Understanding basis points and currency conversion
A basis point (bp, or "bps" in the plural) is one hundredth of a percentage point: 1 bp = 0.01% = 0.0001. Finance professionals use basis points because percentages of percentages are ambiguous. If a yield "rises 1%", that could mean it moved from 5.00% to 5.05% (a 1% relative increase) or from 5.00% to 6.00% (a one-percentage-point increase). Saying it rose "100 basis points" removes all doubt — it always means an absolute move of exactly one percentage point.
Where basis points are used
Basis points appear across fixed income, lending, and asset management. Central banks announce policy moves in basis points — a typical Federal Reserve or ECB step is 25 bps. Bond traders quote yield spreads in bps. Fund managers describe management fees in bps: an expense ratio of 0.65% is "65 basis points". Mortgage and loan margins, swap spreads, and credit-default-swap premia are all expressed the same way.
How to convert basis points
- To convert basis points to a percentage, divide by 100:
250 bps ÷ 100 = 2.5%. - To convert a percentage to basis points, multiply by 100:
0.75% × 100 = 75 bps. - To express bps as a decimal, divide by 10,000:
50 bps ÷ 10,000 = 0.005. - To find x bps of an amount, multiply the amount by the decimal:
15 bps of €2,000,000 = 2,000,000 × 0.0015 = €3,000.
Calculating the impact of a rate change
The monetary effect of a rate move on a notional amount is the change in decimal terms multiplied by the notional. If a €1,000,000 position sees its rate move from 3.50% to 4.25% — a change of 75 bps — the annualised impact is 1,000,000 × 0.0075 = €7,500. The "Rate Change Impact" panel above performs exactly this calculation for any pair of rates and any notional.
About the exchange rates in this tool
The currency converter uses official European Central Bank reference rates. These are published once per business day, around 16:00 Central European Time, and are widely used for accounting, invoicing, reporting, and general reference. They are reference rates, not live dealing rates, so they are ideal for valuation and display but are not intended for executing live FX trades. For speed and reliability, Platy4 Finance fetches these rates server-side and caches them, so the converter loads instantly and keeps working even if an upstream source is briefly unavailable.
Frequently asked questions
Is 100 basis points the same as 1%? Yes. 100 bps equals exactly one percentage point, and 10,000 bps equals 100%.
Why not just use percentages? Basis points eliminate the ambiguity between a relative percentage change and an absolute percentage-point change, which matters a great deal when small movements carry large monetary consequences.
How current are the exchange rates? They reflect the most recent ECB publication, refreshed by our servers several times a day. Outside ECB business hours you will see the latest available business-day close.
Is this tool free? Yes. The basis point calculator and currency converter are free to use. Platy4 Finance is an advisory practice; this tool is provided as a public resource and is supported in part by advertising.