Friendly Maths
Maths explained like you're five.
Monivec exists because maths shouldn't make you feel stupid. Simple tools, real-world stories, and no jargon.
No registration • No paywall • Just help
What is X% of Y
Find out how big a slice of the pie you have.
X is what % of Y
See how much of the total your number takes up.
Percentage Increase or Decrease
Measure how much something grew or shrunk.
Tip Calculator
Quickly find the right tip for your meal.
Discount Calculator
Find out the final price after a sale.
VAT Calculator (UK)
Work out the VAT on a price, or find the price without it.
Exam Grade Calculator
See what percentage you got on your test.
Percentage Error
Find out how far off your estimate was from the real answer.
Compound Interest
See how your savings turn into even more savings.