September 19, 2014. When the franc took the place of the livre, it was worth about 0.9877 of a franc, which, based on the fixed franc-to-euro exchange rate, is about $0.19 today.
From the time of Charlemagne in 781, when he set its value, until the end of the French Revolution in 1795, when the franc took its place, France’s currency was the livre. At the start of the 21st century, the euro replaced the franc at a rate of 1 euro = 6.55957 francs.