RUNWAY
CALCULATOR
Not cash ÷ burn. The real number, with everything you forgot.
Most founders are 25-40% off on their runway calculation. Health insurance, self-employment taxes, quarterly surprises—they add up.
5 minutes. Free. No credit card.
The calculation you've been avoiding
Here's What Most Founders Miss
The simple math
$100K ÷ $7K/month = 14 months
+$550
Health insurance
+$420
Tax reserve (15%)
+$400
Quarterly surprises
-$21K
Emergency buffer
The real runway
9 months
36% less than they thought
What You'll Get
In 5 minutes, get a complete picture of your financial runway:
Find What You Forgot
Health insurance, self-employment taxes, annual expenses, quarterly surprises—we catch them all.
Simple vs Real Gap
See exactly how far off your simple 'cash ÷ burn' calculation was. Most founders are 25-40% off.
Decision Timeline
Know exactly when your options start closing. Fundraising, pivoting, job hunting—each has a deadline.
George's Take
Personalized analysis of your situation with specific recommendations based on your numbers.
How It Works
Five screens to clarity:
Quick Setup
Country, situation, and who depends on your income. Sets smart defaults for everything else.
Your Numbers
Cash available, incoming funds, income (if any), and monthly expenses.
What You Forgot
Health insurance, taxes, annual expenses, quarterly surprises—we catch them all.
Your Limits
Emergency buffer, 'oh shit' number, and any hard deadlines (visa, lease, partner timeline).
Risk Profile
How accurate is your tracking? What's your risk tolerance? This adjusts everything.
Your Results Include
- Simple vs Real runway comparison— the gap will surprise you
- Itemized forgotten expenses— with exact amounts
- Decision timeline with dates— when options close
- Best/worst/bridge scenarios— plan for anything
- George's personalized take— specific to your situation
Why I Built This
“I had 14 months of runway. Except I didn't.”
I did the simple math: cash divided by monthly burn. 14 months. Plenty of time.
Then reality hit:
- Health insurance: $520/month I wasn't paying before
- Self-employment tax: 15% I never set aside
- Annual expenses I divided by... nothing
- The $4K "surprise" that hits every quarter
Real runway: 9 months.
I found out at month 6. By then, my options were already closing. This calculator exists so you find out now, while you can still plan.
George Pu
Founder, learned about runway the hard way
Frequently Asked Questions
Takes 5 minutes. Free forever. No login required to see your results.