Welcome to Secret Formula. Want to calculate the discount on a product, or compare prices of two products? Perhaps do something else? Then use one of our "formulas" below.

Discount

Price Per Unit

Calculate VAT/Tax

Calculate without VAT

Buy X, get Y free

Trip Fuel Price (Liter/100km)

Trip Fuel Price (MPG)

Splitting costs of a rental

Tip (Fixed percentages)

Tip (Free percentages)

What's new

Secret Formula is a hobby project by Steven Zeegers. It's written in HTML and JAvascript and uses Bootstrap to look fancy