Convert USD to LKR at the mid-market exchange rate. Access real-time rates via our /api/rate endpoint (free API key required) or the developer docs.
Exchange Rate Trend
USD → LKR
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USD to LKR Conversion Table
Convert USD to LKR
USD
LKR
$1
Rs331.17
$5
Rs1,655.85
$10
Rs3,311.70
$25
Rs8,279.25
$50
Rs16,558.50
$100
Rs33,117.00
$500
Rs165,585.00
$1,000
Rs331,170.00
$5,000
Rs1,655,850.00
$10,000
Rs3,311,700.00
Convert LKR to USD
LKR
USD
Rs1
$0.003
Rs5
$0.0151
Rs10
$0.0302
Rs25
$0.0755
Rs50
$0.151
Rs100
$0.302
Rs500
$1.5098
Rs1,000
$3.0196
Rs5,000
$15.098
Rs10,000
$30.196
About the US Dollar (USD)
The United States Dollar (USD) is the world's primary reserve currency and the most traded currency globally. It is issued by the Federal Reserve and is used as the benchmark for commodities like oil and gold.
Key Factors That Influence USD
Federal Reserve interest rate decisions
US employment data and GDP growth
Inflation rates (CPI)
Global risk sentiment and safe-haven demand
Trade balance and current account
About the Sri Lankan Rupee (LKR)
The Sri Lankan Rupee (LKR) is the official currency of Sri Lanka, managed by the Central Bank of Sri Lanka. The currency has experienced significant volatility in recent years due to economic challenges.
Key Factors That Influence LKR
Central Bank foreign reserves
Tourism revenue
Remittances from overseas workers
Tea and textile exports
IMF program compliance
Understanding the USD/LKR Exchange Rate
The USD/LKR exchange rate tells you how many Sri Lankan rupees you get for 1 US Dollar.
This is the mid-market rate — the real exchange rate without any markup. It's the same rate used by Google Finance.
AllRatesToday provides this rate via a free REST API, updated every 60 seconds from institutional foreign exchange market data.
Integrate live USD/LKR rates into your app with our official SDKs for JavaScript, Python, PHP, and React.
The exchange rate between USD and LKR fluctuates based on supply and demand in the foreign exchange market.
Economic data releases, central bank announcements, and geopolitical events can all cause significant movements in the rate.
Currency converter API for USD to LKR
This converter is a thin layer over two APIs. Both return JSON, both take one
HTTP call, and both have a free tier — no credit card.
Mid-market exchange rate API
The live interbank midpoint — the number shown above. It moves continuously
and is refreshed every 60 seconds across 163 currencies.
Use it for pricing, checkout, display and anything a customer sees.
The rate a named institution actually published for a given date, from
121 central banks and 3 tax
authorities. Unlike a mid-market rate it never changes after publication,
which is what tax filings, customs valuations and audits require.
Any past date — /central-bank/{bank}/2026-06-30. If the bank did not publish that day you get the most recent prior date, flagged.
Every bank at once — /api/v1/central-banks/rates returns all sources for one pair, so you can compare what each institution published.
Nothing is guessed — pairs a bank does not print are cross-computed from that bank's own table and returned with "derived": true and the method used. Banks are never mixed.
An MCP server — @allratestoday/mcp-server — lets Claude, Cursor and other MCP clients pull these rates directly, no glue code.
Free tier
300 requests, no credit card, no trial expiry. Paid plans start at €4.99/month for 5,000 requests a month.
Which one do you need? If a regulator, tax authority or auditor
names the source, use the official rate — the two can differ by several percent
on the same day. For everything a customer sees, use the mid-market rate.
On weekends and holidays the official endpoints return the most recent published
date, which is the figure compliance rules expect you to apply.
Official USD and LKR Central Bank Rates
The rate on this page is the live mid-market rate. For tax filings, customs valuations, audits, and
compliant invoicing you often need the official reference rate published by the central bank instead.
AllRatesToday also serves published central-bank rates as JSON, with history and a free latest-rates tier.
Exchange rates are determined by supply and demand in the global foreign exchange (forex) market,
the largest financial market in the world with over $6 trillion traded daily.
Floating vs Fixed Rates: Most major currencies like USD and LKR have floating exchange rates,
meaning their value is determined by market forces. Some currencies are pegged to another currency (usually USD) at a fixed rate.
Bid and Ask Prices: In forex markets, currencies are quoted with a bid price (what buyers pay) and ask price (what sellers receive).
The mid-market rate shown on this page is the midpoint between these two prices.
Rate Fluctuations: The USD/LKR rate can change every second during trading hours.
Major economic announcements, interest rate decisions, and geopolitical events can cause significant moves in either direction.
Frequently Asked Questions About USD/LKR
How do I convert USD to LKR?
To convert USD to LKR: (1) Use the calculator above to see the live mid-market rate.
(2) For programmatic access, call our API: GET /api/v1/rates?source=USD&target=LKR.
Current rate: 1 USD = 331.1700 LKR.
Get your free API key at allratestoday.com/register.
What is 1 USD in LKR today?
1 USD equals 331.1700 LKR as of today.
This is the mid-market exchange rate, which is the real rate without any bank markup.
Rates fluctuate constantly based on market conditions, so check back regularly for updates.
Is the USD going up or down against LKR today?
The USD/LKR exchange rate fluctuates throughout the day based on market conditions.
Today's rate is 1 USD = 331.1700 LKR.
Check our historical chart above to see the trend over the past day, week, month, or year
to understand whether USD is strengthening or weakening against LKR.
What is the best time to buy LKR with USD?
The best time to exchange USD to LKR depends on market conditions.
Generally, rates tend to be more favorable during overlapping trading hours between major financial centers
(London, New York, Tokyo). Avoid exchanging during weekends or bank holidays when spreads may be wider.
Use our historical chart to identify trends and consider setting up rate alerts.
Why is USD falling or rising against LKR?
Exchange rates between USD and LKR are influenced by: interest rate differentials between
central banks, inflation rates, GDP and economic growth data, trade balances, political stability,
and global market sentiment. Major announcements from the Federal Reserve, ECB, or other central banks
can cause significant short-term movements in the USD/LKR rate.
How can I get USD/LKR rates in my app?
Use the AllRatesToday API: (1) Register for a free API key at allratestoday.com/register.
(2) Call GET /api/v1/rates?source=USD&target=LKR with your Bearer token.
(3) Rates update every 60 seconds from institutional foreign exchange market data.
(4) Install our official SDK for JavaScript (npm), Python (PyPI), or PHP (Packagist) for even faster integration.
What is the mid-market rate for USD/LKR?
The mid-market rate (also called the interbank rate) is the midpoint between buy and sell prices
in global currency markets. The current mid-market rate is 1 USD = 331.1700 LKR.
This is the "real" exchange rate without any bank markup.
AllRatesToday provides this rate via a free API, sourced from institutional foreign exchange market data.
Other USD conversions
Building USD/LKR into software?
These rates come from the AllRatesToday API. If you need them in an
application rather than on a page, these are the places to start:
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