Category Page

🎂

Age Calculator

Exact age in years, months, days, plus your next birthday.

Time & Date

📐

Area Conversion Calculator

Convert m², ft², acres, hectares, and more.

Converter

🛣️

Asphalt Calculator

Estimate asphalt tons by project area and thickness.

Construction

⚖️

BMI Calculator

Body Mass Index and weight category by height & weight.

Health

🔥

BMR Calculator

Basal Metabolic Rate via Mifflin, Harris-Benedict, Katch.

Health

📏

Body Fat Calculator

Estimate body fat % using several supported methods.

Health

🥗

Calorie Calculator

Daily calorie needs based on BMR and activity level.

Health

🧱

Concrete Calculator

Concrete volume, bag counts, and helpful mix guidance.

Construction

💱

Currency Calculator

Convert currencies using live exchange rates.

Finance • Converter

⏳

Countdown Timer

Start a countdown to any date or time with alerts.

Time & Date

📅

Date Calculator

Add or subtract days and find days between two dates.

Time & Date

🎲

Dice Roller

Roll virtual dice (d4–d20) with totals and history.

Fun

🧮

Fraction Calculator

Add, subtract, multiply, divide, and reduce fractions.

Math

📚

Grade Calculator

Compute course averages and what you need on the final.

Education

📐

Greatest Common Factor (GCF)

Find the largest integer dividing two or more numbers.

Math

🎯

Ideal Weight Calculator

Healthy weight ranges based on height (common formulas).

Health

📏

Length Conversion Calculator

Switch between metric and imperial length units.

Converter

💳

Loan Calculator

Monthly payment, total interest, and full amortization.

Finance

❤️‍🔥

Love Calculator

Name-based compatibility calculator for fun only.

Fun

🏠

Mortgage Calculator

Home loan payments with interest and term breakdown.

Finance

🔐

Random Password Generator

Create strong passwords with custom length and rules.

Utilities

➗

Percentage Calculator

Find percentages, percentage change, and part/whole.

Math

📏

Rafter Calculator

Rafter length, pitch, and spacing for roof projects.

Construction

🧵

Rebar Calculator

Estimate bar spacing, counts, and total rebar length.

Construction

🔢

Random Number Generator

Generate random numbers in any custom range.

Fun • Utilities

🧓

Retirement Calculator

Project retirement savings, contributions, and timeline.

Finance

🏚️

Roofing Calculator

Shingle bundles, roof squares, and surface area.

Construction

💼

Salary Calculator

Estimate net pay from gross salary and deductions.

Finance

🧠

Scientific Calculator

Full scientific calculator with trig, logs, and memory.

Math

🚀

Speed Conversion Calculator

Convert between km/h, mph, m/s, and knots.

Converter

🏠

Square Footage Calculator

Area for rooms and projects in ft² or m².

Construction

📊

Standard Deviation Calculator

Compute population/sample SD, variance, and mean.

Math

⏰

Stock Exchange Time Calculator

Check global market open/close times and overlaps.

Finance

🌡️

Temperature Conversion Calculator

Convert °C, °F, and K with explanations.

Converter

🧩

Tile Calculator

Tile quantity and waste allowance by area.

Construction

🕘

Time Card Calculator

Weekly hours with breaks and overtime estimate.

Time & Date

⏱️

Time Duration Calculator

Compute precise time differences between timestamps.

Time & Date

🌍

Time Zone Calculator

Convert times across world time zones with DST awareness.

Time & Date • Converter

💁

Tip Calculator

Calculate tips and split the bill between people.

Utilities

🔺

Triangle Calculator

Solve sides, angles, area, and perimeter with steps.

Math

❤️

Target Heart Rate Calculator

Training zones from resting and max heart rate estimates.

Health

🧪

Volume Conversion Calculator

Common kitchen and engineering volume units.

Converter

🏋️

Weight Conversion Calculator

Quickly convert kg, lb, oz, stone, and more.

Converter

🪙

Coin Flip Simulator

Flip a fair coin with history and stats.

Fun

🔹 Popular Tools

💳

Loan Calculator

Monthly payment, total interest & amortization.

Finance

🏠

Mortgage Calculator

Home loan payments with taxes/insurance options.

Finance

💹

Compound Interest

Growth projections with daily, monthly, or yearly compounding.

Finance

💱

Currency Calculator

Live FX conversion across major currencies.

Converter

🚀

Speed Conversion

Convert km/h, mph, m/s, and knots instantly.

Converter

🌍

Time Zone Calculator

Compare times worldwide with DST awareness.

Time & Date

🎂

Age Calculator

Exact age in years, months, days—plus next birthday.

Time & Date

⚖️

BMI Calculator

Body Mass Index and weight category.

Health

📚

Grade Calculator

Weighted/overall average & final exam target.

Education

🧱

Concrete Calculator

Volume, bag counts, and mix guidance for slabs.

Construction

New

🔐

Password Generator

Create strong passwords with custom options.

Utilities

🔢

Random Number Generator

Generate numbers within any range.

Fun • Utilities

🔹 New & Recently Updated

Password Generator New — create strong passwords with custom length & rules.
Love Calculator New — fun name-based compatibility (for entertainment).
Grade Calculator New — weighted averages & “what do I need on the final?”.
Stock Exchange Time — global market open/close times & overlaps.
Roofing Calculator — shingle bundles, squares, and pitch coverage.
Tile Calculator — tile quantity with waste & grout spacing options.
Asphalt Calculator — driveway/lot tonnage by area & depth.
Concrete Calculator — slab volume, bag counts, and mix guidance.
Speed Conversion — km/h, mph, m/s, knots with instant results.
Weight Conversion — fast kg, lb, oz, stone conversions.

All Calculators (A–Z)

🔹 Popular Tools

🔹 New & Recently Updated