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Macroeconomics

Terms of Trade Index Calculator

Compare an export price index with an import price index.

Runs locally

Inputs and results stay in this browser. Currency symbols are illustrative; use any consistent currency.

Terms of trade index105.36
Terms-of-trade change from base5.36%
Export-import price index gap6

Understand Terms of Trade Index

One idea, three depths

Choose how deeply to explain Terms of Trade Index

Terms of Trade Index: Compare an export price index with an import price index.

Age 5Explain it to a 5-year-oldStart with a picture

Imagine using Terms of Trade Index to answer this question: compare an export price index with an import price index? Enter Export price index, Import price index, Base index; the calculator shows Terms of trade index. Try changing one number and watch what happens to Terms of trade index. The answer tells you Terms of trade index.

Age 15Explain it to a 15-year-oldConnect it to the formula

An increase means exports purchase more imports at the indexed prices, though quantities and income distribution also matter. The rule is Terms of trade index = export price index ÷ import price index × 100. Its input values are Export price index, Import price index, Base index, and the main result is Terms of trade index. Try changing one number and watch what happens to Terms of trade index.

CollegeExplain it at college levelState the model precisely

This calculator evaluates a macroeconomics relationship while holding unmodelled conditions constant. The implemented relation is Terms of trade index = export price index ÷ import price index × 100, evaluated from Export price index, Import price index, Base index to produce Terms of trade index. An increase means exports purchase more imports at the indexed prices, though quantities and income distribution also matter. The result depends on comparable definitions, units, populations and time periods. It estimates a relationship; it does not establish causation or replace current primary data.

The economic question

Compare an export price index with an import price index.

Why this relationship is useful

An increase means exports purchase more imports at the indexed prices, though quantities and income distribution also matter.

Inputs that must be comparable

  • Export price index.
  • Import price index.
  • Base index.

Use one market, firm, population and time period throughout; mixing definitions can make a correctly calculated number economically meaningless.

The model

Terms of trade index = export price index ÷ import price index × 100

From inputs to output

The calculator combines Export price index, Import price index, Base index and reportsTerms of trade index together with Terms-of-trade change from base, Export-import price index gap. Change one assumption at a time to identify what actually drives the estimate.

How to read Terms of trade index

Read the sign, magnitude, unit and period together. The result quantifies the relationship in “compare an export price index with an import price index”; it does not by itself prove that one input caused another.

Where interpretation can fail

Do not use the result when the input definitions, units or formula assumptions do not match the real situation. This is an educational model, not financial, investment, tax or policy advice; verify material decisions against primary data and professional guidance.

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Supporting sourcesAcademic referencesPrimary standards, textbooks and complete citations

Standards, reading and academic references

Use the calculator as the worked interaction, then consult the primary standards and academic textbooks listed below. MW SysArc links to the original sources; the explanation on this page is original and does not reproduce them.

Principles of Economics 3e

Read the free OpenStax economics textbook
Cite this book
APA 7
Greenlaw, S. A., Shapiro, D., & MacDonald, D. (2022). Principles of economics 3e. OpenStax. https://openstax.org/books/principles-economics-3e/pages/1-introduction
MLA 9
Greenlaw, Steven A., et al. Principles of Economics 3e. OpenStax, 2022, https://openstax.org/books/principles-economics-3e/pages/1-introduction.
Chicago author-date
Greenlaw, Steven A., David Shapiro, and Daniel MacDonald. 2022. Principles of Economics 3e. Houston, TX: OpenStax. https://openstax.org/books/principles-economics-3e/pages/1-introduction.

OpenStax entries are free to read online. Follow the licence shown on each linked source before redistributing or adapting its content.

Reuse the page responsiblyCite this pageAPA, MLA, Chicago, Harvard, BibTeX and RIS

These formats cite this calculator page itself. They are separate from the academic references above, which support the mathematical method and terminology.

Organizational author: MW SysArc. Published:. Canonical page:https://economics.mwsysarc.com/macro/terms-of-trade-index-analysis.

APA 7

MW SysArc. (2026, July 21). Terms of Trade Index Calculator. MW SysArc Tools. https://economics.mwsysarc.com/macro/terms-of-trade-index-analysis

MLA 9

MW SysArc. “Terms of Trade Index Calculator.” MW SysArc Tools, 21 July 2026, https://economics.mwsysarc.com/macro/terms-of-trade-index-analysis. Accessed 30 Aug. 2026.

Chicago 17

MW SysArc. “Terms of Trade Index Calculator.” MW SysArc Tools. Published July 21, 2026. Accessed August 30, 2026. https://economics.mwsysarc.com/macro/terms-of-trade-index-analysis.

Harvard

MW SysArc (2026) ‘Terms of Trade Index Calculator’, MW SysArc Tools. Published 21 July 2026. Available at: https://economics.mwsysarc.com/macro/terms-of-trade-index-analysis (Accessed: 30 August 2026).

BibTeX and RIS records

BibTeX

@misc{mwsysarc_terms_of_trade_index_2026,
  author = {{MW SysArc}},
  title = {Terms of Trade Index Calculator},
  howpublished = {MW SysArc Tools},
  year = {2026},
  url = {https://economics.mwsysarc.com/macro/terms-of-trade-index-analysis},
  note = {Published July 21, 2026; accessed August 30, 2026}
}

RIS

TY  - ELEC
AU  - MW SysArc
TI  - Terms of Trade Index Calculator
T2  - MW SysArc Tools
PY  - 2026
DA  - 2026-07-21
Y2  - 2026-08-30
UR  - https://economics.mwsysarc.com/macro/terms-of-trade-index-analysis
N1  - Published July 21, 2026
ER  -

Clear answers

Frequently asked questions

What does the Terms of Trade Index do?

Compare an export price index with an import price index.

How does the Terms of Trade Index work?

The calculator applies this formula: Terms of trade index = export price index ÷ import price index × 100. An increase means exports purchase more imports at the indexed prices, though quantities and income distribution also matter.

What can I learn from the Terms of Trade Index?

It helps you explore the relationship described by this tool: Compare an export price index with an import price index. Change one input at a time to observe how it affects the result.

Does MW SysArc receive or store what I enter?

No. The calculation runs locally in your browser. MW SysArc does not receive or store your calculation inputs.

How should I use the result?

Use the result as an estimate or educational aid. Check important financial, business or policy decisions with qualified sources and current data.

Last reviewed . Calculations tested .

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