Search Tips

Search for an Exact Phrase
You may search for an exact phrase by enclosing your query in quotes (e.g. "chapter 2").

Exclude a Word
To exclude a term from your search results, enter a minus sign before the word (e.g. apollo -greek -god).

Force Inclusion of all Words
Common words like "what" or "it" may sometimes be ignored by RefSeek. To force the inclusion of a term in your query, wrap it in quotes (e.g. lewis "and" clark).

Either/Or Queries
You may search for two or more queries simultaneously without forcing the inclusion of both in the results by entering OR in caps between each query (e.g. high school calculus OR geometry).


Enter a numeric query into the search field to find instant answers to math expressions or a range of unit conversions (e.g. 10 pints in liters, how many inches in a foot). An overview of supported math functions follows.

Basic Math Operators

Operator Function Example
+ addition 64 + 32
- subtraction 28 - 7
* multiplication 10 * 100
/ division 27 / 3
^ exponentiation (raise to a power of) 10 ^ 2
sin, cos, tan sine, cosine, tangent tan 45
sqrt square root sqrt(49)
log logarithm base 10 log(1024)

Unit Conversions

Category Example
Data how many bits in a byte?
Energy 50 joules in BTU
Length 5 meters in feet
Speed 50 mph in knots
Temperature 0 celsius in fahrenheit
Time 1 year in days
Volume how many pints are in a liter?
Weight 10 ounces in grams

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