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Bond Duration for a startup valuation

Simulate a startup valuation live in your browser. This runs the real Bond Duration solver — adjust the inputs, watch it respond instantly, and export the result. No install, no account.

Bond Duration & PriceLive

Controls

Presets

A bond's price moves opposite to yields, and duration measures how much. Modified duration approximates the percent price drop for a 1% rise in yield — longer maturities and lower coupons mean higher duration and bigger swings. Educational tool, not financial advice.

▶ Run in Python

Data Inspector

Bond price$1000.00
Macaulay duration8.11 yr
Modified duration7.72
≈ price change / +1% yield-7.72%

Governing equation

Reading this result: Coupon equals yield, so the bond prices right at par — yet its 7.7-year modified duration still exposes it to rate swings.

Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.

or unlock everything with Pro →

About this simulation

The full Bond Duration tool models a startup valuation with the same numerics engineers and scientists use — running entirely client-side. Change any parameter and the result updates in real time, so you can build intuition, check a design, or teach the concept without spreadsheets or installs.

More you can do with Bond Duration

Other ways to simulate a startup valuation

Frequently asked questions

How do I simulate a startup valuation?
Open this page and use the live Bond Duration tool below — set your inputs and the simulation runs instantly in your browser using real numerics. No install, no account needed.
Is it free?
Yes. The simulation runs free in your browser. A one-time unlock or a Pro plan adds advanced parameters, saved presets, data import, and clean exports.
Can I use my own numbers?
Absolutely — every input is adjustable, and with data import you can drive a startup valuation from your own measurements.