ForHosting KIT
Everything you need.
One Kit.
Hundreds of ready-made tasks — PDF, images, audio, OCR, text AI, scraping, data and more — behind a single REST API. Send a job, get a finished result by webhook. No servers, no per-model tokens, a price you can read.
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The full catalog
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⚙️ Developer UtilitiesFree
Paired t-test calculator
t statistic, df and p-value free
P
POST /stat/t-test-paired$0.002⚙️ Developer UtilitiesFree
Absolute risk reduction calculator
compare event rates
K
POST /stat/absolute-risk-reduction$0.002⚙️ Developer UtilitiesFree
ANOVA from group summaries
one-way F and p-value from means, SDs, n
S
POST /stat/anova-summary$0.002⚙️ Developer UtilitiesFree
Log odds ratio calculator with standard error
F
POST /stat/log-odds-ratio$0.002⚙️ Developer UtilitiesFree
Omega squared calculator
ANOVA effect size from sums of squares
B
POST /stat/omega-squared$0.002⚙️ Developer UtilitiesFree
Relative risk calculator
RR from exposed and unexposed counts
A
POST /stat/relative-risk$0.002⚙️ Developer UtilitiesFree
Cohen's h calculator
effect size for two proportions free
P
POST /stat/cohens-h$0.002⚙️ Developer UtilitiesFree
Exponential moving average calculator
EMA with smoothing factor
S
POST /stat/exponential-moving-average$0.002⚙️ Developer UtilitiesFree
Fisher ideal price index
geometric mean of Laspeyres and Paasche
A
POST /stat/fisher-price-index$0.002⚙️ Developer UtilitiesFree
Gini coefficient calculator
measure inequality from 0 to 1
F
POST /stat/gini-coefficient$0.002⚙️ Developer UtilitiesFree
Rényi entropy calculator
H_α from probabilities and order α
S
POST /stat/renyi-entropy$0.002⚙️ Developer UtilitiesFree
Simpson Dominance Index Calculator for Species Counts
B
POST /stat/simpson-dominance-index$0.002⚙️ Developer UtilitiesFree
Theil index calculator
measure income inequality with entropy
K
POST /stat/theil-index$0.002⚙️ Developer UtilitiesFree
Arcsine in radians calculator
principal asin angle
B
POST /trig/arcsin-radians$0.002⚙️ Developer UtilitiesFree
Cosine of angle in degrees calculator
find cos from any angle
F
POST /trig/cos-degrees$0.002⚙️ Developer UtilitiesFree
Adjacent Side Calculator from Angle and Opposite Side
K
POST /trig/adjacent-side-from-angle$0.002⚙️ Developer UtilitiesFree
Arccotangent in degrees calculator
principal arccot angle
B
POST /trig/arccot-degrees$0.002⚙️ Developer UtilitiesFree
Arcsecant in degrees calculator
arcsec(x) principal angle free
A
POST /trig/arcsec-degrees$0.002⚙️ Developer UtilitiesFree
Right triangle missing leg from area
other leg, hypotenuse, angles
S
POST /trig/right-triangle-area-leg$0.002⚙️ Developer UtilitiesFree
Solve a right triangle from two legs
sides, angles and area
F
POST /trig/right-triangle-two-legs$0.002⚙️ Developer UtilitiesFree
Secant of an Angle in Degrees Calculator
K
POST /trig/sec-degrees$0.002⚙️ Developer UtilitiesFree
Horizontal distance from elevation angle
height ÷ tan(θ), free
A
POST /trig/distance-from-elevation$0.002⚙️ Developer UtilitiesFree
Law of sines missing side calculator
unknown side from angle-side pair
S
POST /trig/law-of-sines-side$0.002⚙️ Developer UtilitiesFree
Solve an AAS triangle
angles, sides, and area calculator
K
POST /trig/solve-aas-triangle$0.002⚙️ Developer UtilitiesFree
Sun elevation angle from shadow calculator
B
POST /trig/sun-angle-from-shadow$0.002⚙️ Developer UtilitiesFree
Tangent of angle in radians
tan(θ) = sin(θ)/cos(θ) free
P
POST /trig/tan-radians$0.002⚙️ Developer UtilitiesFree
Power reduction sine squared calculator
sin²(θ)=(1−cos(2θ))/2
S
POST /trig/power-reduction-sin$0.002⚙️ Developer UtilitiesFree
Product-to-sum cosine calculator
convert cos A cos B
K
POST /trig/product-to-sum-coscos$0.002⚙️ Developer UtilitiesFree
Pythagorean identity sin cos calculator
find the missing value
B
POST /trig/pythagorean-identity-sincos$0.002⚙️ Developer UtilitiesFree
Sine of difference of angles calculator
use the sin(A − B) identity
B
POST /trig/sin-difference$0.002⚙️ Developer UtilitiesFree
Sine half-angle calculator
sin(θ/2) with quadrant sign
A
POST /trig/sin-half-angle$0.002⚙️ Developer UtilitiesFree
Tangent of difference of angles calculator
tan(A−B) free
P
POST /trig/tan-difference$0.002⚙️ Developer UtilitiesFree
