IndCalc
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Solve core percentage calculations in one premium page: percent of a number, what percent one number is of another, percentage difference, percentage change, increase, decrease, and reverse percentage.
This section handles the three most common percentage questions people ask in school, business, pricing, analytics, and finance.
Use this when comparing two values and neither one is the true starting point.
Use this to measure movement from an original value to a new value.
Apply a percentage increase or decrease directly to a number.
Work backward from a final value after a percentage increase or decrease.
Discover more powerful tools designed for speed, precision, and modern workflows.
Convert CGPA to percentage and percentage to CGPA across Indian and US grading systems.
Calculate sale price after % off, savings, and stacked-discount math.
Restaurant tip + bill split with tax/GST.
Calculate GST amounts for inclusive and exclusive pricing.
Estimate loan EMI, interest, and repayment totals.
Compute CAGR and overall percentage growth between any two values.
Project long-term SIP investment growth with recurring contributions.
Calculate income tax slab-wise for AY 2025-26 and AY 2026-27.
Convert values between currencies for finance and travel workflows.
This Percentage Calculator brings the most common percentage formulas into one page so users can solve core percentage problems without switching tools. It includes percentage of a number, what percent one number is of another, original number from a percentage, percentage difference, percentage change, and direct increase or decrease calculations.
The page also includes a reverse percentage calculator as an extra IndCalc-style utility. This is useful when you know a final amount after a discount, gain, or reduction and want to recover the original value quickly.
By combining education-focused math phrases with business-friendly workflows such as price increases and reverse discounts, the calculator is useful for students, analysts, retailers, finance users, and everyday consumers.
Choose the section that matches your question. If you need to solve a phrase like what is 18 percent of 2500, use the common phrases calculator. If you need to compare values, use percentage difference or percentage change depending on whether one number is the original base.
Use the increase or decrease by percentage section when you want to directly apply a percentage to a number. Use reverse percentage when you have the final value after a percentage move and need the original starting value.
All sections are optimized for mobile and desktop use, making it easy to run quick math, pricing, tax, and analytics calculations from one page.