Time & Date Calculators

Calculate working time, important dates and everyday time-related values with simple tools designed to give you clear answers quickly.

CalcAtlas time and date calculators cover tasks such as calculating time card hours and working out invoice due dates from payment terms.

Time & Date Calculators

Time Card Calculator

Calculate hours worked from start and end times, including unpaid breaks and one-week or two-week time cards.

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Invoice Due Date Calculator

Calculate an invoice due date from the invoice date and payment terms, including calendar days, business days and weekend adjustments.

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About Time & Date Calculators

Time and date calculations appear in many everyday situations, from recording hours worked to determining when a payment is due.

CalcAtlas tools are designed to make these calculations easier by showing the information used and presenting the result clearly.

Time, employment and payment practices can vary between workplaces, businesses and countries. Where a calculation depends on a particular policy or payment term, enter the values that apply to your own situation.

Time & Date Calculators