Percentage Calculator
Percent of, percent-of-total, and percent change.
Free Calculator Tools
Free calculators for percentages, statistics, interest, loans, VAT, tips, discounts, age, and BMI—all local. Curated wowTools landing with local browser
Introduction
This page collects the calculators people search for mid-task: percentage change, summary statistics from a pasted list, compound interest projections, loan payments, VAT added or removed, tips and bill splits, discounts, ages between two dates, and BMI. Each one shows its component values so you can check the arithmetic rather than trusting a single number.
Featured tools
Statistics Calculator
Count, mean, median, mode, and stdev from a list.
Compound Interest Calculator
Future value and interest earned from compounding.
Loan Payment Calculator
Amortized monthly loan payment and total interest.
VAT Calculator
Add or remove VAT and see net/gross amounts.
Tip Calculator
Tip amount, total, and per-person bill split.
Discount Calculator
Final price and savings from a percent-off discount.
Age Calculator
Age in years, months, and days between two dates.
BMI Calculator
BMI and weight category in metric or imperial.
GPA Calculator
Weighted 4.0-scale GPA from grades and credits.
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Frequently asked questions
- Are these calculators free and account-free?
- Yes. They run in your browser with no sign-up, and the figures you enter are not sent anywhere.
- Which calculator handles percentage change?
- Percentage Calculator covers percent of a value, percent of a total, and percent change. Use percentage points when you are comparing two rates rather than growth.
- Do the finance calculators include taxes and fees?
- No. They compute the arithmetic of the inputs you provide. Add fees, taxes, and rate changes yourself before treating a projection as a plan.
- Is the BMI result a medical assessment?
- No. BMI is a rough population-level screen that ignores muscle mass and body composition. Discuss health decisions with a clinician.
- Can I paste a list of numbers for statistics?
- Yes. Statistics Calculator accepts comma or newline separated values and returns count, sum, mean, median, mode, range, and standard deviation together.