1 - 
https://www.cashbackforex.com/tools/position-size-calculator

2- 
https://www.forexsignals.com/lot-size-calculator

3 -
https://forexbee.co/forex-lot-size-calculator/

4 -
https://www.asiaforexmentor.com/position-size-calculator/

5- 
https://marketnerd.com/lot-size-calculator/