Template:Inflation/testcases

This is the template test cases page for the sandbox of Template:Inflation. Purge this page to update the examples.
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Examples for all supported currency types

100 in 2000, adjusted to latest supported year

{{Inflation|AU|100|2000}}

Side by side comparison
{{Inflation}}	{{Inflation/sandbox}}
178	178

{{Inflation|AU-road|100|2000}}

Side by side comparison
{{Inflation}}	{{Inflation/sandbox}}
184	184

{{Inflation|BD|100|2000}}

Side by side comparison
{{Inflation}}	{{Inflation/sandbox}}
486	486

{{Inflation|CA|100|2000}}

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{{Inflation}}	{{Inflation/sandbox}}
172	172

{{Inflation|DE|100|2000}}

Side by side comparison
{{Inflation}}	{{Inflation/sandbox}}
70	70

{{Inflation|IR|100|1379}}

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{{Inflation}}	{{Inflation/sandbox}}
2400	2400

{{Inflation|JP|100|2000}}

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{{Inflation}}	{{Inflation/sandbox}}
111	111

{{Inflation|KRW|100|2000}}

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{{Inflation}}	{{Inflation/sandbox}}
185	185

{{Inflation|PH|100|2000}}

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{{Inflation}}	{{Inflation/sandbox}}
219	219

{{Inflation|PK|100|2000}}

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{{Inflation}}	{{Inflation/sandbox}}
509	509

{{Inflation|UK|100|2000}}

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{{Inflation}}	{{Inflation/sandbox}}
190	190

{{Inflation|UK-GDP|100|2000}}

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{{Inflation}}	{{Inflation/sandbox}}
181	181

{{Inflation|US|100|2000}}

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{{Inflation}}	{{Inflation/sandbox}}
187	187

{{Inflation|US-GDP|100|2000}}

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{{Inflation}}	{{Inflation/sandbox}}
173	173

{{Inflation|ZAR|100|2000}}

Side by side comparison
{{Inflation}}	{{Inflation/sandbox}}
319	319

100 in 2000, adjusted to 2014

{{Inflation|AU|100|2000|2014}}

Side by side comparison
{{Inflation}}	{{Inflation/sandbox}}
148	148

{{Inflation|AU-road|100|2000|2014}}

Side by side comparison
{{Inflation}}	{{Inflation/sandbox}}
173	173

{{Inflation|BD|100|2000|2014}}

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{{Inflation}}	{{Inflation/sandbox}}
253	253

{{Inflation|CA|100|2000|2014}}

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{{Inflation}}	{{Inflation/sandbox}}
131	131

{{Inflation|DE|100|2000|2014}}

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{{Inflation}}	{{Inflation/sandbox}}
64	64

{{Inflation|IR|100|1379|1393}}

Side by side comparison
{{Inflation}}	{{Inflation/sandbox}}
968	968

{{Inflation|JP|100|2000|2014}}

Side by side comparison
{{Inflation}}	{{Inflation/sandbox}}
98	98

{{Inflation|KRW|100|2000|2014}}

Side by side comparison
{{Inflation}}	{{Inflation/sandbox}}
149	149

{{Inflation|PH|100|2000|2014}}

Side by side comparison
{{Inflation}}	{{Inflation/sandbox}}
180	180

{{Inflation|PK|100|2000|2014}}

Side by side comparison
{{Inflation}}	{{Inflation/sandbox}}
329	329

{{Inflation|UK|100|2000|2014}}

Side by side comparison
{{Inflation}}	{{Inflation/sandbox}}
138	138

{{Inflation|UK-GDP|100|2000|2014}}

Side by side comparison
{{Inflation}}	{{Inflation/sandbox}}
135	135

{{Inflation|US|100|2000|2014}}

Side by side comparison
{{Inflation}}	{{Inflation/sandbox}}
137	137

{{Inflation|US-GDP|100|2000|2014}}

Side by side comparison
{{Inflation}}	{{Inflation/sandbox}}
133	133

{{Inflation|ZAR|100|2000|2014}}

Side by side comparison
{{Inflation}}	{{Inflation/sandbox}}
261	261

Changes to data set

dependencies

Test cases for

UK	TEST
A widget in 1900 was worth £90 (Approximately £9564 today)	A widget in 1900 was worth £90 (Approximately £8245 today)
A widget in 1900 was worth £90 (Approximately £2229 in 1980)	A widget in 1900 was worth £90 (Approximately £2271 in 1980)
A pre-decimal penny was worth in 1854 about the same as 40p today.	A pre-decimal penny was worth in 1854 about the same as 33p today.^[1]
This should be 1.031252968557	£1 in 2011 is worth approximately £1.03 today.

