All Momentix Tools

Ages, gaps between dates, working days and shift hours.

Dates look simple until a leap year, a weekend or a night shift gets in the way. These calculators do the counting for you and show the working, so you can trust the answer on a form, a contract or a timesheet.

Find your exact age in years, months and days, count business days between two dates with your own weekend pattern and holidays, measure the gap between any two dates, or add up shift hours with unpaid breaks. Everything runs in your browser and nothing you enter is stored.

Increases, discounts, reverse maths and pack comparisons.

Percentages are everywhere: price rises, sale tags, VAT, pay rises and pack sizes. These calculators cover the questions people actually ask, from how much something changed to what the price was before a discount.

Work out a percentage increase or decrease, go backwards from a final price to the original, stack several discounts and a coupon, or compare packs of different sizes to find the cheapest per unit. Each result shows the formula and the steps.

Margins, break-even points and rates that cover your goals.

Good pricing and pay decisions start with the right numbers. These calculators help small business owners, sellers and freelancers see their real margin, know when a product breaks even and set a rate that covers costs.

Check profit after product cost, shipping and marketplace fees, find the units you must sell to break even, turn an income goal into an hourly rate, convert hourly pay to an annual salary, and add up overtime at time-and-a-half or double time.

Grow savings, project interest and pay debt off sooner.

Whether you are saving for a goal, paying off a loan or buying a home, a few numbers decide the outcome: how much, how often and at what rate. These calculators turn those inputs into a clear plan.

See when monthly deposits will reach a savings goal, watch compound interest grow year by year, compare a loan with and without extra payments to see the interest saved, and estimate a mortgage payment from price, deposit, rate and term.

UK take-home pay and VAT worked out with current official rates.

UK pay and prices come with rules that are easy to get wrong by hand. These calculators use the published rates and show every deduction, so you can see where the money goes.

Turn a gross salary into take-home pay after income tax, National Insurance, pension contributions and student loan for the 2026/27 tax year, and add or remove VAT at the standard, reduced or zero rate. Results are estimates, so check important figures with HMRC or a qualified adviser.

Tips, bill splitting and body mass index in seconds.

Small calculations come up every day: splitting a restaurant bill fairly or checking body mass index. These tools give a quick, clear answer without a spreadsheet.

Add a tip, share the total between any number of people and round up per person, or enter height and weight in metric or imperial units to see your BMI, weight category and healthy weight range for your height. BMI is a screening tool, not a diagnosis.

A quiz that tests your maths and science, a grade planner for your next exam, and your Big Three astrology signs.

Make images lighter or exactly the size you need.

Large photos slow down websites and fill up inboxes. These tools shrink or resize images right in your browser, so your files never leave your device.

Compress JPG, PNG and WebP images in bulk with a quality slider or a target file size, or resize by exact pixels or percentage while keeping the aspect ratio. Download each result on its own or all together as a ZIP.

Switch between JPG, PNG and WebP in one click.

Different apps and websites accept different image formats. These converters switch between JPG, PNG and WebP in one click, and the general image converter can also save AVIF where your browser supports it.

Drag in several files at once, choose the quality and download them one by one or as a ZIP. Transparent areas are kept for PNG and WebP, and filled with a colour you pick when saving as JPG.

Create QR codes and read them from any image.

QR codes connect print and phones. Use the generator to turn a link, text, Wi-Fi network, email or phone number into a code you can download as PNG, JPG or SVG, with your own colours and size.

Use the reader to decode a QR code from a picture, a pasted screenshot or your camera and copy the text or open the link. The codes you create contain the data itself, so they never expire and nothing is tracked.

Invoices, notes images and Google Fonts.

Make professional documents without installing anything. The invoice generator offers ten templates, custom colours, logo upload, tax, discounts and paid or unpaid status, and downloads a PDF or PNG.

The notes maker turns long text into notebook, sticky-note or blackboard pages you can save as PNG or PDF, and the font preview tool lets you try Google Fonts with your own text, size and colours and copy the CSS.