Seed Funding Calculator
Size your pre-seed, seed, or Series A round from burn, runway, and a reserve buffer.
Inputs
$
net cash spent per month
how long the round should keep you running
extra buffer on top of runway
Results
Amount to raise
$1,296,000.00
burn × runway × (1 + reserve)
Monthly burn
$60,000.00
echo of the input
Runway at raise
22
months of runway the raise buys at current burn
About this tool
Tell the calculator your monthly burn, target runway, and reserve percentage to get the amount to raise. The formula is burn × target runway × (1 + reserve).
How to use
- 1Pick the round you are planning — Pre-seed, Seed, or Series A — in the Round selector.
- 2Enter your current monthly burn.
- 3Set the target runway (6–36 months) and the reserve buffer percentage you want on top of it.
- 4Read the amount to raise, the echoed monthly burn, and the runway the raise actually buys at current burn.
Frequently asked questions
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