Errors

Missing parameters fail

{{Inflation}}

Error when using {{Inflation}}: |index= (parameter 1), |value= (parameter 2) and |start_year= (parameter 3) must be specified.

Index fail

{{Inflation|INVALID|b|c}}

Error when using {{Inflation}}: |index=INVALID (parameter 1) not a recognized index.

Non-numeric fail

{{Inflation|DE|b|c}}

Error when using {{Inflation}}: NaN, check parameters for non-numeric data: |value=b (parameter 2) and |start_year=c (parameter 3).

Significant digits

{{Inflation|US|1|2017|2018|r=1}}

Side by side comparison
{{Inflation}}	{{Inflation/sandbox}}
1	1

{{Inflation|US|1|2017|2018|r=2}}

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{{Inflation}}	{{Inflation/sandbox}}
1.02	1.02

{{Inflation|US|1|2017|2018|r=3}}

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{{Inflation}}	{{Inflation/sandbox}}
1.024	1.024

{{Inflation|US|0.96|2017|2018|r=1}}

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{{Inflation}}	{{Inflation/sandbox}}
1	1

{{Inflation|US|0.96|2017|2018|r=2}}

Side by side comparison
{{Inflation}}	{{Inflation/sandbox}}
0.98	0.98

{{Inflation|US|0.96|2017|2018|r=3}}

Side by side comparison
{{Inflation}}	{{Inflation/sandbox}}
0.983	0.983

Equivalence

{{Inflation|US|96|2017|2018|fmt=eq |r=0}}

Side by side comparison
{{Inflation}}	{{Inflation/sandbox}}
equivalent to $98 in 2018	equivalent to $98 in 2018

{{Inflation|US|96|2017|2018|fmt=eqm |r=0}}

Side by side comparison
{{Inflation}}	{{Inflation/sandbox}}
98	98

{{Inflation|US|96|2017|2018|cursign=£ |fmt=eq |orig=yes |r=0}}

Side by side comparison
{{Inflation}}	{{Inflation/sandbox}}
£96 (equivalent to £98 in 2018)	£96 (equivalent to £98 in 2018)

Wrapping with Template:format price

Y ${{Format price|{{Inflation|US-GDP|10000000000000|1900}}}} → $309 trillion
Y ${{Format price|{{Inflation|US-GDP|1000000|1990}}}} → $2.12 million
Y DM {{Format price|{{Inflation|DE|1000000|1957|1978}}}} → DM 2.01 million
Y £{{Format price|{{Inflation|UK-GDP|1000|1323}}}} → £765,689

sandbox:

Y ${{Format price|{{Inflation/sandbox|US-GDP|10000000000000|1900}}}} → $309 trillion
Y ${{Format price|{{Inflation/sandbox|US-GDP|1000000|1990}}}} → $2.12 million
Y DM {{Format price|{{Inflation/sandbox|DE|1000000|1957|1978}}}} → DM 2.01 million
Y £{{Format price|{{Inflation/sandbox|UK-GDP|1000|1323}}}} → £765,689

Wrapping with Template:FXConvert

¥3.3 billion (US$30.27 million)

sandbox: ¥3.3 billion (US$30.27 million)

Other test cases

Very large amount of money

{{Inflation|US|25000000000|2010}}

36910575309

References

↑ UK Consumer Price Index inflation figures from 1209–2024 based on data from "Inflation calculator". Bank of England. London. February 18, 2026. Retrieved April 1, 2026.

Trailing Zeros Bug

1971 $0.05: equivalent to $0.40 in 2025 (sandbox) vs equivalent to $0.40 in 2025 (main)
1974 $0.03: equivalent to $0.20 in 2025 (sandbox) vs equivalent to $0.20 in 2025 (main)

[inflation-UK-1] UK Consumer Price Index inflation figures from 1209–2024 based on data from "Inflation calculator". Bank of England. London. February 18, 2026. Retrieved April 1, 2026.

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