Other Calculators

23 free everyday & fun calculators — gravel, mulch, BTU sizing, love, countdown, dog & cat age, zodiac, numerology, pizza, fuel cost, square footage, GPA, tip & more. Looking for time tools? See our Time & Date Calculators. Fast and completely free.

Gravel Calculator

Cubic yards, tons & cost of gravel for driveways, paths and drainage — by area and depth.

LandscapingTons

Mulch Calculator

Cubic yards and bags of mulch for your beds — plus bulk vs bagged cost comparison.

Right-size your AC or heater — BTUs by room size, insulation, sun exposure & climate.

Calculate your GPA on the 4.0 scale for any number of courses.

Bill split and tip amount per person — for any party size and tip percentage.

RestaurantSplit

Carbon Footprint

Annual CO₂ emissions from transport, home energy & diet — vs. US & world averages.

Fuel Cost Calculator

Gas cost for any trip or commute — MPG, gas price, monthly & annual cost.

Square Footage Calculator

Room & house area, paint gallons, flooring cost — rectangle, circle & L-shape.

Concrete Calculator

Cubic yards & bags needed for slabs, patios, driveways, footings & columns.

DIYConstruction

Love Calculator

A fun name-compatibility love test with an animated heart meter — just for fun.

Countdown Calculator

Live countdown timer to any date — days, hours, minutes & seconds until birthdays, holidays & events.

TimerDays Until

Dog Age Calculator

Convert your dog's age to human years with the modern size-based vet formula.

Cat Age Calculator

Find your cat's age in human years with the vet-recognised feline aging model.

Zodiac Sign Calculator

Find your star sign, element and personality traits from your birthday.

Discover your Chinese zodiac animal and element from your birth date.

Life Path Number

Free numerology reading — calculate your life path number and its meaning.

Generation Calculator

Gen Z, Millennial, Gen X or Boomer? Find your generation from your birth year.

Pizza Calculator

How many pizzas to order for your party — by guests, appetite and size.

Tariff Cost Calculator

How much a tariff adds to the price of imported goods — duty & new price.

EV vs Gas Calculator

Fuel savings of going electric — annual and 5-year cost vs a gas car.

Solar Panel Payback

When solar pays for itself and your 25-year net savings after the tax credit.

AI Token Cost Calculator

Estimate LLM API cost from input/output tokens — per request and per month.

Cost of Living Calculator

The gross salary you need to live comfortably, cover costs, save & pay taxes.