Free Everyday Tools
Practical everyday calculators for paint coverage, concrete and gravel volumes, electricity costs, wind chill, heat index, fuel cost, ABV, and more.
Choose a tool and get an instant result
BlinkCalc tools are designed to be fast, practical, privacy-conscious, and easy to understand. Every result is calculated in your browser.
Alcohol by Volume Calculator
Calculate the ABV percentage of any homebrew or mixed drink.
Bandwidth Calculator
Calculate download/upload times and data transfer rates.
Carbon Footprint Calculator
Estimate your annual carbon footprint from travel, home energy, and diet.
Concrete Calculator
Calculate how much concrete you need for slabs, columns, and footings.
Dew Point Calculator
Calculate the dew point temperature from air temperature and humidity.
Electricity Cost Calculator
Calculate how much any appliance costs to run per hour, day, or month.
Flooring Calculator
Calculate how many square feet of flooring you need for any room.
Fuel Cost Calculator
Estimate the fuel cost of any trip based on distance and fuel price.
Gravel Calculator
Calculate how much gravel, sand, or topsoil you need for any area.
Heat Index Calculator
Calculate the feels-like temperature from heat and humidity.
Ohm's Law Calculator
Solve voltage, current, resistance, and power using Ohm's Law.
Paint Calculator
Calculate how many gallons of paint you need to cover any room.
Recipe Scaler
Scale any recipe up or down by entering the number of servings.
Tile Calculator
Calculate how many tiles you need for any floor or wall area.
Typing Speed Test
Test your typing speed in WPM and accuracy with real text passages.
Wind Chill Calculator
Calculate the wind chill feels-like temperature from air temperature and wind speed.
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Health
Calculate BMI, calories, macros, heart rate zones, pregnancy dates, hydration, fitness metrics, body composition, and wellness estimates.
Converters
Convert length, weight, temperature, area, volume, speed, time, energy, data storage, and other common measurement units online.
Date & Time
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Developer Tools
Free online developer tools including JSON formatters, encoders, converters, validators, generators, regex testers, and debugging utilities. No signup, runs in your browser.
Frequently asked questions
What counts as an 'everyday' tool?
Practical calculators for things you do around the home or in daily life: paint and tile coverage, electricity costs, fuel cost, ABV, dew point, wind chill, carbon footprint, and recipe scaling.
Are the construction calculators accurate enough to buy materials from?
They give a reliable estimate with a recommended waste factor. For a final order you should still cross-check with your supplier or trade professional.
Do these tools work offline?
Once a tool page has loaded, the calculator itself runs entirely in the browser, so it continues to work without network connectivity.