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Allset Lab

Calculators

Discounts, tips, loans, and dates

Use a keypad for everyday arithmetic, or work out a sale price, a loan payment, GST, or a date.

No signup. The numbers stay in your browser and are not sent to a server.

Choose a tool
  • No signup
  • Free to use
  • Works in your browser
  • Nothing is uploaded

Start now

Choose a tool and start.

Each calculator opens instantly. Enter the numbers and read the result.

Calculator Add, subtract, multiply, and divide, with powers, roots, logs, and trigonometry. Open calculator Discount See the amount saved and the price after a percent off. Calculate discount Tip and split Add a tip, then divide the total by the number of people. Split a tip Loan Find the monthly payment from an amount, a yearly rate, and a term. Calculate payment GST Add GST to a price, or remove it from a tax-inclusive total. Calculate GST Age Count years, months, and days from a date of birth. Calculate age Date difference Count the days between two dates and read the ISO week. Compare dates Markup Turn a cost and a markup or margin into a selling price. Find the price Compound interest See a balance after yearly interest, with an optional monthly amount. Calculate interest Hourly wage Turn a yearly salary into an hourly rate. Find the hourly rate Add days Add or subtract a number of days from a date. Find the date

How it works

Three quick steps from open to result.

  1. Choose a calculator

    Open a discount, markup, loan, interest, wage, or date tool.

  2. Enter the numbers

    Type a price, a rate, or a date. Nothing is sent to a server.

  3. Read the result

    Copy the price, the share, the payment, or the day count.

Why use the calculators

Concrete reasons people open these tools and finish the job in one visit.

Fast

The result is ready as soon as you click, with no waiting on a server.

Private

Prices, dates, and loan figures stay in the browser tab.

Free

No account and no limit on how often you calculate.

Plain

Each answer is a figure plus one sentence you can copy.

Frequently asked questions

Are the calculators free?

Yes. The scientific calculator, discount, markup, interest, wage, GST, and date calculations are free and do not require an account.

Are the numbers uploaded?

No. Every calculation runs in your browser.

How is a loan payment calculated?

It uses the standard monthly payment for a fixed rate. A rate of zero divides the amount by the number of months.

Which GST rate should I use?

The field starts at 18%. Change it when the rate for that price is different.