What is the difference between 打算 (dǎ suàn) and 计划 (jì huà)
打算 means 'intend to'(v) ; 'intention'(n) .  


Edit:

'打算' can mean 'to plan' (e.g. 为将来打算) or 'intend to' (e.g. 打算将来去英国) in English 

A '打算' can be an 'intention' or a 'plan'


  计划 means 'to plan' (v) ; 'plan' (n). 


When you 计划 (plan) something, you are formulating a workable plan with at least some form of mental calculations, and the objective should be a specific one. For example, 政府計劃[十年內逐步削減赤字, 達到收支平衡]. Which is a very specific objective

A '计划' is a 'plan'