Currency Weight Calculator

Free Currency Weight Calculator that converts each currency holding to a base currency and shows the percentage weight of every position in your portfolio.

860.7K uses Updated · 2026-05-13 Runs locally · zero upload
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How to Use Currency Weight Calculator

The Currency Weight Calculator breaks a multi-currency portfolio into clean percentage weights so you can spot concentration and FX risk.

  1. Pick a base currency — Use the currency selector to choose the unit you compare against.
  2. Add a row per currency — Label, amount and FX rate to base.
  3. Add or remove rows — As many holdings as needed; the Currency Weight Calculator updates instantly.
  4. Read the weights — The percentage column tells you how exposed you are to each currency.

Formula & Theory - Currency Weight Calculator

The Currency Weight Calculator uses a basic portfolio share formula:

Base value of holding = Amount × FX rate to base
Portfolio total = Sum of base values
Weight = Base value ÷ Portfolio total
SymbolMeaning
AmountHolding in the original currency
FX rateMultiplier to convert to base currency
Base valueHolding expressed in base currency
WeightShare of total portfolio

Notes

  • The Currency Weight Calculator assumes the FX rate you enter is the right direction (foreign → base). For USD → EUR, use a rate <1; for EUR → USD, use a rate >1.
  • For a precise risk view, consider asset class within each currency separately (cash, bonds, equities).

Use Cases for Currency Weight Calculator

The Currency Weight Calculator is helpful for:

  • Multi-currency investors — Track FX exposure alongside asset allocation.
  • Expats and travelers — Manage multiple bank accounts in different currencies.
  • Treasurers — Understand company-wide currency mix at a glance.
  • Crypto/forex traders — Compare net long/short exposure in base units.

By turning balances into clear weights, the Currency Weight Calculator makes FX exposure obvious and easy to manage.

Frequently asked questions about Currency Weight Calculator

What does the Currency Weight Calculator measure?

It measures the share of each currency in your portfolio after converting every holding to one base currency using the FX rate you provide.

Where do I get FX rates?

Use a current spot rate from your bank or a market data provider. The Currency Weight Calculator does not pull live rates — that keeps it private and fast.

Why does currency weight matter?

Heavy concentration in one currency exposes you to FX risk. The Currency Weight Calculator helps you see the imbalance and decide whether to rebalance.

Is my data stored?

No. All calculations happen in your browser; nothing is sent to a server.