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13 tools across 4 categories, all free and instant.

General Math

Percentage

Percentage Calculator

Calculate percentages, increase/decrease and find what % one number is of another.
Average

Average Calculator

Find the mean, median, and mode of a set of numbers.
Random

Random Number Generator

Generate truly random numbers within a specific range.

Finance

Loan

Loan Calculator

Calculate monthly payments and total interest for loans.
Tax

VAT Calculator

Add or remove Value Added Tax from a price.
Discount

Discount Calculator

Calculate sale price and savings.
Tip

Tip Calculator

Calculate tips and split bills easily.
Compound Interest

Compound Interest Calculator

Calculate investment growth with daily, monthly, quarterly or yearly compounding.
Currency

Currency Converter

Convert between major world currencies using live exchange rates.

Health & Lifestyle

Health

BMI Calculator

Calculate Body Mass Index with metric or imperial units.

Time & Productivity

Time

Age Calculator

Calculate exact age in years, months, and days.
Productivity

Hours Worked

Track work hours and calculate wages.
Why CalcHero

Precision by design

Every calculation runs entirely in your browser. No servers, no accounts, no waiting. Type a number and get the answer — that's it.

Built to be fast by default, private by design, and free without conditions. 13 tools and counting.

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