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Everyday money
This section handles everyday money questions: discounts, final prices and whether an offer is as good as it looks.
The calculations are for reference and stay away from banking products — no loans, rates or investment projections here.
Calculators in this section
Complete alphabetical list · 13
- Budget Calculatorbudget calculatorOpen →
- Discount Calculatordiscount calculatorOpen →
- Emergency Fund Calculatoremergency fund calculatorOpen →
- Inflation Calculatorinflation calculatorOpen →
- Margin and Markup Calculatormargin calculatorOpen →
- Net Worth Calculatornet worth calculatorOpen →
- ROI Calculatorroi calculatorOpen →
- Sales Tax Calculatorsales tax calculatorOpen →
- Savings Goal Calculatorsavings goal calculatorOpen →
- Simple Interest Calculatorsimple interest calculatorOpen →
- Split Bill Calculatorsplit bill calculatorOpen →
- Tip Calculatortip calculatorOpen →
- Unit Price Calculatorunit price calculatorOpen →
What these calculators cover
- Sale price and the amount saved.
- Percentage off from the original and final price.
- Stacked discounts, which never simply add up.
Reading an offer
Shops often list discounts one after another: “20% off plus another 10%”. The second cut applies to the reduced price, so the total is smaller than the sum — quicker to verify with a calculator than in your head at the shelf.
Frequently asked questions
Is sales tax included?
No, the calculation works from the item price.
Can I find the price before a discount?
Yes, the reverse mode derives the original price from the final price and the percentage.
Do two discounts add up?
No: 20% and 10% come to 28%, not 30%.