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What is 20% of 150?30
Money, maths and everyday questions answered in seconds, with official figures and their dates. Everything is calculated on your device, and once you have opened zet4u it keeps working with no internet.
Most used
- Percentage calculatorWhat is 20% of 150?
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- Age calculatorYears, months and days
- Unit converterAny length, weight or volume
- VAT calculator120 with 20% VAT = 100 + 20
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Games that work offline
- SudokuFour levels, one solution per puzzle, hints that explain why.
- SolitaireClassic Klondike: draw one or three, hints and deal codes.
- Spider SolitaireOne, two or four suits: build King to Ace and clear the table.
- FreeCell31,999 numbered deals, and every single one can be won.
- MinesweeperThree classic boards, a safe first click, flags with a long press.
- 2048Slide and merge the tiles. Can you reach 2048 – and beyond?
- SnakeEat, grow and never bite your tail. Three speeds, walls on or off.
- Tic-tac-toeFour boards, three levels, two players on one phone.
- How to solve a 3×3 cubeSeven steps, every formula animated, and a cube to practice on.
Made for the whole world
Works offline
Open zet4u once with internet and it saves itself on your device. On a plane, underground or abroad without data, the tools and games keep working.
Private by design
Calculations run in your browser. The numbers you type are never sent to us or anyone else. Analytics only with your consent.
Official figures, dated
Rates and thresholds come from official sources such as the European Central Bank and GOV.UK, and every result tells you how current its data is.