Calculators and Converters
Choose from a multitude of free calculators and converters in the areas of finance, health, cooking, math and science for everyday, general use.
Featured Conversions
- Grams to ounces
- Grams to pounds
- Kilos to stones & pounds
- Kilos to pounds
- Stones to pounds
- Centimeters to inches
- Centimeters to feet & inches
- Cubic yards to tons
- Inch-pounds to ft-lb
- Inches to centimeters
- Meters to feet & inches
- Millimeters to inches
- Newton-Meters to ft lb
- Ounces and pounds
- Square feet to cubic feet
- Square feet to cubic yards
Health and Math
- Age Calculator
- Birthday Calculator
- Chronological Age
- Cubic Feet Calculator
- Cubic Yards Calculator
- Date Calculator
- Days & Time Between Dates
- Days Until...
- Decimal to Fraction Calculator
- Density Calculator
- Fractions Calculators
- Hex to Decimal Converters
- LED Savings Calculator
- Mulch Calculator
- Percentage Calculator
- Percentage Change
- Roman Numerals Converter
- Significant Figures Calculator
- Square Footage Calculator
Unit Conversions
- Acceleration Converter
- Area Converter
- Cooking Converter
- Data Storage Converter
- Energy Converter
- Fuel Economy Calculator
- Height Converter
- Length and Distance Converter
- Mass & Weight Converter
- Power Converter
- Pressure Converter
- Time Converter
- Velocity Converter
- Volume Converter
- Water Weight Calculator
- Weight Converter
- Weight To Volume Converter
How Much Does a Gallon of Water Weigh?
A gallon of water weighs roughly 8lb, but the precise weight varies according to its level of density, which in turn depends on its storage temperature. Learn more about the weight of water - and try out our water weight calculator and reference chart - when you dip...
How Many Cubic Feet is my Refrigerator?
Measuring the space inside your refrigerator might not be your first choice of activity for a Saturday afternoon, but it has its purposes.Perhaps you're planning to buy a week of meal-prep kits described as fitting in an 18 cubic foot fridge, or you're moving house and need to check that your fridge...
Compound Interest Formula - Explained
An in-depth look at the compound interest formula as we break down how to calculate compound interest. The concept of compound interest is that interest is added back to the principal sum so that interest is earned on that added interest during the next compounding period.
Whether you're ordering clothes online, monitoring your weight, or designing a bespoke bucket chair for your space-shuttle to the moon (look, the world is on fire; it's OK to have a plan B), you need to be able to measure your body accurately. Here's how to get the digits for your waist.
Calculator suggestions
I love hearing your feedback. So, please feel free to suggest any calculators or converters that you feel would be a useful addition to this website. Or, if you have any ideas for extra features, then please suggest those also. You can contact me here.
