With Forex Profit Loss Calculator you can calculate TP and SL order to set in terminal by the amount of profit or loss you need.
How it works:
1) Set Price of the asset you see in the terminal
2) Update Take Profit Amount field and you'll see Price to set in Take Profit Order
3) Update Stop Loss Amount field and you'll see Price to set in Stop Loss Order

You can switch BUY/SELL mode depending on the direction of your planned order
Adjust Lot amount depending on the size of the trade