Tool library

All free online tools

Calculators and converters for money, health, study and writing. Click a tool to open it.

EMI

Loan EMI Calculator

Finance

Monthly installment, total interest and full repayment schedule.

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%

Compound Interest Calculator

Finance

See how savings grow with monthly deposits.

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SI

Simple Interest Calculator

Finance

Interest on a fixed amount at a flat yearly rate.

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2.5

Zakat Calculator

Finance

Work out zakat on cash, gold, silver and savings.

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−%

Discount Calculator

Finance

Final price and savings after a percentage discount.

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TIP

Tip & Bill Split Calculator

Finance

Tip amount and how much each person pays.

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PM

Profit Margin Calculator

Finance

Profit, margin and markup from cost and price.

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/hr

Salary to Hourly Calculator

Finance

Convert yearly, monthly or weekly pay to hourly.

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BMI

BMI Calculator

Health

Body mass index with a healthy-weight range.

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kcal

Calorie Calculator

Health

Daily calories to keep, lose or gain weight.

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40w

Pregnancy Due Date Calculator

Health

Estimated due date and week-by-week timeline.

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H₂O

Water Intake Calculator

Health

How much water to drink each day.

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GPA

GPA Calculator

Study

Semester GPA on a 4.0 scale.

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%

Percentage Calculator

Study

X% of Y, what percent, and percentage change.

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yrs

Age Calculator

Study

Exact age in years, months and days.

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x̄

Average Calculator

Study

Mean, median, mode and range of numbers.

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W

Word Counter

Text

Words, characters, sentences and reading time.

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Aa

Case Converter

Text

UPPER, lower, Title, sentence and code cases.

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{ }

JSON Formatter

Text

Format, validate and minify JSON.

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***

Password Generator

Text

Strong random passwords you can copy.

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