Spread provides these built-in functions, listed alphabetically.

ABS	ACCRINT	ACCRINTM
ACOS	ACOSH	ACOT
ACOTH	ADDRESS	AMORDEGRC
AMORLINC	AND	ARABIC
AREAS	ASIN	ASINH
ATAN	ATAN2	ATANH
AVEDEV	AVERAGE	AVERAGEA
AVERAGEIF	AVERAGEIFS	BAHTTEXT
BASE	BESSELI	BESSELJ
BESSELK	BESSELY	BETADIST
BETA.DIST	BETAINV	BETA.INV
BIN2DEC	BIN2HEX	BIN2OCT
BINOMDIST	BINOM.DIST	BINOM.DIST.RANGE
BINOM.INV	BITAND	BITLSHIFT
BITOR	BITRSHIFT	BITXOR
CEILING	CEILING.MATH	CEILING.PRECISE
CHAR	CHIDIST	CHIINV
CHISQ.DIST	CHISQ.DIST.RT	CHISQ.INV
CHISQ.INV.RT	CHISQ.TEST	CHITEST
CHOOSE	CLEAN	CODE
COLUMN	COLUMNS	COMBIN
COMBINA	COMPLEX	CONCAT
CONCATENATE	CONFIDENCE	CONFIDENCE.NORM
CONFIDENCE.T	CONVERT	CORREL
COS	COSH	COT
COTH	COUNT	COUNTA
COUNTBLANK	COUNTIF	COUNTIFS
COUPDAYBS	COUPDAYS	COUPDAYSNC
COUPNCD	COUPNUM	COUPPCD
COVAR	COVARIANCE.P	COVARIANCE.S
CRITBINOM	CSC	CSCH
CUMIPMT	CUMPRINC

DATE	DATEDIF	DATEVALUE
DAVERAGE	DAY	DAYS
DAYS360	DB	DCOUNT
DCOUNTA	DDB	DEC2BIN
DEC2HEX	DEC2OCT	DECIMAL
DEGREES	DELTA	DEVSQ
DGET	DISC	DMAX
DMIN	DOLLAR	DOLLARDE
DOLLARFR	DPRODUCT	DSTDEV
DSTDEVP	DSUM	DURATION
DVAR	DVARP	EDATE
EFFECT	ENCODEURL	EOMONTH
ERF	ERF.PRECISE	ERFC
ERFC.PRECISE	ERROR.TYPE	EURO
EUROCONVERT	EVEN	EXACT
EXP	EXPONDIST	EXPON.DIST

 

FACT	FACTDOUBLE	FALSE
FDIST	F.DIST	F.DIST.RT
FIND	FINDB	FINV
F.INV	F.INV.RT	FISHER
FISHERINV	FIXED	FLOOR
FLOOR.MATH	FLOOR.PRECISE	FORECAST
FORMULATEXT	FREQUENCY	FTEST
F.TEST	FV	FVSCHEDULE
GAMMA	GAMMADIST	GAMMA.DIST
GAMMAINV	GAMMA.INV	GAMMALN
GAMMALN.PRECISE	GAUSS	GCD
GEOMEAN	GESTEP	GROWTH
HARMEAN	HEX2BIN	HEX2DEC
HEX2OCT	HLOOKUP	HOUR
HYPERLINK	HYPGEOMDIST	HYPGEOM.DIST

IF	IFERROR	IFS
IFNA	IMABS	IMAGINARY
IMARGUMENT	IMCONJUGATE	IMCOS
IMDIV	IMEXP	IMLN
IMLOG2	IMLOG10	IMPOWER
IMPRODUCT	IMREAL	IMCOSH
IMCOT	IMCSC	IMCSCH
IMSEC	IMSECH	IMSIN
IMSINH	IMSQRT	IMSUB
IMSUM	IMTAN	INDEX
INDIRECT	INT	INTERCEPT
INTRATE	IPMT	IRR
ISBLANK	ISERR	ISERROR
ISEVEN	ISFORMULA	ISLOGICAL
ISNA	ISNONTEXT	ISNUMBER
ISO.CEILING	ISODD	ISOWEEKNUM
ISPMT	ISREF	ISTEXT
KURT	LARGE	LCM
LEFT	LEFTB	LEN
LENB	LINEST	LN
LOG	LOG10	LOGEST
LOGINV	LOGNORMDIST	LOGNORM.DIST
LOGNORM.INV	LOOKUP	LOWER

MATCH	MAX	MAXA
MAXIFS	MDETERM	MDURATION
MEDIAN	MID	MIDB
MIN	MINA	MINIFS
MINUTE	MINVERSE	MIRR
MMULT	MOD	MODE
MODE.MULT	MODE.SNGL	MONTH
MROUND	MULTINOMIAL	NEGBINOMDIST
NEGBINOM.DIST	N	NA
NETWORKDAYS	NETWORKDAYS.INTL	NOMINAL
NORMDIST	NORM.DIST	NORMINV
NORM.INV	NORMSDIST	NORM.S.DIST
NORMSINV	NORM.S.INV	NOT
NOW	NPER	NPV
OCT2BIN	OCT2DEC	OCT2HEX
ODD	ODDFPRICE	ODDFYIELD
ODDLPRICE	ODDLYIELD	OFFSET
OR	OFFSET

PDURATION	PEARSON	PERCENTILE
PERCENTILE.EXC	PERCENTILE.INC	PERCENTRANK
PERCENTRANK.EXC	PERCENTRANK.INC	PERMUT
PERMUTATIONA	PHI	PI
PMT	POISSON	POISSON.DIST
POWER	PPMT	PRICE
PRICEDISC	PRICEMAT	PROB
PRODUCT	PROPER	PV
QUARTILE	QUARTILE.EXC	QUARTILE.INC
QUOTIENT	RADIANS	RAND
RANDBETWEEN	RANK	RANK.AVG
RANK.EQ	RATE	RECEIVED
REFRESH	REPLACE	REPLACEB
REPT	RIGHT	RIGHTB
ROMAN	ROUND	ROUNDDOWN
ROUNDUP	ROW	ROWS
RRI	RSQ

SEARCH	SEARCHB	SEC
SECH	SECOND	SERIESSUM
SIGN	SIN	SINH
SKEW	SKEW.P	SLN
SLOPE	SMALL	SQRT
SQRTPI	STANDARDIZE	STDEV
STDEVA	STDEVP	STDEV.P
STDEVPA	STDEV.S	STEYX
SUBSTITUTE	SUBTOTAL	SUM
SUMIF	SUMIFS	SUMPRODUCT
SUMSQ	SUMX2MY2	SUMX2PY2
SUMXMY2	SYD	SWITCH
T	TAN	TANH
TBILLEQ	TBILLPRICE	TBILLYIELD
TDIST	T.DIST	T.DIST.2T
T.DIST.RT	TEXT	TEXTJOIN
TIME	TIMEVALUE	TINV
T.INV	T.INV.2T	TODAY
TRANSPOSE	TREND	TRIM
TRIMMEAN	TRUE	TRUNC
TTEST	T.TEST	TYPE

UPPER	UNICHAR	UNICODE
VALUE	VAR	VARA
VARP	VAR.P	VARPA
VAR.S	VDB	VLOOKUP
WEEKDAY	WEEKNUM	WEIBULL
WEIBULL.DIST	WORKDAY	WORKDAY.INTL
XIRR	XNPV	XOR
YEAR	YEARFRAC	YIELD
YIELDDISC	YIELDMAT	ZTEST
Z.TEST