assessment — An assessment is a consideration of someone or something and a judgment about them.
appraisal — If you make an appraisal of something, you consider it carefully and form an opinion about it.
estimation — A rough calculation of the value, number, quantity, or extent of something.
calculation — A calculation is something that you think about and work out mathematically. Calculation is the process of working something out mathematically.
valuation — the act of estimating or setting the value of something; appraisal.
estimate — Roughly calculate or judge the value, number, quantity, or extent of.
costing — A costing is an estimate of all the costs involved in a project or a business venture.