Calculators

Calculators tools — 14 free browser utilities

Money, dates, percentages and everyday maths. Everything runs locally: your files are never uploaded.

Monthly instalment, total interest and total cost.

Estimate your monthly mortgage payment.

See how savings grow over time.

Percentages answered instantly.

Know your margin before you price.

Add or extract VAT fast.

Final price after the sale.

Work out percent increase or decrease.

Mean, median, min and max fast.

Simplify ratios and split totals.

Age in years, months and days.

Days between dates, exact.

Body Mass Index calculator

Grade Point Average calculator

Calculators tools — quick answers

Are the calculators tools free?

Yes — free and unlimited, with no account required.

Do they work offline?

Once a page has loaded, the tool keeps working even without a connection.

Can I use the output commercially?

Yes. There is no watermark and no attribution requirement on files you create.