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Mathematiques

Calculatrice vérifiée avec une formule transparente

Mathematiques

Add Percentages Calculator.

Adds two or more percentages together and shows the total percentage. Useful for combining discounts, tax rates, or growth rates.

Les résultats se mettent à jour en direct pendant que vous tapez.
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Vos entrées

Comment ça marche

  1. 1

    Enter the first percentage.

  2. 2

    Enter the second percentage.

  3. 3

    Optionally enter a third percentage.

  4. 4

    The calculator sums all percentages to give the total.

percentage1 + percentage2 + percentage3

Questions fréquentes

Can I add more than three percentages?

This calculator supports up to three percentages. For more, you can add them manually or use a spreadsheet.

What if I enter a percentage greater than 100?

The calculator allows values up to 100, but you can still add percentages that exceed 100 if you need to, though the input limits prevent that. For larger values, consider using a different tool.

Is adding percentages the same as adding their decimal equivalents?

Yes, adding percentages directly is equivalent to adding their decimal forms (e.g., 10% + 20% = 0.10 + 0.20 = 0.30 = 30%).

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Résultats

Formule vérifiée

Total Percentage

30%

Demander n'importe quoi

Estimation à titre indicatif uniquement — vérifiez les décisions importantes avec un professionnel approprié.

Comment ça marche

Adds two or more percentages together and shows the total percentage. Useful for combining discounts, tax rates, or growth rates.

  1. Enter the first percentage.
  2. Enter the second percentage.
  3. Optionally enter a third percentage.
  4. The calculator sums all percentages to give the total.

Formules

Les mathématiques derrière cette calculatrice, écrites pour que vous puissiez vérifier le résultat.

Sum of Percentages

Total % = P1 + P2 + P3

Simply add the percentage values together. This works when percentages are independent and you want the combined total percentage.

Example:

Input: P1 = 10%, P2 = 20%, P3 = 0%

Calculation: 10 + 20 + 0

Result: 30%

Cas d'utilisation réels

Où ce calcul apparaît dans la vie quotidienne.

Combining Discounts

When you have multiple discounts on an item, add them to see the total discount percentage.

Example: 10% off plus 20% off gives 30% off.

Adding Tax Rates

If different tax rates apply to parts of a purchase, add them to get the total tax percentage.

Example: State tax 5% + local tax 2% = 7% total tax.

Growth Rates

When growth rates are additive (e.g., sequential increases), sum them for the overall growth percentage.

Example: Year 1 growth 3% + Year 2 growth 4% = 7% total growth.

Conseils et erreurs courantes

Tips

  • Ensure all percentages are in the same units (%).
  • Use this calculator for simple additive percentages, not for compound growth.
  • If you need to add more than three percentages, do it in groups or use a spreadsheet.
  • Double-check your inputs for typos, especially decimal points.

Common Mistakes to Avoid

  • Mistaking additive percentages for compound percentages (e.g., 10% + 20% is not the same as a 10% increase followed by a 20% increase).
  • Forgetting to include a zero for unused optional fields.
  • Entering percentages as decimals (e.g., 0.1 instead of 10).

Hypothèses et limites

  • Use the stated inputs and units.
  • Results are estimates for planning and education.
  • Check measurements and source data before making an important decision.