Tangent double-angle calculator
find tan(2θ) from tan(θ)
F
POST /trig/tan-double-angle$0.002⚙️ Developer UtilitiesFree
Triangle area from vertex coordinates calculator
shoelace formula
F
POST /trig/area-coordinates$0.002⚙️ Developer UtilitiesFree
General solution of sine equation
θ = nπ ± form in deg & rad
A
POST /trig/general-solution-sine$0.002⚙️ Developer UtilitiesFree
Gradians to radians conversion calculator
gon to rad
K
POST /trig/gradian-to-rad$0.002⚙️ Developer UtilitiesFree
Quadrant of an angle calculator
standard position, free
S
POST /trig/quadrant-of-angle$0.002⚙️ Developer UtilitiesFree
Solve sine equation calculator
all solutions in degrees
K
POST /trig/solve-sin-equation$0.002⚙️ Developer UtilitiesFree
Cylindrical to Cartesian coordinates calculator
ρ, φ, z to x, y, z
S
POST /trig/cylindrical-to-cartesian$0.002⚙️ Developer UtilitiesFree
De Moivre Theorem Power Calculator for Complex Numbers
B
POST /trig/demoivre-power$0.002⚙️ Developer UtilitiesFree
Degrees minutes seconds arithmetic calculator
add or subtract DMS angles
F
POST /trig/dms-arithmetic$0.002⚙️ Developer UtilitiesFree
Complex number rectangular to polar form
modulus and argument in degrees
A
POST /trig/rectangular-to-polar-complex$0.002⚙️ Developer UtilitiesFree
Angular frequency from period calculator
find ω = 2π/T
F
POST /trig/angular-frequency$0.002⚙️ Developer UtilitiesFree
Triangle area Heron's formula calculator
three sides to area
P
POST /trig/area-heron$0.002⚙️ Developer UtilitiesFree
Quotient of complex numbers in polar form calculator
K
POST /trig/complex-quotient-polar$0.002⚙️ Developer UtilitiesFree
Hyperbolic cotangent calculator
compute coth(x)
B
POST /trig/coth$0.002⚙️ Developer UtilitiesFree
Phase shift of a sinusoidal function
compute −C/B and shift direction
S
POST /trig/sinusoid-phase-shift$0.002⚙️ Developer UtilitiesFree
Hyperbolic tangent calculator
tanh(x) = sinh(x)/cosh(x)
A
POST /trig/tanh$0.002⚙️ Developer UtilitiesFree
Gravity components on an inclined plane calculator
B
POST /trig/incline-component-gravity$0.002⚙️ Developer UtilitiesFree
Resultant of two vectors calculator
magnitude and direction
S
POST /trig/resultant-two-vectors$0.002⚙️ Developer UtilitiesFree
Hyperbolic sine double-angle calculator
compute sinh(2x)
F
POST /trig/sinh-double-angle$0.002⚙️ Developer UtilitiesFree
Spherical Law of Cosines for Sides Calculator
K
POST /trig/spherical-law-of-cosines-side$0.002⚙️ Developer UtilitiesFree
Spherical triangle area from excess
Girard A = R²E calculator
A
POST /trig/spherical-triangle-area$0.002⚙️ Developer UtilitiesFree
Destination point from bearing and distance calculator
F
POST /trig/destination-point-bearing$0.002⚙️ Developer UtilitiesFree
Linear speed from angular speed calculator
v = rω
K
POST /trig/linear-speed-angular$0.002⚙️ Developer UtilitiesFree
Sign of trig function in quadrant calculator
ASTC rule
S
POST /trig/sign-of-trig-function$0.002⚙️ Developer UtilitiesFree
Tangent from sine and cosine calculator
divide sin by cos
B
POST /trig/tan-from-sin-cos$0.002⚙️ Developer UtilitiesFree
Triangle perimeter calculator
sum of three sides with inequality check
A
POST /trig/triangle-perimeter-from-sides$0.002⚙️ Developer UtilitiesFree
Distance by triangulation calculator
baseline and base angles
P
POST /trig/triangulation-distance$0.002⚙️ Developer UtilitiesFree
Triangle altitude from area and base calculator
find the height
F
POST /trig/altitude-from-area$0.002No capabilities match your search.
How it works
1
Get your key
Create an account with your email and add balance when you need it. No subscription, no sales call.
2
Call the endpoint
One authenticated POST. The API returns a task_id immediately — copy-paste snippets in five languages on every page.
3
Collect the result
Receive a signed webhook the moment it's ready, or fetch a signed link. A failed task is never charged.
Pay only for what you use
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Free tools
$0.00
On-device utilities — hash, QR, JSON, Text→PDF and more — run in your browser. No account, no limits.
Pay-as-you-go
Per task
$0.002+
The full API — 7500+ capabilities — billed only for what you run, from $0.002 per call. No monthly fee.
Balance
$10.00+
Top up your balance and spend it across web, API and the app. It never expires.