Two divisions that locate you

What it is: Runway is what you could reach, divided by one month of essentials — the answer is in months. Coverage is money that arrives without you working, divided by essentials — the answer is a percentage.
Why it matters: These two have nothing to do with how much you earn. A surgeon on a large salary can have under a month of runway. A shopkeeper with rent coming in can be covered. Income is a flow; these measure whether anything has been built with it.
The method: Savings you could reach tomorrow, divided by essentials. Then unworked income, divided by essentials, times one hundred. Reachable is the important word — money locked in a term deposit is not reachable in an emergency.
Example: PKR 30,000 saved against PKR 55,000 of essentials is 0.5 months. Half a month. One dental appointment ends it.

Savings ÷ essentials gives months. Unworked income ÷ essentials gives a percentage.

Now you

What you could reach tomorrow, and what arrives without you working.