// multi-utility computation suite · offline · instant · precise
┌──────────────────────────┐
│ [c] calcalyst_ │
│ computation suite │
└──────────────────────────┘
// select a module to initialize
/ search↵ open firstesc close
// adsenseEMPTY_LEADER_SLOT728×90
// adsenseMOBILE_ANCHOR_SLOT320×50
// keyboard_shortcuts
/focus search
↑↓navigate module list
Enter
open first result from search
open highlighted
compute when module is open
compute when focused in a field
Escclose module · clear selection
⌫
finance.business-rule-of-forty Calculator
Calculates the Rule of 40 score (revenue growth rate + profit margin) in a business finance context. Rule of 40 score above 40 indicates a healthy balance between growth and efficiency — it's the key metric investors use to assess SaaS business quality.
Inputs
Growth
Annual percentage increase. Enter as a percentage. Compound growth is exponential — small differences in rate become enormous over long periods.
Margin
Profit as a percentage of revenue. Margin % is always lower than markup % — a $5 profit on a $15 selling price is 33% margin but 50% markup.
Arr
Rate of charge flow (A). I = V/R. Above ~100 mA through the body can be lethal. Fuses protect against overcurrent.
Results
rule of 40 score
A numerical rating from the scoring model in use.
grade
Letter or numerical grade indicating quality, creditworthiness, or performance on a defined scale.