What is lot?

Spot Forex is traded in lots. The standard size for a lot is 100,000 units. There is also a mini lot size and that is 10,000 units. As you already know, currencies are measured in pips, which is the smallest increment of that currency. To take advantage of these tiny increments, you need to trade large amounts of a particular currency in order to see any significant profit or loss.
Let’s assume we will be using a 100,000 unit (standard) lot size. We will now recalculate some examples to see how it affects the pip value.
USD/JPY at an exchange rate of 119.80
(.01 / 119.80) x 100,000 = $8.34 per pip
USD/CHF at an exchange rate of 1.4555
(.0001 / 1.4555) x 100,000 = $6.87 per pip
In cases where the US Dollar is not quoted first, the formula is slightly different.
EUR/USD at an exchange rate of 1.1930
(.0001 / 1.1930) X 100,000 = 8.38 x 1.1930 = $9.99734 rounded up will be $10 per pip
GBP/USD at an exchange rate or 1.8040
(.0001 / 1.8040) x 100,000 = 5.54 x 1.8040 = 9.99416 rounded up will be $10 per pip.
Your broker may have a different convention for calculating pip value relative to lot size but whichever way they do it, they'll be able to tell you what the pip value is for the currency you are trading is at the particular time. As the market moWves, so will the pip value depending on what currency you are currently trading.