40 calculators

We proudly present the collection of the most unique, crazy, knock-your-socks-off calculators on the Web! Here, you can discover Omni Calculator in its full glory, and get the full perspective on what we do and why. Trying to relax? Grab a sweet tea prepared with our chilled drink calculator, or lift up in the air on helium balloons. Hungry? We have the best cooking calculators, from boiling eggs to getting pizza. In a more serious mood? Check how dangerous a car crash can be depending on different factors, or how many years of life you can save by picking a bike over a car. Feeling like starting a DIY project? We suggest sewing a circle skirt. Weโre here to do the math for you, so dive in and enjoy!

Test Grade Calculator

With this test grade calculator, you'll quickly determine the test percentage score and grade.

Discount Calculator

The discount calculator uses a product's original price and discount percentage to find the final price and the amount you save.

Circumference Calculator

Use this free circumference calculator to find the area, circumference and diameter of a circle.

Significant Figures Calculator โ Sig Fig

The significant figures calculator performs operations on sig figs and shows you a step-by-step solution!

Steps to Calories Calculator

Steps to calories calculator helps you to estimate the total amount to calories burned while walking.

Harris-Benedict Calculator (Basal Metabolic Rate)

Harris-Benedict calculator uses one of the three most popular BMR formulas. Knowing your BMR (basal metabolic weight) may help you make important decisions about your diet and lifestyle.

Free Fall Calculator

Our free fall calculator can find the velocity of a falling object and the height it drops from.

Body Fat Calculator

Use our free Body Fat Calculator, based on BMI, to determine your body fat percentage and explore your ideal body fat range.

Korean Age Calculator

If you're wondering what would your age be from a Korean perspective, use this Korean age calculator to find out.

Grams to Cups Converter

The grams to cups converter converts between cups and grams. You can choose between 20 different popular kitchen ingredients or directly type in the product density.

Sunbathing Calculator

Do you always remember to put on sunscreen before going outside? Are you sure that you use enough? The Sunbathing Calculator โ will tell you when's the time to go back under an umbrella not to suffer from a sunburn!

Sleep Calculator

The sleep calculator can help you determine when you should go to bed to wake up happy and refreshed.

Circle Skirt Calculator

Circle skirt calculator makes sewing circle skirts a breeze.

Car Crash Calculator

With this car crash calculator, you can find out how dangerous car crashes are.

Plant Spacing Calculator

Optimize your garden layout with our garden spacing calculator. Perfect for precise plant spacing. Plan your dream garden effortlessly now!