Everyday Calculators
Practical tools for daily life — no maths degree needed. Calculate your exact age, find how many days between two dates, split a restaurant bill, work out fuel costs for a road trip, or count words in an essay. Quick answers for the small calculations that come up every day.
Most popular
Age Calculator
Calculate your exact age in years, months, and days. Find the time between any two dates.
Date Calculator
Add or subtract days, weeks, or months from any date. Find the difference between two dates.
Tip Calculator
Calculate the tip amount and total bill. Split the bill evenly between any number of people.
Discount Calculator
Calculate the sale price after a percentage discount. See how much you save on any purchase.
Unit Converter
Convert length, weight, temperature, volume, and speed between common metric and imperial units instantly.
Fuel Cost Calculator
Calculate the fuel needed and total cost for any UK journey based on distance, MPG or L/100km, and current pump prices for petrol, diesel or EV charging.
Reading Time Calculator
Estimate how long it takes to read or speak any text based on word count and average reading or speaking speed.
Grade Calculator
Calculate your weighted average grade across multiple assignments, convert to letter grade and GPA on a 4.0 scale.
Pace Calculator
Calculate your running or walking pace, speed, and projected finish times for any distance including 5K, 10K, half marathon, and marathon.
Time Calculator
Add or subtract hours, minutes, and seconds, or find the exact duration between two times of day.
GPA Calculator
Calculate your semester and cumulative GPA on a 4.0 scale by entering courses, grades, and credit hours.
Paint Calculator
Calculate how much emulsion you need for any UK room. Accounts for Dulux, Crown and Farrow & Ball coverage rates, doors, windows, and the right mix of 2.5L, 5L and 10L tins.
Frequently Asked Questions
Are these calculators free to use?
Yes, 100% free with no limits. Use them as many times as you need — there's no cap on calculations and no sign-up required.
Do they work on mobile?
Yes. Every calculator is fully responsive and works on phones, tablets, and desktops. The interface adjusts to your screen size automatically.
Can I save my results?
Yes. Each calculator saves your recent calculations locally in your browser. You can also copy or share any result using the buttons that appear after calculating.
What Can You Calculate?
The Age Calculator calculate your exact age in years, months, and days. Find the time between any two dates.
The Date Calculator add or subtract days, weeks, or months from any date. Find the difference between two dates.
The Tip Calculator calculate the tip amount and total bill. Split the bill evenly between any number of people.
The Discount Calculator calculate the sale price after a percentage discount. See how much you save on any purchase.
The Unit Converter convert length, weight, temperature, volume, and speed between common metric and imperial units instantly.
The Fuel Cost Calculator calculate the fuel needed and total cost for any UK journey based on distance, MPG or L/100km, and current pump prices for petrol, diesel or EV charging.
The Reading Time Calculator estimate how long it takes to read or speak any text based on word count and average reading or speaking speed.
The Grade Calculator calculate your weighted average grade across multiple assignments, convert to letter grade and GPA on a 4.0 scale.
The Pace Calculator calculate your running or walking pace, speed, and projected finish times for any distance including 5K, 10K, half marathon, and marathon.
The Time Calculator add or subtract hours, minutes, and seconds, or find the exact duration between two times of day.
The GPA Calculator calculate your semester and cumulative GPA on a 4.0 scale by entering courses, grades, and credit hours.
The Paint Calculator calculate how much emulsion you need for any UK room. Accounts for Dulux, Crown and Farrow & Ball coverage rates, doors, windows, and the right mix of 2.5L, 5L and 10L tins.
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