Free calculators for business owners and staff

Quick answers to the sums that come up every month. No sign-up, nothing to install.

The award for resignation, termination or contract end, with unused leave.

Add VAT to a price, or take it out of a total that already includes it.

Days earned, days left and what unused leave is worth.

Write any amount in Arabic words for a cheque or invoice.

See what missed bookings cost you a year, and what reminders could save.

Convert dates between the Hijri and Gregorian calendars, and find an exact age.

Work out zakat on your wealth at 2.5%, with the gold nisab.

Price a service from a target margin, or check the margin a price gives.