diff --git a/README.md b/README.md
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-#cli-calculator
+# cli-calculator
+
+Calculator with various formulas for common and uncommon problems.
+
+---
+
+## goal
+My goal for this project is to write an open sourced mathmatical library for C. 
+
+---
+
+## list of calculators
+- Hypotenuse calculator (a²+b²=c²)
+- Area of a circle (πr²)
+- Matrix arithmetics
+    - Determinant of 2*2 matrix
+    - Scalar multiplication
+    - Matrix addition
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