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🏷️ Percent Off Calculator • modern UI

💱 Currency ?

🧩 Amount unit ?

🛠️ Inputs

💵 Original price ?

Money

📉 Percent off ?

🧾 Sales tax

✅ Include sales tax? ?

If selected, tax will be calculated on the final price.

🧮 Tax rate ?

📊 Results

🏁 Final price

💸 Savings

⚡ Quick summary

Enter original price & percent off to see savings and final price.

🧩 Step-by-step derivation

Waiting for input…

📚 Reference formulas

Discount math:

Savings = Original × (off)

Final (pre-tax) = Original − Savings = Original × (1 − off)

If tax enabled: Final (with tax) = Final (pre-tax) × (1 + tax)

“off” and “tax” are decimal forms; convert from % via value/100.

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