Kalkulator Persentase

Kalkulator ini memberikan perhitungan instan dan akurat di bidang ini. Masukkan data Anda dan dapatkan hasil segera dengan penjelasan yang jelas. Alat gratis ini bekerja sepenuhnya di browser Anda — tanpa transfer data, tanpa registrasi.

Perhitungan akurat di bidang ini memerlukan pemahaman rumus dan standar yang mendasarinya. Kalkulator kami menerapkan metode yang paling banyak diterima yang direkomendasikan oleh lembaga internasional dan konsensus ilmiah. Hasilnya berguna untuk keuangan pribadi, pemantauan kesehatan, proyek teknis, atau tujuan pendidikan. Alat ini memproses data Anda secara lokal untuk menjaga privasi. Gratis, tanpa registrasi.

Five essential percentage calculations everyone uses

Our Percentage Machine offers five dedicated modes covering the complete landscape of real-world percentage problems: (1) X% of Y — the classic percentage-of-a-number (a 20% discount on a €150 item = €30). (2) Percentage Change — going from one value to another as a percentage (a salary increasing from €40,000 to €45,000 = 12.5% increase). (3) X is what % of Y — finding the percentage that one number represents of another (87 correct answers out of 120 = 72.5%). (4) Add % to a number — applying a markup or tax (€100 + 21% VAT = €121). (5) Subtract % from a number — applying a discount or reduction (€200 − 15% = €170). Each mode shows the full formula so you understand the calculation, not just the answer.

Compound percentage change: a common misconception

If a price increases by 25% and then decreases by 25%, most people assume the net change is zero. It is not: a 25% increase to €100 gives €125, then a 25% decrease gives €93.75 — a net loss of 6.25%. This is because percentage changes are multiplicative, not additive. This same principle applies to investment returns, inflation and compound interest. For all restaurant-specific percentage work, our dedicated Tip Calculator handles bill splitting and cultural tipping norms by country.