Finance / CALCULATOR

Defensive Interval

Defensive Interval: a supplied-input model with explicit assumptions and a worked example.

Runs on your deviceUpdates as you typeFormula & example ↓
01

Your inputs

Adjust the values to explore a different result.

Enter cash and marketable investments.
Enter net collectible receivables.
Enter daily cash operating expense.

Formula

days=(cash+marketable investments+receivables)/daily cash expense.
  • Use the units shown beside each field.
  • Results update automatically whenever you change an input.
  • Displayed values use up to four decimal places, or scientific notation for very small or large numbers. Calculations use standard floating-point arithmetic; exact integer and fraction tools identify their own precision rules.
  • Excludes inventory and assumes receivables can support expenses. No collection timing or future receipts modeled.

Example Calculation

Example inputs
  • Cash and marketable investments: 600
  • Net collectible receivables: 300
  • Daily cash operating expense: 30

Cash and marketable investments = 600; Net collectible receivables = 300; Daily cash operating expense = 30. The primary result is 30.

Frequently asked questions

How do I use this calculator?

Enter cash and marketable investments, net collectible receivables, daily cash operating expense. The result updates automatically. Use Reset to restore the example values.

What method does it use?

days=(cash+marketable investments+receivables)/daily cash expense.. Excludes inventory and assumes receivables can support expenses. No collection timing or future receipts modeled.

Why might a rounded result differ?

The calculation keeps full numeric precision internally, then rounds the displayed result. Rounding intermediate steps by hand can produce a slightly different answer.

Are my inputs saved online?

No. This calculator processes your inputs in your browser. A recently used list stores only calculator names on this device, not your entered values.

Check the assumptions and units before using this result. Read about calculation methods.