Survey calculators and research tools

• The survey response rate calculator divides completed responses by the number of people invited, which is the standard way to check whether a sample size supports the conclusions you want to draw from it.
• The employee Net Promoter Score calculator turns promoter, passive, and detractor counts into the standard eNPS figure: the share of promoters minus the share of detractors, expressed as a single number.
• Both are meant to be used while you have real response data in front of you, not as abstract examples.

• Use the response rate calculator any time a survey just closed and you need to know whether the numbers are worth building a chart from. It only needs two counts: invited and completed.
• Use the eNPS calculator once you have your 0-to-10 recommendation scores sorted into promoters, passives, and detractors. It's built for the closing recommend-this-employer question, not for a whole engagement question set.
• If you're running the employee engagement survey template, plan to use both: response rate first to confirm your sample holds up, then eNPS on the closing question once you know it does.

A calculator gives you a number, not an interpretation. A low response rate on a small team means something different than the same rate on a thousand-person survey, and a single eNPS score means less than the same score tracked over three or four cycles.

Methodology explains how we think about sample size, response bias, and what a single figure can and can't tell you before you present it to anyone else.