15 free tools · Everyday Calculators
Free online
Everyday Calculators.
Quick, private calculators for everyday maths: percentages, percentage change, discounts and sale prices, time and date differences. Answers as you type, with the working shown and nothing sent to a server.
Browse 15 toolsEveryday Calculators
15 tools · Free to use
Percentage Calculator
Free percentage calculator: find X% of Y, what percent X is of Y, percentage change, increase or decrease, and the whole from a part. Instant answers with steps and Excel formulas.
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Percentage Increase Calculator
Calculate the percentage increase from one number to another, increase a number by a percentage, or find the value before an increase. Instant answers with steps and formulas.
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Percentage Decrease Calculator
Find the percentage decrease between two numbers, reduce a number by a percentage, or work out the value before a decrease. Free, instant, with steps and formulas.
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Percentage Change Calculator
Calculate the percentage change between an old and a new value, with the sign, the difference and the working shown. Includes percent vs percentage points and an Excel formula.
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Percentage Difference Calculator
Find the percentage difference between two numbers using the average as the reference. See the working, the formula for Excel, and when to use percent change instead.
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Discount Calculator
Calculate the sale price and savings for any percent off, stack an extra discount, add sales tax, find the percent off between two prices or the original price. Free and instant.
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Date Calculator
Add or subtract days, weeks, months or years from any date, count business days only, or find the time between two dates. Free, instant, with the weekday shown.
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Days Between Dates Calculator
Count the days between two dates, or days until a date, with the result in years, months, weeks, hours and weekdays. Include the end date if you need to. Free and instant.
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Business Days Calculator
Count business days between two dates, skipping weekends and US federal or UK bank holidays, plus your own days off. See every holiday skipped. Free and instant.
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Age Calculator
Calculate your exact age in years, months and days from your date of birth, your age on any date, total days lived and the countdown to your next birthday. Private and free.
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Time Calculator
Add and subtract hours and minutes, total up a list of times, or add a duration to a clock time. Results in h:mm, decimal hours and minutes. Free and instant.
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Hours Calculator
Calculate the hours and minutes between two times, subtract a break, handle overnight shifts and get decimal hours and pay. Free, instant and private.
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Time Card Calculator
Free weekly time card calculator: enter clock-in and clock-out times with breaks, handle overnight shifts, calculate overtime and pay, round times and export CSV. No sign-up.
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Military Time Converter
Convert military time to standard time and back instantly: 1730 = 5:30 PM. Full military time chart, how to say it, and the current time in military format.
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Square Footage Calculator
Calculate square footage for rooms, floors, lawns and lots. Add several rectangles, circles and triangles, subtract cut-outs, and convert to m², sq yd and acres. Free.
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A quick guide
Choosing the right Everyday Calculators
Everyday calculators should answer a question in seconds, show how they got there, and not need an account. Every calculator here updates as you type, explains the steps in plain English, and gives you a formula you can paste into Excel or Google Sheets.
All calculations run in your browser, so the numbers you enter, such as prices, salaries and dates, stay on your device.
Digital ToolPad brings together 15 free Everyday Calculators in one collection. Open a tool, add your input, and review the result on your device. All tool processing happens in your browser, without uploading your data to our servers for processing.
Are these calculators free?
Yes. There is no sign-up, no usage limit and no premium tier. Every calculator works immediately in your browser.
Can I see how the answer was calculated?
Yes. Each result has a plain-English sentence and a “Show working” section with the steps and a matching Excel or Google Sheets formula.
Is anything I type stored or sent anywhere?
No. Calculations happen on your device. The numbers you enter are not sent to a server or saved.
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