Free tool
How many months
does your cash buy?
Enter cash in the bank, monthly burn and expected revenue in your currency, and see your runway month by month and how far a raise extends it. Nothing you type leaves your browser.
A work email reserves $50 in credit.
$600,000
What you can spend today.
$60,000
Everything you spend in a month: salaries, rent, tools, marketing.
$15,000
What comes in each month now. Leave 0 before revenue.
Optional. Applied from month 2; 0 keeps revenue flat.
$1,000,000
Money you expect to raise, counted as arriving today.
Your cash lasts 13.3 months. A raise of $1,000,000 takes it to 35.6 months.
Month by month
| Month | Revenue | Net burn | Cash left | With the raise |
|---|---|---|---|---|
| Month 1 | $15,000 | $45,000 | $555,000 | $1,555,000 |
| Month 2 | $15,000 | $45,000 | $510,000 | $1,510,000 |
| Month 3 | $15,000 | $45,000 | $465,000 | $1,465,000 |
| Month 4 | $15,000 | $45,000 | $420,000 | $1,420,000 |
| Month 5 | $15,000 | $45,000 | $375,000 | $1,375,000 |
| Month 6 | $15,000 | $45,000 | $330,000 | $1,330,000 |
| Month 7 | $15,000 | $45,000 | $285,000 | $1,285,000 |
| Month 8 | $15,000 | $45,000 | $240,000 | $1,240,000 |
| Month 9 | $15,000 | $45,000 | $195,000 | $1,195,000 |
| Month 10 | $15,000 | $45,000 | $150,000 | $1,150,000 |
| Month 11 | $15,000 | $45,000 | $105,000 | $1,105,000 |
| Month 12 | $15,000 | $45,000 | $60,000 | $1,060,000 |
| Month 13 | $15,000 | $45,000 | $15,000 | $1,015,000 |
| Month 14 | $15,000 | $45,000 | Out of cash | $970,000 |
| Month 15 | $15,000 | $45,000 | Out of cash | $925,000 |
| Month 16 | $15,000 | $45,000 | Out of cash | $880,000 |
| Month 17 | $15,000 | $45,000 | Out of cash | $835,000 |
| Month 18 | $15,000 | $45,000 | Out of cash | $790,000 |
| Month 19 | $15,000 | $45,000 | Out of cash | $745,000 |
| Month 20 | $15,000 | $45,000 | Out of cash | $700,000 |
| Month 21 | $15,000 | $45,000 | Out of cash | $655,000 |
| Month 22 | $15,000 | $45,000 | Out of cash | $610,000 |
| Month 23 | $15,000 | $45,000 | Out of cash | $565,000 |
| Month 24 | $15,000 | $45,000 | Out of cash | $520,000 |
| Month 25 | $15,000 | $45,000 | Out of cash | $475,000 |
| Month 26 | $15,000 | $45,000 | Out of cash | $430,000 |
| Month 27 | $15,000 | $45,000 | Out of cash | $385,000 |
| Month 28 | $15,000 | $45,000 | Out of cash | $340,000 |
| Month 29 | $15,000 | $45,000 | Out of cash | $295,000 |
| Month 30 | $15,000 | $45,000 | Out of cash | $250,000 |
| Month 31 | $15,000 | $45,000 | Out of cash | $205,000 |
| Month 32 | $15,000 | $45,000 | Out of cash | $160,000 |
| Month 33 | $15,000 | $45,000 | Out of cash | $115,000 |
| Month 34 | $15,000 | $45,000 | Out of cash | $70,000 |
| Month 35 | $15,000 | $45,000 | Out of cash | $25,000 |
| Month 36 | $15,000 | $45,000 | Out of cash | Out of cash |
Showing the first 36 months.
Everything runs in your browser; nothing you type is stored or sent anywhere.
Stretch the months
Ishara keeps this beside your investor pipeline, with 40,000+ investors and funds ranked against your round and 400+ startup perks to shortlist; each partner sets its own eligibility.
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The runway maths
Runway is the number of months your cash covers the gap between what you spend and what comes in:
- Net burn = monthly burn minus monthly revenue
- Runway = cash in the bank ÷ net burn
- Months a raise adds = the raise ÷ net burn
For example, $600,000 in the bank against a $60,000 burn and $15,000 of revenue is a net burn of $45,000, which lasts 13.3 months. When you add monthly growth, revenue rises each month and the calculator counts the months one by one instead, so the net burn shrinks as you go.
Reading the answer
Most investors expect a round to take months from the first meeting to money in the bank, so plan the raise while the runway still has room. The table shows the month the cash runs out under today's plan and with the raise beside it. If revenue overtakes the burn, the calculator says so instead of counting down.
Then stretch it
Runway grows two ways: more cash or a lower burn. The Startup hub keeps both in view, with investors ranked against your round, 1,200+ ways to apply with a tracker and perks that lower what you spend. Work out what a SAFE costs you in ownership with the SAFE and dilution calculator.
Frequently asked questions
How is runway calculated?
Divide the cash in the bank by your net burn, which is your monthly burn minus your monthly revenue. With revenue growth switched on, the calculator counts month by month, because the net burn shrinks as revenue grows.
What counts as burn?
Everything that leaves the bank in a month: salaries, rent, tools, marketing and any loan repayments. Use gross spend, and put what comes in under revenue.
How far does a raise extend my runway?
At flat revenue, by the raise divided by your net burn. The calculator counts the raise as arriving today, so plan the round early enough for the money to land before your own runway ends.
What if revenue already covers my burn?
Then your cash does not run out at these numbers, and the calculator says so instead of counting down.
Which currencies does it use?
SAR, AED, QAR and USD. Switching converts your figures at the dollar pegs (3.75 SAR, 3.6725 AED, 3.64 QAR), so the months never change with the currency.
Does the runway calculator store or send what I type?
No. The arithmetic runs in your browser. Nothing you enter is stored, sent or logged.
Keep exploring
Where to go next.
SAFE and dilution calculator
What a post-money SAFE costs you in ownership, in SAR, AED, QAR or USD.
Startup hub
Investors, ways to apply, perks and a founder toolkit, for the whole raise.
For founders
Investors who fit your round, ways to apply and perks, in one place.
Early-access pricing
Free, Pro and Business per seat. Enterprise is scoped with the team.
Know your months. Then extend them.
Ishara ranks 40,000+ investors and funds against your raise and keeps 400+ startup perks beside the pipeline. Each partner sets its own eligibility.
Invite-only early access in waves · A work email reserves $50 in credit · Arabic and English