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40 free tools

All calculators & tools

Find a calculator or utility for the question you need to answer.

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Search by name or topic, or filter the complete catalogue by Money, Everyday and Technology. All tools run in your browser with no account required.

Showing all 40 tools

⌂

Mortgage Calculator

Repayments, interest, payoff time and extra repayments.

Money
+

Extra Mortgage Repayment

See how extra repayments can save interest and time.

Money
$

Personal Loan Calculator

Estimate repayments, total interest and loan burndown.

Money
◈

Car Loan Calculator

Vehicle finance with deposit, fees and balloon payment.

Money
↗

Compound Interest Calculator

Project long-term growth and regular contributions.

Money
◎

Savings Goal Calculator

Work backwards from a savings target and timeframe.

Money
%

Investment Return Calculator

Calculate profit, ROI and annualized return.

Money
%

Percentage Calculator

Three clear calculators for common percentage questions.

Everyday
−

Discount Calculator

Sale price, amount saved and optional tax.

Everyday
▦

Subnet / CIDR Calculator

IPv4 networks, masks, host ranges and address counts.

Technology
◷

Age Calculator

Exact age, elapsed days and next birthday.

Everyday
▣

Date Difference Calculator

Days, weeks, weekdays and weekends between dates.

Everyday
⇄

Unit Converter

Length, mass, temperature, area, volume and speed.

Everyday
◉

Fuel Economy Calculator

Convert L/100 km, km/L and MPG.

Everyday
⚡

Electricity Cost Calculator

Estimate appliance energy use and running cost.

Everyday
$

Salary to Hourly Calculator

Convert annual salary and hourly pay.

Money
↗

Margin & Markup Calculator

Gross profit, margin and markup from cost and price.

Money
▭

Aspect Ratio Calculator

Resize image and video dimensions proportionally.

Everyday
✦

Password Generator

Generate strong random passwords locally.

Technology
{}

JSON Formatter & Validator

Format, minify and validate JSON locally.

Technology
◷

Time Calculator

Add or subtract time, or find the duration between two times.

Everyday
▣

Business Days Calculator

Count weekdays and weekends between two dates.

Everyday
%

Tip Calculator

Calculate a tip, total bill and amount per person.

Everyday
+

Sales Tax Calculator

Add or remove a configurable sales tax, VAT or GST rate.

Money
$

Loan Payoff Calculator

Estimate payoff time and remaining interest from your current balance and payment.

Money
◎

Break-Even Calculator

Find the sales volume and revenue needed to cover fixed and variable costs.

Money
▤

Data Storage Converter

Convert bytes, decimal storage units and binary IEC units.

Technology
↓

Download Time Calculator

Estimate download time from file size and connection speed.

Technology
IP

IP Address Converter

Convert an IPv4 address between dotted decimal, binary, hexadecimal and integer.

Technology
#

Random Number Generator

Generate random integers or decimals with configurable ranges.

Technology
◷

Unix Timestamp Converter

Convert Unix time and readable dates.

Technology
ID

UUID Generator

Generate secure random UUID v4 identifiers.

Technology
64

Base64 Encoder / Decoder

Encode and decode UTF-8 text locally.

Technology
#

Hash Generator

Generate SHA-256, SHA-384 and SHA-512 hashes.

Technology
◉

Color Converter

Convert HEX, RGB and HSL colours.

Technology
▦

Screen DPI / PPI Calculator

Calculate display pixel density and pixel pitch.

Technology
◷

Time Zone Converter

Convert dates and times between time zones.

Everyday
A+

GPA Calculator

Calculate weighted GPA with configurable grade points.

Everyday
↗

Pace Calculator

Calculate pace, speed and equivalent times.

Everyday
⚡

Calories Burned Calculator

Estimate activity energy expenditure.

Everyday
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