Percentage Calculator: Find Percentages Instantly
An all-in-one online tool to calculate percentages, including 'percent of', 'percent change', and 'percent increase/decrease'.
Loading calculator...
An all-in-one online tool to calculate percentages, including 'percent of', 'percent change', and 'percent increase/decrease'.
Loading calculator...
A complete suite for percentage math: fractions of numbers, reverse percentages, successive changes, percentage points, error, distributions, and more—using precise Decimal arithmetic.
Switch between modes for common percentage tasks without leaving the page. Get precise results and optional step-by-step breakdowns.
Pick the calculation type that matches your task.
You can include the % sign; lists go line by line.
See the result with steps and any helpful tables.
Control decimals and trailing zeros for reporting.
Moving from 15% to 20% is +5 pp, but +33.33% relative.
Two discounts of 20% and 10% net to −28%, not −30%.
Final after 100% decrease has no valid original; baseline 0 breaks relative change.
Comprehensive percentage calculator supporting 10+ calculation types: percentage of a number, percentage increase/decrease, percentage change, reverse percentages, successive changes, percentage points vs relative change, part-percent-whole solver, percentage error, and percent distribution. Perfect for business, finance, academics, and everyday percentage calculations with step-by-step solutions.
Complete suite including basic percentages, changes, reverse calculations, successive changes, percentage points, error calculations, and distributions.
Profit margins, discounts, tax calculations, markup/markdown, compound changes, and financial analysis with professional accuracy.
Step-by-step solutions, formula explanations, and comprehensive examples perfect for learning, homework, and professional use.
Enhance your calculations with our related tools. Try the Basic Calculator for simple arithmetic, the Scientific Calculator for advanced math, or the BMI Calculator for health calculations.
Important: This percentage calculator is designed for educational, business, and general computational purposes. While calculations are performed using standard mathematical formulas and algorithms, results should be independently verified for critical applications including financial analysis, academic submissions, business decisions, tax calculations, or professional accounting work. The calculator handles various percentage operations including basic percentages, percentage changes, reverse calculations, and compound percentage effects. Individual business contexts, rounding policies, and specific calculation requirements may vary. For professional financial, accounting, or business applications, consult qualified professionals who can provide guidance appropriate to your specific situation and regulatory requirements.
Share this calculator or embed it on your website